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| acronym definition | |
| 0D Zero-dimensional | |
| 1AM Air mechanic 1st class | |
| 1D One-dimensional | |
| 2AM Air mechanic 2nd class | |
| 2D Two-dimensional | |
| 2G Second-generation mobile (cellular, wireless) telephone system | |
| 2LA Two letter acronym | |
| 2Lt 2nd lieutenant | |
| 3AM Air mechanic 3rd class | |
| 3D Three-dimensional | |
| 3G Third-generation mobile telephone system | |
| 3i Investors In industry (venture capitalists) | |
| 3M Minnesota Mining and Manufacturing Company | |
| 4D Four-dimensional (usually three spatial plus one temporal dimension, sometimes four spatial ones) | |
| 4G Fourth-generation mobile telephone system | |
| 4GL Fourth-generation programming language | |
| 4WD Four-wheel drive | |
| 5D Five-dimensional | |
| 6D Six-dimensional | |
| 7D Seven-dimensional | |
| 8D Eight-dimensional | |
| 9D Nine-dimensional | |
| a Atto- | |
| A Ampere | |
| A1C Airman First Class | |
| A4 many, including a European standard office paper size; see entry | |
| A10 Atlantic 10 Conference | |
| aa Afar language (ISO 639-1 code) | |
| aA Attoampere | |
| AA achieved availability,Alcoholics Anonymous, Armed Forces Americas (postal symbol),Aruba (FIPS 10-4 territory code), assembly area,Automobile Association,avenue of approach | |
| AAA administration, authorization, and authentication,American Automobile Association ("Triple-A"),anti-aircraft artillery,Amateur Athletic Association (of England),Asistencia Asesoría y Administración (Spanish, "Assistance, Consulting, and Administration"— original name of Mexican professional wrestling promotion Lucha Libre AAA Worldwide) | |
| AAAI Association for the Advancement of Artificial Intelligence, formerly American Association for Artificial Intelligence | |
| AAAS American Association for the Advancement of Science | |
| AAAV Advanced Amphibious Assault Vehicle | |
| AABN African Aurora Business Network | |
| AABP American Association of Bovine Practitioners | |
| AAC American Athletic Conference,Army Air Corps (British Army),AACL Albanian American Civic League,AACCS American Association of Christian Colleges and Seminaries | |
| AAD analogue-analogue-digital (CD quality),Australian Antarctic Division | |
| AADD Adult attention deficit disorder | |
| AADT annual average daily traffic | |
| AADAC Alberta Alcohol and Drug Abuse Commission | |
| AADC area air defense commander, amino acid decarboxylase, aromatic L-amino acid decarboxylase, Australian Antarctic Data Centre | |
| AAFC U.S. Army Air Corps Ferrying Command (1941-1942),All-America Football Conference (1946-1949) | |
| AAFES Army and Air Force Exchange Service | |
| AAI applied artificial intelligence | |
| AAIS advanced airborne interceptor simulator | |
| AAM air-to-air missile | |
| AAMOF as a matter of fact | |
| AAN American Academy of Nursing | |
| AANEAS Anglo-Australian Near-Earth Asteroid Survey | |
| AAODL Atmospheric Aerosols and Optics Data Library | |
| AAP advanced acquisition plan,Allied administrative publication,American Academy of Pediatrics | |
| AAPC Accounting and Auditing Policy Committee | |
| aar Afar language (ISO 639-2 code) | |
| AAR after-action review,Association of American Railroads | |
| AARP (i/s) American Association of Retired Persons (now officially known only by the initials) | |
| AAS Advanced Automation System,American Astronomical Society ("double-A-S") | |
| AASPEM advanced air-to-air system performance evaluation model | |
| AAT Australian Antarctic Territory | |
| AAV Amphibious Assault Vehicle | |
| AAWC anti-air warfare commander | |
| ab Abkhaz language (ISO 639-1 code) | |
| AB Able Seaman (both the rank and the occupation), Alberta (postal symbol) | |
| ABA Adriatic Basketball Association,American Bar Association,American Basketball Association,American Beverage Association,American Bicycle Association,American Birding Association,Australian Broadcasting Authority | |
| ABB ASEA Brown Boveri (Swiss-Swedish multinational company) | |
| ABBA Agnetha, Benny, Björn, Anni-Frid (Swedish pop group) | |
| ABC abstinence, be faithful, condoms,Active Body Control,airway, breathing, circulation (see CPR),Alcoholic Beverage Commission,alien big cat,always be careful,American Bird Conservancy,American-born Chinese,American Broadcasting Company,anti-lock brake controller,Associated British Corporation,Atanasoff-Berry Computer,Atlantic Baptist College,atomic, biological, chemical (see NBC),Australian Broadcasting Corporation,already been chewed gum | |
| ABCA American, British and Canadian Armies (originally),Army Bureau of Current Affairs | |
| ABCS (U.S.) Army Battle Command System | |
| ABET Accreditation Board for Engineering and Technology | |
| ABFIST Advanced Bradley Full Crew Interactive Skills Trainer | |
| ABGI Addington-Barker Group International | |
| ABIN Agência Brasileira de Inteligência (Brazilian Intelligence Agency) | |
| abk Abkhaz language (ISO 639-2 code) | |
| ABL American Basketball League | |
| ABLE AirBorne Law Enforcement (police air support unit) | |
| ABM anti-ballistic missile-Asynchronous Balanced Mode-automated banking machine | |
| ABMC American Battle Monuments Commission | |
| ABN Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes) | |
| ABPI Association of the British Pharmaceutical Industry | |
| ABRSM Associated Board of the Royal Schools of Music | |
| ABS acrylonitrile butadiene styrene,anti-lock braking system | |
| ABSA Amalgamated Banks of South Africa ("ab-sa") | |
| ABSTRIPS abstraction-based STRIPS | |
| ABV Alcohol by volume | |
| ABW Aruba (ISO 3166 trigram) | |
| aC Attocoulomb | |
| Ac Actinium | |
| AC Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin, "before Christ"; see BC),ante cibum (Latin, "before meals"), Antigua and Barbuda (FIPS 10-4 country code), Associazione Calcio (Italian, "football (soccer) club"),A/C-Air Conditioned/Conditioning-Aircraft | |
| AC1 Aircraftman 1st Class | |
| AC2 Aircraftman 2nd Class | |
| ACA Affordable Care Act, shorthand for the Patient Protection and Affordable Care Act, commonly called "Obamacare", Airspace Control Authority,Airspace Co-ordination Area,A Current Affair | |
| ACARS Aircraft Communications Addressing and Reporting System | |
| ACAS Aboriginal Children's Advancement Society,Advisory, Conciliation and Arbitration Service | |
| ACB Asociación de Clubes de Baloncesto (Spanish for "Association of Basketball Clubs") | |
| ACC U.S. Air Combat Command,Air Component Commander,Alpine Club of Canada,Altocumulus castellanus,Area Control Center,Atlantic Coast Conference,Automatic climate control | |
| ACCA The Association of Chartered Certified Accountants,Automatic Cloud Cover Assessment | |
| ACCAC Awdurdod Cymwysterau, Cwricwlwm ac Asesu Cymru (Qualifications, Curriculum and Assessment Authority for Wales) | |
| ACCD American Coalition of Citizens with Disabilities | |
| ACCS Air Communications and Control Squadron | |
| ACDA Arms Control & Disarmament Agency | |
| ACDC Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre-Air Commodore | |
| ACDT Apple Certified Desktop Technician, Australian Central Daylight Time | |
| ACE Air Combat Emulator (computer game),Allied Command Europe,Angiotensin-converting enzyme,Armored Combat Earthmover,Automatic Computing Engine | |
| ACES Aerolíneas Centrales de Colombia (Spanish, "Central Colombian Airlines"),Auxiliary Campus Enterprises and Services of Alfred State College | |
| ACF Administration for Children and Families,American Car and Foundry,American Culinary Federation | |
| ACHT Average Call Hold Time | |
| ACID Atomicity, Consistency, Isolation, and Durability (in databases) | |
| ACINT Acoustic Intelligence | |
| ACK Acknowledge (telecommunications; cf. NAK) | |
| ACL Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament,Atlantic Coast Line Railroad | |
| ACLJ American Center for Law and Justice | |
| ACLOS Automatic CLOS (missile control system) | |
| ACLS American Council of Learned Societies | |
| ACLU American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above) | |
| ACM many, including Association for Computing Machinery; see entry | |
| ACMC (U.S.) Assistant Commandant of the Marine Corps | |
| ACN Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company) | |
| ACNA Anglican Church in North America | |
| ACO Airspace Control Order | |
| ACOBA Advisory Committee on Business Appointments | |
| ACOG American College of Obstetricians and Gynecologists | |
| ACOM (U.S.) Atlantic Command | |
| ACORN Association of Community Organizations for Reform Now | |
| ACP African, Caribbean and Pacific Group of States,Air Control Point | |
| ACR Advanced Concepts and Requirements | |
| ACRI African Crisis Initiative | |
| ACRT Advanced Concepts Research Tool simulator | |
| ACS Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society | |
| ACSC Army Command and Staff College (various nations) | |
| ACST Australian Central Standard Time | |
| ACST American Cooperative School of Tunis | |
| ACT Adaptive Control of Thought (cognitive model),American College Test (ing Program),Australian Capital Territory (also postal symbol),ACT UP-AIDS Coalition to Unleash Power | |
| ACTD Advanced Concept Technology Demonstration | |
| ACTF (U.S.) Army Constructive Training Federation,Australian Children's Television Foundation,ACT-R-ACT-Rational (cognitive model),ACT-R/PM-ACT-R/Perceptual-Motor (cognitive model) | |
| ACTU Australian Council of Trade Unions | |
| ACU American Conservative Union | |
| ACUF BGN Advisory Committee on Undersea Features, American Conservative Union Foundation | |
| ACV Armoured Combat Vehicle | |
| AD Air Defence-Andorra (ISO 3166 digram)-Anno Domini (Latin, "In the year of our Lord") | |
| ADA | |
| ADAC (a/i) Allgemeiner Deutscher Automobil-Club (German, "General German Automobile Club") | |
| ADAGE Air Defense Air to Ground Engagement (simulation) | |
| ADAP AIDS Drug Assistance Program | |
| ADAS (a/i) Asiago-DLR Asteroid Survey | |
| ADAT Alesis Digital Audio Tape (recording format) | |
| ADatP Automated Data Processing | |
| ADATS Agricultural Development and Training Society-Air Defence Anti-Tank System-Australian Defence Air Traffic System | |
| ADB Asian Development Bank | |
| ADC | |
| ADCTS Advanced Distributed Combat Training System | |
| ADD Analog Digital Digital (CD quality)-Attention-Deficit Disorder-Administration on Developmental Disabilities | |
| ADDIE Analyze Design Develop Implement and Evaluate | |
| ADDNS Advanced Deployable Day/Night Simulation | |
| ADF Australian Defence Force-African Development Foundation | |
| ADGB Air Defence of Great Britain | |
| ADHD Attention-Deficit Hyperactivity Disorder | |
| ADHS Attention-Deficit Hyperactivity Syndrome | |
| ADI Acceptable/Allowable Daily Intake | |
| ADIZ (a/i) Air Defence Identification Zone | |
| ADL Anti-Defamation League | |
| ADM Administrative- | |
| ADOA (a/i) Air Defence Operations Area | |
| ADP Adenosine DiPhosphate-Army Doctrine Publication (UK, Canada, Australia)-Automatic/Automated Data Processing | |
| ADRG Arc-second Raster Chart (ARC) Digitized Raster Graphics | |
| ADS (a/i) Active Denial System-Astrophysics Data System-Attention Deficit Syndrome | |
| ADSR Attack, Decay, Sustain, Release (sound envelope specification) | |
| ADT Atlantic Daylight Time (UTC−3 hours) | |
| ADTB Army Doctrine and Training Bulletin | |
| ADW Air Defence Warning | |
| ae Avestan language (ISO 639-1 code) | |
| AE Armed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram; FIPS 10-4 country code), Artix Entertainment,American Eagle,A&E-(a/i) Arts & Entertainment Network, the original name for the U.S. TV channel now known as A&E Network | |
| AED United Arab Emirates dirham (ISO 4217 currency code) | |
| AEDT Australian Eastern Daylight Time | |
| AEF American Expeditionary Force | |
| AEGIS Airborne Early warning Ground environment Interface Segment (fake etymology) | |
| AESR Aeronautical Equipment Service Record | |
| AEST Australian Eastern Standard Time | |
| aet After extra time (Football) | |
| AEW Airborne early warning,Airborne electronic warfare,All Elite Wrestling (US professional wrestling promotion),AF[edit] | |
| af Afrikaans language (ISO 639-1 code) | |
| aF Attofarad | |
| AF Afghanistan (FIPS 10-4 country code; ISO 3166 digram), Air Force,As fuck | |
| AFA U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish, "Argentine Football Association") | |
| AFAIC As Far As I'm Concerned | |
| AFAICT As Far As I Can Tell | |
| AFAIK As Far As I Know | |
| AFAIR As Far As I Remember/Recall | |
| AFAM (i/a) Associazione Friulana di Astronomia e Meteorologia (Italian, "Friuli Association of Astronomy and Meteorology"), Department of African and Afro-American Studies, University of North Carolina at Chapel Hill — notable for its links to the school's academic-athletic scandal in the 2010s | |
| AFATDS Advanced Field Artillery Tactical Data System | |
| AFC American Football Conference,Approved for construction,Asian Football Confederation | |
| AFCEA Armed Forces Communications and Electronics Association | |
| AfD Allianz für Deutschland ("Alliance for Germany"), former political alliance in East Germany,Alternative für Deutschland ("Alternative for Germany"), current German political party | |
| AFD Active Format Description, a technical standard for TV or set-top box decoders,Advanced Format Drive, a type of computing storage device,Adjustable-frequency drive,Adult Film Database, web-based database of adult cinema,Agence française de développement ("French Development Agency"), a French international development agency,Alliance des forces démocratiques (French; "Alliance of Democratic Forces"), an Ivorian political alliance,Alliance for Freedom and Democracy, an Eritrean political party | |
| AFDB African Development Bank | |
| AFES Automatic Fire Extinguishing System | |
| AFG Afghanistan (ISO 3166 trigram) | |
| AFGAM Amazon Facebook Google Apple Microsoft | |
| AFI French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977), "Agencia Federal de Investigaciónes" (México) | |
| AFIS Automated Fingerprint Identification System,American Forces Information Service | |
| AFIST Abrams Full Crew Interactive Skills Trainer | |
| AFJ April Fool's Joke | |
| AFK Away From Keyboard (Internet chat abbreviation) | |
| AFL American Federation of Labor,American Football League — either the 1960s league that merged into the National Football League, or one of several other leagues of American football,Arena Football League,Australian Football League,AFL-CIO-American Federation of Labor-Congress of Industrial Organizations | |
| AFLAC American Family Life Assurance Company of Columbus | |
| AFM Army Field Manual (UK; the U.S. more frequently uses just FM)-Atomic Force Microscope-Aviation Fleet Maintenance | |
| AFN Afghani (ISO 4217 currency code) | |
| AFO Association of Field Ornithologists | |
| AFOSR U.S. Air Force Office of Scientific Research | |
| AFP Agence France-Presse (French, "French Press Agency"),Australian Federal Police | |
| AFQT Armed Forces Qualification Test | |
| afr Afrikaans language (ISO 639-2 code) | |
| AFRC Air Force Reserve Command | |
| AFRL Air Force Research Laboratory | |
| AFRRI (i, U.S.) Armed Forces Radiobiology Research Institute | |
| AFRTS Armed Forces Radio and Television Service | |
| AFS Active Front Steering,Air Facility Sub-System,Amniotic Fluid-derived Stem cell,AFS&A or AFSA-U.S. Air Force Studies and Analysis | |
| AFSC U.S. Air Force Staff College (obsolete; replaced with JFSC),U.S. Air Force Systems Command | |
| AFSCN U.S. Air Force Satellite Control Network | |
| AFSPC Air Force Space Command | |
| AFT American Farmland Trust | |
| AFV armoured fighting vehicle | |
| AFWA Air Force Weather Agency,Association of Fish and Wildlife Agencies,AG[edit] | |
| ag Attogram | |
| Ag Silver (Latin argentum) | |
| AG air gunner,Aktiengesellschaft (German, "incorporated"), Algeria (FIPS 10-4 country code),Antigua and Barbuda (ISO 3166 digram),Assemblies of God | |
| AGA (a/i) AB Gas-accumulator ("ah-gah", Swedish company),Advanced Graphics Architecture | |
| AGARD Advisory Group for Aerospace Research and Development | |
| AGARDograph Advanced Guidance for Alliance Research and Development publication | |
| AGASA Akeno Giant Air Shower Array (cosmic ray detector) | |
| AGB Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance | |
| AGC Apollo Guidance Computer,Automatic Gain Control | |
| AGC Adjutant General's Corps (British Army) | |
| AGDC Australian Game Developers' Conference | |
| AGI Auxiliary Group Intelligence | |
| AGL Above Ground Level | |
| AGM Annual General Meeting | |
| AGN Active Galactic Nucleus | |
| AGO Angola (ISO 3166 trigram) | |
| AGP Accelerated Graphics Port | |
| AGRICOLA Agriculture Online Access | |
| AGS Alaska Ground Station (LandSat) | |
| AGTS Advanced Gunnery Training System | |
| AGU American Geophysical Union | |
| AGW Autonomous Guided Weapon | |
| aH Attohenry | |
| Ah Ampere-hour | |
| AH Attack Helicopter | |
| AHA American Heart Association | |
| AHCPR Agency for Health Care Policy and Research (obsolete; replaced with AHRQ) | |
| AHEC Australian Health Ethics Committee | |
| AHPCRC Army High Performance Computing Research Center | |
| AHQ Air Headquarters | |
| AHRQ Agency for Healthcare Research and Quality | |
| AHS American Housing Survey | |
| AI Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence, Anguilla (ISO 3166 digram) | |
| AIA Aerospace Industries Association,American Institute of Architects, Anguilla (ISO 3166 trigram) | |
| AIAA American Institute of Aeronautics and Astronautics | |
| AIC African Independent Church,Animal Identification Coordinator | |
| AICD Australian Institute of Company Directors | |
| AICMFP And I Claim My Five Pounds | |
| AID U.S. Agency for International Development | |
| AIDS Acquired Immune Deficiency Syndrome | |
| AIM many, including AOL Instant Messenger, Australian Institute of Management; see entry | |
| AIMP Aurora Incremental Modernization Project | |
| AIPAC American Israel Public Affairs Committee | |
| AIR Aircraft Inventory Record | |
| AIRFA American Indian Religious Freedom Act | |
| AIRS (a/i) Aerometric Information Retrieval System (obsolete; replaced with AFS) | |
| AIS Australian Institute of Sport,Automatic Identification System | |
| AISB (British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour | |
| aJ Attojoule | |
| AJ Azerbaijan (FIPS 10-4 country code) | |
| Ajax Asynchronous JavaScript And XML | |
| AJD Astronomical Julian day | |
| AJP Allied Joint Publication | |
| AJPW All Japan Pro Wrestling | |
| ak Akan languages (ISO 639-1 code) | |
| aK Attokelvin | |
| AK Alaska (postal symbol) | |
| aka Akan languages (ISO 639-2 code) | |
| AKA Above knee amputation (orthopaedic usage) | |
| AKDT Alaska Standard Daylight Saving Time (UTC−8 hours) | |
| AKST Alaska Standard Time (UTC−9 hours) | |
| AKP Adalet ve Kalkınma Partisi (Turkish, "Justice and Development Party") | |
| aL Attolitre | |
| Al Aluminium | |
| AL Alabama (postal symbol),Albania (FIPS 10-4 country code; ISO 3166 digram), Anno Lucis (Latin, "Year of Light", in Masonic tradition, most often seen on plaques bearing the founding dates of buildings, in years AD and years AL) | |
| ALA Åland Islands (ISO 3166 trigram) | |
| ALAP As Long/Late As Possible | |
| ALARM Air-Launched Anti-Radar Missile | |
| ALB Albania (ISO 3166 trigram) | |
| ALD Accounting Line Designator (nuclear weapon targeting) | |
| ALERT Advanced Linked Extended Reconnaissance and Targeting-Attack and Launch Early Reporting to Theatre | |
| ALF Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front | |
| ALG Algeria (IOC and FIFA trigram, but not ISO 3166) | |
| ALGOL ALGOrithmic Language | |
| ALL Albanian lek (ISO 4217 currency code) | |
| ALOA Associated Locksmiths of America, Inc. | |
| ALOC Air Lines Of Communication, Average Length of Calls | |
| ALPA Air Line Pilots Association | |
| ALS Amyotrophic Lateral Sclerosis-Automatic Landing System | |
| ALSHS Abraham Low Self-Help Systems | |
| ALSP Aggregate Level Simulation Protocol | |
| ALTE Association of Language Testers in Europe | |
| ALTACS Automated decision Logic Tactical Air Combat Simulation | |
| am Amharic language (ISO 639-1 code),Attometre | |
| Am Americium | |
| AM many, including Amplitude Modulation and Ante Meridiem; see entry, Armenia (FIPS 10-4 country code; ISO 3166 digram) | |
| AM1 Airman 1st class | |
| AMA American Medical Association,Australian Medical Association | |
| AMAPS Aircraft, Missile, Avionics Performance Simulation | |
| AMC Adaptive modulation and coding (digital communications),U.S. Air Mobility Command,American Motors Corporation,American Movie Classics (TV network; now known simply by the initials),U.S. Army Materiel Command | |
| AMCB U.S. Army/Marine Corps Board | |
| AMD Advanced Micro Devices,Age-related Macular Degeneration, Armenian dram (ISO 4217 currency code) | |
| AMF Afghan Military Force | |
| AMFOM Advanced Missile Fly Out Model ("am-fomm") | |
| AMFR Age-specific Marital Fertility Rate,Amplitude Modulation Following Response | |
| AMFRS Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System | |
| amh Amharic language (ISO 639-2 code) | |
| AML Acute Myeloid Leukaemia | |
| AMLCD Active Matrix Liquid Crystal Display | |
| AMLO Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office — separate government agencies in Taiwan and Thailand | |
| AMO Atlantic Multidecadal Oscillation | |
| AMOLED Active-matrix organic light-emitting diode | |
| AMOS Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory | |
| AMP Adenosine MonoPhosphate,Automated Mission Planner | |
| AMRAAM Advanced Medium-Range Air-to-Air Missile | |
| AMRDEC U.S. Aviation & Missile Research, Development, & Engineering Center | |
| AMS Agriculture Marketing Service,American Mathematical Society | |
| AMSAA (i/a) U.S. Army Materiel Systems Analysis Activity | |
| AMSO (i/a) U.S. Army Model and Simulation Office | |
| AMSU Advanced Microwave Sounding Unit | |
| AMTE UK Admiralty Marine Technology Establishment (1977-1984) | |
| an Aragonese language (ISO 639-1 code) | |
| aN Attonewton | |
| AN Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram) | |
| ANA Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body, Australian National Airways,Australian Natives' Association | |
| ANC African National Congress | |
| AND Andorra (ISO 3166 trigram) | |
| ANFO Ammonium nitrate/fuel oil (explosive) | |
| ANG Air National Guard, Angola (IOC and FIFA trigram, but not ISO 3166), Netherlands Antillian guilder (ISO 4217 currency code) | |
| ANGLiCo Air/Naval Gunfire Liaison Company | |
| ANL Argonne National Laboratory | |
| ANM Acoustic Noise Monitor | |
| ANOVA ANalysis Of VAriance | |
| ANS Applied and Natural Sciences | |
| ANSI American National Standards Institute | |
| ANTM | |
| ANT Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram, but not ISO 3166 or FIFA) | |
| ANTY Acronyms, No Thank You | |
| ANWR Arctic National Wildlife Refuge /ˈænwɑːr/ | |
| ANZ Australia and New Zealand Banking Group | |
| ANZAC Australian and New Zealand Army Corps | |
| AO Angola (FIPS 10-4 country code; ISO 3166 digram)-Approach Officer (submarine)-Area of Operations | |
| AOA | |
| AOC Air Operations Centre-Air Officer Commanding | |
| AOD Adrenalin O.D. (punk rock band) | |
| AOI Angle Of Incidence Arab Organization for Industrialization | |
| AOL America OnLine | |
| AOR Area of Responsibility | |
| AOSTH Adventures of Sonic the Hedgehog | |
| AOTS Attack of the Show! | |
| AOU American Ornithologists' Union | |
| AP Advanced Placement,Air Publication, Andhra Pradesh (Indian state code), Armed Forces Pacific (postal symbol), Associated Press,Auto Pilot | |
| APA | |
| APB All Points Bulletin (police jargon) | |
| APC Armoured Personnel Carrier,Armour Piercing Capped (ammunition) | |
| APEC Asia Pacific Economic Cooperation | |
| APCNR Armour-Piercing, Composite Non-Rigid (ammunition) | |
| APCR Armour-Piercing, Composite Rigid (ammunition) | |
| APDS Armour-Piercing, Discarding-Sabot (ammunition) | |
| APEDS AMSAA Performance Estimates Data System | |
| APEX Applied Physics Express | |
| APFSDS Armour-Piercing, Fin-Stabilised, Discarding Sabot (ammunition) | |
| APHA American Public Health Association | |
| APHE Armour-Piercing, High Explosive (ammunition) | |
| APHIS Animal and Plant Health Inspection Service | |
| API Application Programming Interface | |
| APL A Programming Language,Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University) | |
| APM Advanced Power Management | |
| APNP Advanced Practice Nurse Prescriber | |
| APOD Aerial Port (Airport) Of Debarkation | |
| APOE Aerial Port (Airport) Of Embarkation | |
| APOLLO Apache Point Observatory Lunar Laser-ranging Operation | |
| APP Allied Procedural Publication | |
| APR Annual Percentage Rate | |
| APS Advanced Photo System (cf. APS-C, an image sensor format based on the size of the original APS film frame),American Physical Society,Antiphospholipid Antibody Syndrome,AQ[edit] | |
| AQ AdventureQuest, American Samoa (FIPS 10-4 territory code),Antarctica (ISO 3166 digram), Automatic qualifier, a term used by U.S. sports media from 1998 to 2013 to refer to the six conferences whose champions automatically entered the now-defunct Bowl Championship Series of college football | |
| AQIM Al-Qaeda in the Islamic Maghreb | |
| ar Arabic language (ISO 639-1 code) | |
| Ar Argon | |
| AR Argentina (FIPS 10-4 country code; ISO 3166 digram)-Arkansas (postal symbol)-Armour-Arunachal Pradesh (Indian state code) | |
| ara Arabic language (ISO 639-2 code) | |
| ARAG Advanced Research and Assessment Group | |
| ARB Administrative Review Board | |
| ARBA (a/i) Army Review Boards Agency | |
| ARC Arc-second Raster Chart-Appalachian Regional Commission | |
| ARCA Automobile Racing Club of America | |
| ARCENT United States Army Central Command | |
| ARDA Advanced Research and Development Activity (became DTO 2006) | |
| ARE UK Admiralty Research Establishment (-1991)-United Arab Emirates (ISO 3166 trigram) | |
| ARF ASEAN Regional Forum | |
| arg Aragonese language (ISO 639-2 code) | |
| ARG Argentina (ISO 3166 trigram) | |
| ARH Armed Reconnaissance Helicopter | |
| ARI Acute Respiratory Infection-U.S. Army Research Institute for the Behavioral and Social Sciences | |
| ARL UK Admiralty Research Laboratory (1921-1977)-U.S. Army Research Laboratory-UIUC Aviation Research Laboratory | |
| ARM Anti-Radiation Missile-Adjustable-rate mortgage-Armenia (ISO 3166 trigram) | |
| ARNet Acquisition Reform Network | |
| ARP Address Resolution Protocol-Applied Research Programme | |
| ARPA Advanced Research Projects Agency | |
| ARRC ACE Rapid Reaction Corps | |
| ARRF Allied Rapid Reaction Force | |
| ARRL American Radio Relay League | |
| ARS Agricultural Research Service-Argentine peso (ISO 4217 currency code) | |
| ARSC Arctic Region Supercomputing Center | |
| ARSPACE U.S. Army Space Command | |
| ART Adaptive Resonance Theory-Anti-Retroviral Therapy | |
| ARTCC Air Route Traffic Control Center | |
| ARWG Army Research Working Group ("are-wig") | |
| as Adult swim, Assamese language (ISO 639-1 code),Attosecond | |
| aS Attosiemens | |
| As Arsenic | |
| AS American Samoa (postal symbol; ISO 3166 digram),Australia (FIPS 10-4 country code),Assam / Asom (Indian state code) | |
| AS ActionScript | |
| ASA AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines | |
| ASAP As Soon As Possible | |
| ASARS Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System | |
| ASB Associated Student Body-Alternative Service Book (Church of England) | |
| asbl association sans but lucratif (French "Non-profit organisation") | |
| ASBO Antisocial Behavior Order | |
| ASCAP American Society of Composers, Authors, and Publishers | |
| ASCC Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee | |
| ASCIET All Services Combat Identification Evaluation Team | |
| ASCII American Standard Code for Information Interchange | |
| ASD (U.S.) Assistant Secretary of Defense,Autism spectrum disorder,ASD(C3I)-(U.S.) (Command, Control, Communications, & Intelligence),ASD(FMP)-(U.S.) Assistant Secretary of Defense (Force Management Policy),ASD(HA)-(U.S.) Assistant Secretary of Defense (Health Affairs),ASD(ISA)-(U.S.) Assistant Secretary of Defense (International Security Affairs),ASD(ISP)-(U.S.) Assistant Secretary of Defense (International Security Policy),ASD(LA)-(U.S.) Assistant Secretary of Defense (Legislative Affairs),ASD(PA)-(U.S.) Assistant Secretary of Defense (Public Affairs),ASD(RA)-(U.S.) Assistant Secretary of Defense (Reserve Affairs),ASD(SO&HA)-(U.S.) Assistant Secretary of Defense (Special Operations & Humanitarian Assistance),ASD(SO/LIC)-(U.S.) (Special Operations & Low-Intensity Conflict),ASD(S&R)-(U.S.) Assistant Secretary of Defense (Strategy & Requirements),ASD(S&TR)-(U.S.) Assistant Secretary of Defense (Strategy & Threat Reduction) | |
| ASDIC Allied Submarine Detection Investigation Committee (Sonar) | |
| ASEAN Association of Southeast Asian Nations | |
| ASFAR Americans for a Society Free of Age Restrictions | |
| ASG Area Support Group | |
| ASIC Australian Securities and Investments Commission-Aviation Security Identification Card | |
| ASICS Anima sana in corpore sano (Latin, "A sound mind in a sound body") (athletic shoe manufacturer) | |
| ASIO Australian Security Intelligence Organisation,Audio stream input output | |
| ASIP Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor | |
| ASL Above Sea Level,American Sign Language (also known as Ameslan),"Age, Sex, Location?" (Internet slang) | |
| asm Assamese language (ISO 639-2 code) | |
| ASM Air-to-Surface Missile, American Samoa (ISO 3166 trigram), American Society for Metals,American Society for Microbiology,Association Sportive Montferrandaise (French, "Clermont-Ferrand Sporting Association"), as in ASM Clermont Auvergne | |
| ASMB American Society for Matrix Biology,Adult Swim Message Board | |
| ASME American Society of Mechanical Engineers,American Society of Magazine ors | |
| ASMP Air-Sol Moyenne Portée missile (French "Medium-range air to surface"), Asymmetric multiprocessing | |
| ASMR Autonomous Sensory Meridian Response | |
| ASN Associate of Science in Nursing | |
| ASOC (a/i) Air Sovereignty Operations Centre,Air Support Operations Centre,Airport Security and Operations Centre,Antarctic and Southern Ocean Coalition,Atlanta Symphony Orchestra Chorus,Australian Standard Offence Classification | |
| ASP Active Server Pages,American Society of Primatologists,Ammunition Supply Point,Application Service Provider (cf internet service provider),Astronomical Society of the Pacific,Association of Surfing Professionals | |
| ASPI Australian Strategic Policy Institute | |
| ASR Alkali-silica reaction,Anti Slip Regulation | |
| ASRAAM Advanced Short-Range Air-to-Air Missile | |
| ASSC Association for the Scientific Study of Consciousness | |
| AST Atlantic Standard Time (UTC−4 hours) | |
| ASTIA Armed Services Technical Information Agency | |
| ASTM American Society for Testing and Materials | |
| ASTREA Aerial Support To Regional Enforcement Agencies (sheriff's air support unit) | |
| ASUN Atlantic Sun (Conference) | |
| ASUW AntiSUrface Warfare | |
| ASVAB Armed Services Vocational Aptitude Battery (taken by juniors in high school in the USA) | |
| ASVEL Association Sportive Villeurbanne Éveil Lyonnais (Association Sportive is French for "Sporting Association"; the club was founded through the merger of AS Villeurbanne and Éveil Lyonnais) | |
| ASW AntiSubmarine Warfare | |
| ASWORG (U.S.) AntiSubmarine Warfare Operations Research Group | |
| ASX Advanced Stream Redirector,Australian Securities Exchange,AT[edit] | |
| aT Attotesla | |
| At Astatine | |
| AT | |
| ATA | |
| ATAC Air Transportable Acoustic Communications | |
| ATACMS Army TACtical Missile System | |
| ATAPI Advanced Technology Attachment Packet Interface | |
| ATAS Air-To-Air Stinger (missile) | |
| ATAT Aiken Tactical Airsoft Team / Star Wars vehicle | |
| ATB Active Time Battle-British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979) | |
| ATC Air Traffic Control-Air Training Corps-U.S. Air Transport Command (1942-1948)-Athletic Trainer, Certified (www.nata.org) | |
| ATCCIS Army Tactical Command and Control Information System | |
| ATESS Aerospace and Telecommunications Engineering Support Squadron | |
| ATF French Southern Territories (ISO 3166 trigram)-(U.S.) Bureau of Alcohol, Tobacco, Firearms and Explosives (from its previous name, which did not include "Explosives") | |
| ATG Antigua and Barbuda (ISO 3166 and FIFA trigram) | |
| ATGM Anti-Tank Guided Missile | |
| ATGW Anti-Tank Guided Weapon | |
| ATI Allied Telesyn International, Inc.-Array Technologies Incorporated. (ATI Technologies) | |
| Atisbo a Local Government Area in Nigeria named for constituent communities (Ago-Are, Tede, Irawo, | |
| ATK Attack | |
| ATL Atlanta, Georgia, the largest city and capital of Georgia | |
| ATLAS All-Terrain Lifter Army System-Assessment Tool for LAnd Systems | |
| ATM Automated Teller Machine-Asynchronous Transfer Mode-At The Moment | |
| ATN Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983) | |
| ATO Air Tasking Order-Australian Taxation Office | |
| ATP Adenosine TriPhosphate-Allied Tactical Publication-Ammunition Transfer Point | |
| ATSD (U.S.) Assistant Secretary of Defense | |
| ATSDR Agency for Toxic Substances and Disease Registry | |
| ATV All-Terrain Vehicle | |
| ATWA Air, Trees, Water, Animals | |
| Au Gold (Latin Aurum) | |
| AU African Union (was OAU before 2000)- | |
| AUC Ab Urbe Condita / Anno Urbis Conditae (Latin "from the founding of the city" / "in the year since the founding of the city") (of Rome)-Area Under the Curve (concentration time curve; medicine) | |
| AUD Australian dollar (ISO 4217 currency code) | |
| AUS Australia (ISO 3166 trigram) | |
| AUSCANNZUKUS Australia, Canada, New Zealand, United Kingdom, United States (security designation) | |
| Auslan Australian Sign Language | |
| AUT Austria (ISO 3166 trigram) | |
| AUTL Army Universal Task List | |
| av Avar language (ISO 639-1 code) | |
| aV Attovolt | |
| Av Aperture value (photographic mode) | |
| AV Anguilla (FIPS 10-4 territory code), Audio-Visual, Aviation | |
| ava Avar language (ISO 639-2 code) | |
| AVA American Viticultural Area | |
| AVB Audio Video Bridging | |
| AVDLR Aviation Depot Level Repair | |
| ave Avestan language (ISO 639-2 code) | |
| AVGP Armoured Vehicle, General Purpose | |
| AVI Audio Video Interleave | |
| AVIM Aviation Intermediate Maintenance | |
| AVLB Armoured Vehicle Launched Body | |
| AVM Air Vice-Marshal, Arteriovenous malformation | |
| AVO Apprehended Violence Order | |
| AVP Arubaanse Volkspartij | |
| AVP Association of Volleyball Professionals | |
| AVRE Armoured Vehicle Royal Engineers | |
| AVTB Armoured Vehicle Test Bed, Aviation Test Bed | |
| AVUM Aviation Unit Maintenance | |
| AVVO Acute Vaginal Venereal Outbreak | |
| aW Attowatt | |
| AW Aruba (ISO 3166 digram) | |
| AWA American Wrestling Association | |
| AWACS Airborne Warning And Control System | |
| AWC Air Warfare Centre | |
| AWD many, including All Wheel Drive; see entry | |
| AWE (i/a) Advanced Warfighting Experiment | |
| AWG Aruban guilder (ISO 4217 currency code) | |
| AWOL Absent Without Official Leave / Absent WithOut Leave (military jargon) | |
| AWP Awaiting Parts (SM&R code) | |
| AWSIM Air Warfare SIMulation | |
| AWST Australian Western Standard Time | |
| AWW Above Water Warfare | |
| AX Åland Islands (ISO 3166 digram) | |
| AXP Ambulance eXchange Point | |
| ay Aymara language (ISO 639-1 code) | |
| AY Antarctica (FIPS 10-4 territory code) | |
| AYBABTU All Your Base Are Belong To Us | |
| aym Aymara language (ISO 639-2 code) | |
| AYU As Yet Unknown | |
| az Azerbaijani language (ISO 639-1 code) | |
| AZ Arizona (postal symbol),Azerbaijan (ISO 3166 digram), Alkmaar Zaanstreek (Dutch football club) | |
| aze Azerbaijani language (ISO 639-2 code) | |
| AZE Azerbaijan (ISO 3166 trigram) | |
| AZN Azerbaijani manat (ISO 4217 currency code) | |
| AZUR Actions en zone urbaine (French, Urban Operations) | |
| B10 Ben 10 | |
| B2B Business-to-business electronic commerce | |
| B2C Business-to-consumer electronic commerce | |
| B2E Business-to-employee electronic commerce | |
| B2M Business to many | |
| BAR Barbados (IOC trigram, but not FIFA or ISO 3166), British American Racing,Browning Automatic Rifle,Buy-American Restrictions,BARD -Binational Agricultural Research and Development fund (between the US and Israel),BARDA -Biomedical Advanced Research and Development Authority,BART -Bay Area Rapid Transit,BAS -Battalion Aid Station,BASE -Building, Antenna, Span, Earth (parachute from),BASF -Badische Anilin und Soda Fabrik (Baden Aniline and Soda Factory, a German chemicals company),BASIC -Beginner's All-purpose Symbolic Instruction Code (acronym was added later, originally it was simply Basic),BAT -(a/i) Basic Aid Training,BATF -U.S. Bureau of Alcohol, Tobacco, and Firearms,BATS -Behavior Analysis Training System -Bradley Advanced Training System,BATTeRS -Bisei Asteroid Tracking Telescope for Rapid Survey,BB[edit] | |
| BB Barbados (ISO 3166 digram; FIPS 10-4 country code), Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee | |
| BBB Better Business Bureau,Blood-brain barrier | |
| BBC Breeding Bird Census,British Broadcasting Corporation, Bumper to Back of Cab (trucking measurement) | |
| BBD Barbadian dollar (ISO 4217 currency code), Bowel Bladder Dysfunction | |
| BBL Be Back Later,Bird Banding Laboratory,British Basketball League,BBN -Bolt, Beranek and Newman,BBQ -Barbecue[1] | |
| BBS Breeding Bird Survey (North America),Brigade/Battalion Battle Simulation,Bulletin Board System,BBSRC -U.K. Biotechnology and Biological Sciences Research Council,BBVA -Banco Bilbao Vizcaya Argentaria (Spanish bank) | |
| BBYO B'nai B'rith Youth Organization | |
| BC Before Christ,Blind Copy (in emailers),Boston College, Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol) | |
| BCA Bachelor of Computer Application,Black Coaches & Administrators,BCC -Blind Carbon Copy | |
| BCCI Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD -Binary-Coded Decimal | |
| BCE Banque centrale européenne (French, "European Central Bank"),Battlefield Co-ordination Element,BC Electric, a former name for BC Hydro,Before Common Era,BCER -British Columbia Electric Railway,BCFG -Patchy Fog (METAR Code),BCIS (fratricide avoidance system) -Battlefield Combat Identification System,BCLL -Bibliography of Celtic Latin Literature,BCPL -Basic Combined Programming Language (progenitor of C) | |
| BCS Bachelor of Computer Science,Bardeen, Cooper, and Schrieffer superconduction theory,Bowl Championship Series (US college football),BCT -Brigade Combat Team,BD[edit] | |
| BD Bangladesh (ISO 3166 digram),Bermuda (FIPS 10-4 territory code),BDA -British Dental Association | |
| BDD Body Dysmorphic Disorder,British Defence Doctrine,Bde -Brigade,BDFL -Benevolent Dictator For Life,BDI -Burundi (ISO 3166 trigram),BDNF -Brain-Derived Neurotrophic Factor,BDO -Battle Dress Overgarment,BDOS -Basic Disk Operating System; part of CP/M | |
| BDS -Bachelor of Dental Surgery,Boycott, Divestment and Sanctions, a movement advocating various boycotts of Israel in the context of the Arab-Israeli conflict,BDSM -Bondage and Discipline, Domination and Submission, Sadism and Masochism | |
| BDT Bangladeshi taka (ISO 4217 currency code), Bureau de développement des télécommunications (Telecommunication Development Bureau, became ITU-D),BDU -Battle-Dress Uniform,BE[edit],be -Belarusian language (ISO 639-1 code),Be -Beryllium,BE -Belgium (FIPS 10-4 country code; ISO 3166 digram) | |
| BEA Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel -Belarusian language (ISO 639-2 code),BEL -Belgium (ISO 3166 trigram),BEM -British Empire Medal -Bug-Eyed Monster,ben -Bengali language (ISO 639-2 code),BEN -Benin (ISO 3166 trigram),BEO -Banquet Event Order,BERC -Business Environmental Resource Center,BER -Bit Error Rate | |
| BES Budget Estimate Submission, Caribbean Netherlands (ISO 3166 trigram; from the entity's alternate name of Bonaire, Sint Eustatius and Saba),BESS -Business, Education, and Social Sciences,BET -(a/i) Black Entertainment Television,BETS -Bradley Embedded Training System,BF[edit],BF -The Bahamas (FIPS 10-4 country code) -Burkina Faso (ISO 3166 digram),b/f -before,BFA -Burkina Faso (ISO 3166 trigram),BfArM -Bundesinstitut für Arzneimittel und Medizinprodukte, German governmental institute for drugs and medical devices,BFF -Best Friends Forever,BFI -British Film Institute,BFR -Biennial flight review,BFR -Brominated Flame Retardant,BFS -Belfast International Airport (IATA airport code),BFSA -Blue Force Situation Awareness,BFT -Blue Force Tracking,BFX -Bioinformatics,BG[edit],bg -Bulgarian language (ISO 639-1 code),BG -Bangladesh (FIPS 10-4 country code) -, Battle Group -Body Guard -Brigadier General -Bulgaria (ISO 3166 digram),BGA -Ball Grid Array -Brandy and Ginger Ale (alcoholic beverage),BGD -Bangladesh (ISO 3166 trigram),BGN -U.S. Board on Geographic Names -Bulgarian lev (ISO 4217 currency code),BGR -Bulgaria (ISO 3166 trigram),BGS -Bristol Grammar School -British Geographical Survey,BGWG -Battle Group Wargame (military simulation; "big wig"),BH[edit],bh -Bihari languages (ISO 639-1 code),Bh -Bohrium | |
| BH Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code),BHD -Bahraini dinar (ISO 4217 currency code),BHR -Bahrain (ISO 3166 trigram) | |
| BHS British Home Stores, The Bahamas (ISO 3166 trigram), | |
| BI Bislami language (ISO 639-1 code), | |
| Bi Bismuth | |
| BI Burundi (ISO 3166 digram) | |
| BIAP Baghdad International Airport -Biafran pound | |
| BICS Battlefield Information and Communication System | |
| BID bis in die (Latin, "twice a day") | |
| BIDST British Institute of Dental and Surgical Technologists, | |
| BIF -Burundian franc (ISO 4217 currency code), | |
| bih -Bihari languages (ISO 639-2 code), | |
| BIH -Bosnia and Herzegovina (ISO 3166 trigram), | |
| BIOS -Basic Input/Output System -British Institute of Organ Studies, | |
| BIP -Battlefield Interoperability Programme (ancestor of MIP) -Broadcast incremental power algorithm, | |
| bis -Bislami language (ISO 639-2 code), | |
| BISEPS -Battlefield Identification System Environment Performance Simulation, | |
| BIST -Built-In Self-Test, | |
| BIT -Bilateral Investment Treaty -Built-In Test, | |
| BITE -Built-In Test Equipment,BJ[edit],BJ -Benin (ISO 3166 digram) -Blowjob (oral sex),BJJ -Brazilian Jiu-Jitsu,BJP -Bharatiya Janata Party (Indian People's Party),BJT -Bipolar Junction Transistor,BK[edit],Bk -Berkelium,BK -Burger King -Bankrupt (most often seen as "gone BK") -Bosnia and Herzegovina (FIPS 10-4 country code),BKN -Broken Sky (METAR Code),BL[edit],BL -Bolivia (FIPS 10-4 country code) -British Leyland,BLCSE -Battle Laboratory Constructive Simulation Environment,BLDU -Blowing Dust (METAR Code),BLEVE -Boiling Liquid Expanding Vapour Explosion ("blevy"),BLOB -Binary Large OBject,BLR -Belarus (ISO 3166 trigram),BLSA -Blowing Sand (METAR Code),BLRSI -Battle Lab Reconfigurable Simulator (U.S. Army),BLSN -Blowing Snow (METAR Code),BLT -Bacon Lettuce Tomato (sandwich),BLUFOR -Blue Force (military),BLUI -(a/i) Body Language User Interface ("blooie"),BLZ -Belize (ISO 3166 trigram),BM[edit],bm -Bambara language (ISO 639-1 code),BM -Battle Management -Bermuda (ISO 3166 digram) -Myanmar (FIPS 10-4 country code; from Burma),BMA -British Medical Association,BMCC -Borough of Manhattan Community College,BMD -, Ballistic Missile Defence -Bermudian dollar (ISO 4217 currency code) -Boyevaya Mashina Desanta (Russian Боевая Машина Десанта, "Combat Vehicle Airborne") †[2] -British Military Doctrine,BMDG -British Military Doctrine Group,BMDO -(U.S.) Ballistic Missile Defense Organization ("bim-do"),BME -Biomedical Engineering -Black and Minority Ethnic group -Body Modification E-zine,BMEWS -(a/i) Ballistic Missile Early Warning System ("bee-mews"),BMI -Body Mass Index -Broadcast Music Incorporated,BMG -Bertelsmann Music Group,BML -Battle Management Language,BMNT -Begin Morning Nautical Twilight,BMP -Boyevaya Mashina Pekhoti (Russian Боевая Машина Пехоты, "Combat Vehicle for the Infantry") †[2],BMR -Basal metabolic rate -Bronirovannaya Mashina Razminirovaniya (Russian Бронированная Машина Разминирования, "Armoured Vehicle for Mine-Clearing") †[2],BMU -Bermuda (ISO 3166 trigram),BMW -Bayerische Motoren Werke (German, "Bavarian Motor Works"),BMX -Bicycle/Bike Moto (r) Cross,BN[edit],bn -Bengali language (ISO 639-1 code),Bn -Battalion,BN -Brunei (ISO 3166 digram; FIPS 10-4 country code),BND -Brunei dollar (ISO 4217 currency code),BnF -Bibliothèque nationale de France (French, "National Library of France") | |
| BNF Backus-Naur form (computing),British National Formulary,BNICE -Biological, Nuclear, Incendiary, Chemical, and Explosive Agents | |
| BNP British National Party,Banque Nationale de Paris, a predecessor to today's BNP Paribas,BNS -Bank of Nova Scotia,BNSF -(i/s) Burlington Northern Santa Fe (also AAR reporting mark),BO[edit],bo -Tibetan language (ISO 639-1 code) | |
| BO Back Orifice, Belarus (FIPS 10-4 country code), Biarritz Olympique (French rugby union club), Bolivia (ISO 3166 digram), Body odor,BO2k -Back Orifice 2000,BOAC -British Overseas Airways Corporation (predecessor of British Airways) | |
| BoAML Bank of America Merrill Lynch | |
| BOC British Orthodontic Society,British Oxygen Company,BÖC -Blue Öyster Cult,bod -Tibetan language (ISO 639-2 code),BOD -Biochemical Oxygen Demand,BODMAS -Brackets, Orders, Division, Multiplication, Addition, Subtraction,BOFH -Bastard Operator From Hell,BOGA -Bend Over and Grab Ankles,BOGOF -Buy One, Get One Free | |
| BOGs Bunch of Guys | |
| BOI Balance Of Investment,Basis Of Issue,BOL -Bolivia (ISO 3166 trigram) | |
| BOM Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting,BOP -Balance of Payments,BOPB -Biarritz Olympique Pays Basque (the complete name of the rugby club),BOPD -Barrel of Oil Per Day | |
| BOQ Bill Of Quotations,Bachelor Officers' Quarters,Bank Of Queensland,bos -Bosnian language (ISO 639-2 code),BOS -Battlefield Operating System | |
| BOT Balance of Trade, Botswana (IOC and FIFA trigram, but not ISO 3166), Build Operate Transfer, Bank of Thailand,BP[edit] | |
| BP Battle Position,British Petroleum (today, BP does not officially stand for anything), Solomon Islands (FIPS 10-4 country code; from British Protectorate of the Solomon Islands),Bp -Bishop,BPD -Bipolar Personality Disorder,BPM -Beats Per Minute,BPMo -Business Process Mobility | |
| BPV Battlefield Planning Visualization,Bovine papillomavirus,BQ[edit] | |
| BQ British Antarctic Territory (former ISO 3166 digram; merged with AQ in 1979),Caribbean Netherlands (current ISO 3166 digram; based on the entity's alternate name of Bonaire, Sint Eustatius and Saba),Navassa Island (FIPS 10-4 territory code),BR[edit],br -Breton language (ISO 639-1 code),Br -Bromine | |
| BR Brazil (ISO 3166 digram; FIPS 10-4 country code) -Bihar (Indian state code), British Rail,Break Ranks (marching band term),BRA -Brazil (ISO 3166 trigram),BRAG -Bicycle Ride Across Georgia,BRASS -Breathe, Relax, Aim, Sight, Squeeze (Acronym for using a rifle) | |
| BRB Barbados (ISO 3166 trigram), "Be Right Back" (Internet chat abbreviation),BRDM -Boyevaya Razvedyvatelnaya Dosornaya Mashina (Russian Боевая Разведывательная Дозорная Машина, "Combat Reconnaissance Patrol Vehicle") †[2],bre -Breton language (ISO 639-2 code),BRFSS -Behavioral Risk Factor Surveillance System ("burf-us", a CDC health survey covering the U.S. and its territories),BRI -Bathroom ers Institute (publishers of series of "Uncle John's Bathroom ers" books),BRIC -Brazil, Russia, India and China,BRICS -Brazil, Russia, India, China and South Africa,BRIMS -Behavior Representation In Modeling and Simulation (conference),BRL -Brazilian real (ISO 4217 currency code),BRM -Boyevaya Razvedyvatelnaya Mashina (Russian Боевая Разведывательная Машина, "Combat Reconnaissance Vehicle") †[2] | |
| BRN Bahrain (IOC trigram, but not FIFA or ISO 3166), Brunei (ISO 3166 trigram),BRSB -Battlefield Reasoning System Brianna,BRU -Brunei (IOC and FIFA trigram, but not ISO 3166),BS[edit],bs -Bosnian language (ISO 639-1 code) | |
| BS The Bahamas (ISO 3166 digram),Bassas da India (FIPS 10-4 territory code),Bachelor of Science degree,British subject | |
| Bullshit | |
| BSA Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area | |
| BSatCoP Benjamin Sniddlegrass and the Cauldron of Penguins | |
| BSD Bahamian dollar (ISO 4217 currency code), Berkeley Software Distribution (distinct from BSoD) | |
| BSE Bovine Spongiform Encephalopathy, better known as mad cow disease | |
| BSL Basketbol Süper Ligi (Turkish, "Basketball Super League"; top Turkish men's league),British Sign Language,BSMB -British Society for Matrix Biology | |
| BSN Baloncesto Superior Nacional (Spanish, "National Superior Basketball"; top Puerto Rican league),Bank Simpanan Nasional (Malay, "National Savings Bank"; government-owned Malaysian bank) | |
| BSNL Bharat Sanchar Nigam Limited, Bachelor of Science in Nursing,BSoD -Blue Screen of Death (distinct from BSD) | |
| BSP Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread), Business-sponsored,Bone sialoprotein | |
| BSS Block Starting with Symbol-see .bss,Boxed Set Syndrome-where one starts watching a boxed set of DVDs and just can't stop until you've watched them all | |
| BST Binary search tree,Blended Sales Tax, Bovine somatotropin, British Summer Time,BSW -British Standard Whitworth (screw thread),BSX -Bendigo Stock Exchange,BT[edit] | |
| Bt Baronet,Bacillus thuringiensis | |
| BT Baal teshuva (Hebrew, "master of return") -used to describe a Jew who adopts Orthodox Judaism as an adult,Bathythermograph, Bhutan (FIPS 10-4 country code; ISO 3166 digram), BitTorrent,British Telecom, the former name of the company now known as BT Group,BTDT -Been There, Done That,Bti -Bacillus thuringiensis israelensis,BTID -Battlefield Target Identification Device,BTIS -Battlefield Target Identification System | |
| BTN Bhutan (ISO 3166 trigram),Bhutanese ngultrum (ISO 4217 currency code),BTO -Built To Order,BTP -British Transport Police,BTR -Bronetransporter (БТР = Бронетранспортер "(Heavy) Armoured (Personnel) Transporter") †[2],BTU -British Thermal Unit,BTW -By The Way,BU[edit],BU -,Bulgaria (FIPS 10-4 country code) -,Burma (ISO 3166 digram; obsolete since 1989),BUAV -British Union for the Abolition of Vivisection,BUG-E -Battlefield Universal Gateway Equipment ("buggy"),bul -,Bulgarian language (ISO 639-2 code),BUL -,Bulgaria (IOC and FIFA trigram, but not ISO 3166),BUNO or BuNo -Bureau Number (aircraft serial number),BUR -,Burma (ISO 3166 trigram; obsolete since 1989),BV[edit],BV -,Background Vocals -,Battlefield Visualization -,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code) | |
| BVB Ballspielverein Borussia 09 e.V. Dortmund, the full German name of the football club known in English as Borussia Dortmund,Bursa de Valori București (Romanian for Bucharest Stock Exchange),BVD -Bradley, Voorhees & Day (underwear manufacturer),BVR -Beyond Visual Range,BVT -Bouvet Island (ISO 3166 trigram),BW[edit],B&W -Babcock & Wilcox -Black and White -Bowers & Wilkins,BW -Bring Wedges (ISO digram),BW -Botswana (ISO 3166 digram),BWA -Botswana (ISO 3166 trigram),BWARS -Bees, Wasps & Ants Recording Society,BWC -Biological and Toxin Weapons Convention,BWP -Botswana pula (ISO 4217 currency code),BWR -Boiling-Water Reactor,BX[edit],BX -Base eXchange -,BY[edit],BY -,Burundi (FIPS 10-4 country code) -,Belarus (ISO 3166 digram),BYOB -Bring Your Own Bottle (or,"beer", "beverage", or "booze") (multiple, but similar, meanings),BYOC -Bring Your Own Computer (play on BYOB),BYOF -Bring Your Own Flask,BYR -Belarusian ruble (ISO 4217 currency code),BYS -,Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992),BYU -Brigham Young University,BZ[edit],BZ -Belize (ISO 3166 digram),BZD -Belize dollar (ISO 4217 currency code),BZP -Benzylpiperazine,References[edit],^ See references and discussion under Barbecue and :List of acronyms and initialisms: B. Examples of use: [1], [2] Archived 2016-03-04 at the Wayback Machine, [3], [4],^ a b c d e f "Archived copy" (PDF). Archived from the original (PDF) on 2008-02-27. Retrieved 2008-02-27.CS1 maint: Archived copy as title (link),^ http://www.tbkarunia.com[permanent dead link],vteList of acronyms,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,Retrieved from "https://en.wikipedia.org/w/index.php?title=List_of_acronyms:_B&oldid=888978318",Categories: Lists of acronymsHidden categories: Webarchive template wayback linksCS1 maint: Archived copy as titleAll articles with dead external linkss with dead external links from December 2017s with permanently dead external linkss with short description,Navigation menu,Personal tools,Not logged inContributionsCreate accountLog in,Namespaces,,,,View history, | |
| c Centi | |
| C Carbon-Coulomb-One Hundred (in Roman numerals) | |
| c2c the British rail company formerly known as LTS Rail | |
| C2C Consumer-To-Consumer electronic commerce-Cam-To-Cam internet chat | |
| ca Catalan language (ISO 639-1 code) | |
| Ca Calcium | |
| CA California (postal symbol),Canada (FIPS 10-4 country code; ISO 3166 digram),Catalonia, Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia | |
| CAA Canadian Automobile Association,(NORAD) Center for Aerospace Analysis,(U.S.) Center for Army Analysis,(U.S.) Clean Air Act,(U.S. Army) Concepts Analysis Agency,Civil Aviation Authority,Colonial Athletic Association | |
| CAAT or Campaign Against Arms Trade,Center for Alternatives to Animal Testing | |
| CAC California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier,CACM Central American Common Market | |
| CACM Communications of the ACM | |
| CAD Canadian dollar (ISO 4217 currency code), Computer-Aided Design,Computer-Aided Dispatch,Cpplint Anxiety Disorder-Condition suffered by software developers who worry about whether they've left any whitespace on the end of a line | |
| CADCAM Computer-Aided Design/Computer-Aided Manufacturing | |
| CADPAT CAnadian Disruptive PATtern | |
| CADMID Concept, Assessment, Demonstration, Manufacture, In service, Disposal (life cycle mnemonic) | |
| CAE Canadian Aviation Electronics (originally),Certificate in Advanced English | |
| CAEn (i/a) Close Action Engagement (constructive simulation) | |
| CAF Central African Republic (ISO 3166 trigram), Confederation of African Football (or French Confédération Africaine de Football) | |
| CAFAD Combined Arms For Air Defence | |
| CAFDE Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment | |
| CAFE Corporate Average Fuel Economy standard | |
| CAI Computer Assisted Instruction | |
| CAIR Council on American-Islamic Relations | |
| CALABARZON A region in the Philippines: CAvite, LAguna, BAtangas, Rizal, queZON | |
| CALL (U.S.) Center for Army Lessons Learned | |
| CALM Communications, Air-interface, Long and Medium range | |
| CalPERS California Public Employees' Retirement System | |
| Caltrans California Department of Transportation | |
| CAM Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis) | |
| CAMRA CAMpaign for Real Ale | |
| CAN Canada (ISO 3166 trigram) | |
| CANA Convulsive Antidote, Nerve Agent | |
| CANDU CANada Deuterium Uranium (nuclear reactor design) | |
| Canola Canadian oil, low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content) | |
| CAP Combat Air Patrol,Civil Air Patrol,Common [Operating/Operational] Air Picture,Crisis Action Procedures,Common Agricultural Policy (European Union) | |
| CAPES CAPability Evaluation System, Combined Arms Planning and Execution System,CARB-California Air Resources Board | |
| CARE Citizens Association for Racial Equality (former New Zealand organisation), Community database on Accidents on the Roads in Europe, Cooperative for Aid and Relief Everywhere (originally Cooperative for American Remittances to Europe) | |
| CARMONETTE Computerized Monte Carlo Simulation | |
| CARP Computed Air Release Point | |
| CART Championship Auto Racing Teams (now defunct) | |
| CAS Chemical Abstracts Service,Chief of the Air Staff,Close Air Support | |
| CASA Civil Aviation Safety Authority | |
| CASE Cellular ammunition storage equipment,Computer-Aided Software Engineering | |
| CASS Command Activated Sonobuoy System | |
| CASTFOREM Combined Arms and Support Task FORce Evaluation Model | |
| CASTOR Canadian Automatic Small Telescopes for Orbital Research | |
| cat Catalan language (ISO 639-2 code) | |
| CAT Community Acceptance Testing,Computer-Assisted (or Axial) Tomography | |
| CATK Counterattack | |
| CATS Computer Active Technology Suspension | |
| CATT (a/i) Combined Arms Tactical Trainer | |
| CAV Cavalry | |
| CAVOK Ceiling And Visibility OK ("Kav-okay") | |
| CAW Canadian Auto Workers (trade union) | |
| CB Citizens' Band radio, Cambodia (FIPS 10-4 country code) | |
| CBASSE Commission on Behavioral And Social Sciences and Education ("sea bass") | |
| CBC Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control | |
| CBE Commander of the Order of the British Empire,Cab Beside Engine (see truck) | |
| CBF Confederação Brasileira de Futebol (Portuguese, "Brazilian Football Confederation") | |
| CBGB Country, Blue Grass, and Blues (former New York City nightclub) | |
| CBLA Comparative bullet lead analysis | |
| CBN | |
| CBM many, including Canadian Baptist Ministries and Commodore Business Machines; see entry | |
| CBML Coalition Battle Management Language | |
| CBOL Consortium for the Barcode of Life | |
| CBOT Chicago Board of Trade | |
| CBR Case-Based Reasoning | |
| CBRN Chemical, Biological, Radiological, or Nuclear (weapon or event) | |
| CBRNE Chemical, Biological, Radiological, Nuclear or [high-yield] Explosive (weapon or event) | |
| CBS Columbia Broadcasting System,Corps Battle Simulation | |
| CBT Cognitive Behaviour Therapy, Combat | |
| CBUS Columbus, Ohio | |
| CC many, including carbon copy; see entry | |
| CCA Counter Command Activity | |
| CCC Canterbury Clothing Company,Civilian Conservation Corps (U.S., 1930s and 1940s),Corpus Christi College, Oxford | |
| CCCP Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik, Russian Союз Советских Социалистических Республик, Union of Soviet Socialist Republics) | |
| CCD Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism) | |
| CCF Cartoon Cartoon Fridays | |
| CCG Canadian Coast Guard,Collectible Card Game | |
| CCGC Canadian Coast Guard Cutter,Canadian Coast Guard College | |
| CCGH Canadian Coast Guard Hovercraft | |
| CCGS Canadian Coast Guard Ship,Christ Church Grammar School | |
| CCH Computer-Controlled Hostile | |
| CCIF Comité consultatif international des communications téléphoniques à grande distance (French for International Telephone Consultative Committee, merged with the CCIT in 1956 to form the CCITT) | |
| CCII Command and Control Information Infrastructure,Community Capital Investment Initiative | |
| CCIR Comité consultatif international pour la radio (French for Consultative Committee on International Radio, became the ITU Radiocommunication Sector, ITU-R, in 1992),commander's critical information requirement | |
| CCIT Comité consultatif international télégraphique (French for International Telegraph Consultative Committee, merged with the CCIF in 1956 to form the CCITT) | |
| CCITT Comité consultatif international téléphonique et télégraphique (French for International Telegraph and Telephone Consultative Committee, became the ITU Telecommunication Standardization Sector, ITU-T, in 1992) | |
| CCK Cholecystokinin, Cocos (Keeling) Islands (ISO 3166 trigram) | |
| CCM Canada Cycle & Motor Co. Ltd. (now split into two separate companies bearing the CCM name, one manufacturing bicycles and the other ice hockey equipment),Contemporary Christian music | |
| CCOC Canadian Children's Opera Chorus,Crosley Car Owners Club | |
| CCOP Coalition Common Operating/Operational Picture | |
| CCP Casualty Collection Point,Communications Checkpoint,Contingency Communications Package | |
| CCPA Consumer Credit Protection Act | |
| CCR Creedence Clearwater Revival | |
| CCRAp Canadian Conservative Reform Alliance party | |
| CCRP Command and Control Research Program | |
| CCRTS Command and Control Research and Technology Symposium | |
| CCSCS Coordinadora de Centrales Sindicales del Cono Sur | |
| CCSCS Consultative Committee for Space Data Systems | |
| CCSIL Command and Control Simulation Interface Language ("cecil") | |
| CCSK Cyclic Code Shift Keying | |
| CCT Current Commitments Team | |
| CCTT Close Combat Tactical Trainer | |
| cd Candela | |
| Cd Cadmium | |
| CD many, including Compact Disc; see entry | |
| CD1 Cluster of Differentiation 1 (a small gene family) | |
| CDA UK Centre for Defence Analysis | |
| CDC Centers for Disease Control and Prevention (originally (U.S.) Communicable Disease Center),Control Data Corporation,Cult of the Dead Cow | |
| CDD Capabilities Development Document | |
| CDE Chemical Defence Equipment | |
| CDEC U.S. Combat Development Experimentation Center | |
| CDF California Department of Forestry [and Fire Protection],Common Data Format, Democratic Republic of Congo franc congolais (ISO 4217 currency code) | |
| CDIAC Carbon Dioxide Information Analysis Center ("see-dee-ack") | |
| CDipAF Certified Diploma in Accounting and Finance | |
| CDL Commercial driver's license | |
| CDM Clean Development Mechanism (Kyoto protocol),Cold Dark Matter (astronomy) | |
| CDMA Code Division Multiple Access | |
| CDMSII Cryogenic Dark Matter Search II | |
| Cdr Commander | |
| CDS Chief of the Defence Staff,Credit default swap | |
| Cdt Commandant | |
| CDT Central Daylight Time (UTC−5 hours) | |
| ce Chechen language (ISO 639-1 code) | |
| Ce Cerium | |
| CE many, including Christian/Common Era (cf. AD); see entry | |
| CEA Campaign Effectiveness Analysis | |
| CECOM U.S. Army Communications and Electronics Command | |
| CEDEX Courrier d'entreprise à distribution exceptionnelle (French, "Company Mail with Exceptional Distribution"; "exceptional" refers to the volume of mail) | |
| CEGEP Collège d'enseignement général et professionnel (French, "College of General and Vocational Education") | |
| CEI Competitive Enterprise Institute | |
| CENTCOM United States Central Command | |
| CENTO Central Treaty Organization (Baghdad Pact) | |
| CENZUB Centre d'entraînement aux actions en zone urbaine (French, "Urban Operations Training Centre") | |
| CEO Chief Executive Officer | |
| CEP Circular Error Probable | |
| CEPT (a/i) Conférence européenne des administrations des postes et des télécommunications (French, "European Conference of Postal and Telecommunications Administrations") | |
| CERCLA U.S. Comprehensive Environmental Response, Compensation, and Liability Act of 1980 | |
| CERDEC U.S. Communications-Electronics Research, Development and Engineering Center | |
| CERGA Centre de recherches en géodynamique et astrométrie (French, "Astrometry and Geodynamics Research Centre") | |
| CERN Centre européen pour la recherche nucléaire (French, "European Organization for Nuclear Research") | |
| CERT Computer Emergency Response Team | |
| ces Czech language (ISO 639-2 code) | |
| CESS Centre for Earth Science Studies (India) | |
| CEV Combat Engineer Vehicle,Confédération européenne de volleyball (French, "European Volleyball Confederation"),Crew Exploration Vehicle | |
| CEWC (a/i) Council for Education in World Citizenship | |
| Cf Californium | |
| CF Canadian Forces, Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code) | |
| CFA Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area | |
| CFAR Christine's,Federal Acquisition Regulation | |
| CFC ChloroFluoroCarbon,Canadian Fish Company | |
| CFES Continuous Flow Electrophoresis System | |
| CFFZ Call For Fire Zone | |
| CFG Context-free grammar,Control flow graph | |
| CFHT Canada-France-Hawaii Telescope | |
| CFI Center for Inquiry (CSICOP) | |
| CFL Canadian Football League,Co-ordinated Fire Line | |
| CFLCC Coalition Forces Land Component Command | |
| CFM Certified Facilities Manager [(IFMA)]http://www.ifma.org/ | |
| CFO Chief Financial Officer | |
| CFP Call for papers,College Football Playoff,Common Fisheries Policy (EU) | |
| CFR Code of Federal Regulations,Căile Ferate Române (Romanian, "Romanian Railways") | |
| CFRP Carbon fibre reinforced plastic | |
| CFS Chronic Fatigue Syndrome | |
| CFSP Common Foreign and Security Policy | |
| CFU Colony Forming Unit in Microbiology | |
| CFV Cavalry Fighting Vehicle | |
| CFZ Critical Friendly Zone | |
| CG | |
| CGDC Computer Game Developers Conference (became GDC in 1998) | |
| CGF Computer-Generated Forces (Simulation) | |
| CGH Comparative Genomic Hybridisation | |
| CGIG Cross-Government Implementation Group | |
| CGM Computer Graphics Metafile | |
| CGO Republic of the Congo (IOC and FIFA trigram, but not ISO 3166) | |
| CGS Chief of the General Staff | |
| CGSI Consumer Guidance Society of India | |
| CGT Capital Gains Tax | |
| ch Chamorro language (ISO 639-1 code) | |
| ch ch(L) is used to denote the Chern character of a line bundle | |
| CH Chieftain tank-China (FIPS 10-4 country code)-Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica) | |
| cha Chamorro language (ISO 639-2 code) | |
| CHAMPUS (U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE) | |
| CHAOS Cambridge Heart Anti-Oxidant Study | |
| CHAPS Clearing House Automated Payment System | |
| CHDK Canon Hack Development Kit (Canon camera firmware hack) | |
| che Chechen language (ISO 639-2 code) | |
| CHE Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica) | |
| CHF Swiss franc (ISO 4217 currency code) | |
| CHI Columbia Helicopters, Inc | |
| CHI Computer-Human Interaction | |
| CHiP California Highway Patrol | |
| CHIPS Cosmic Hot Interstellar Plasma Spectrometer | |
| CHL Chile (ISO 3166 trigram) | |
| CHLA Core Historical Literature of Agriculture | |
| CHN China (ISO 3166 trigram) | |
| CHOGM Commonwealth Heads of Government Meeting | |
| CHP California Highway Patrol-Combined Heat and Power | |
| CHPSO California Hospital Patient Safety Organization | |
| CHS Combat Health Support | |
| CHT Certified Hand Therapist | |
| chu Old Church Slavonic language (ISO 639-2 code) | |
| chv Chuvash language (ISO 639-2 code) | |
| CREN Christian Real Estate Network Real Estate Association | |
| Ci Curie | |
| CI Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram), Counter-Intelligence,101 (in Roman numerals) | |
| CIA Cairo International Airport,Central Intelligence Agency,Culinary Institute of America | |
| CIAO Critical Infrastructure Assurance Office,Component-Integrated ACE ORB | |
| CIB Complete In Box (Internet auction/trading listings) | |
| CIBC Canadian Imperial Bank of Commerce | |
| CICS Customer Information Control System (IBM mainframe software; "kicks" or "C-I-C-S") | |
| CID Combat Identification, Criminal Investigation Division,Criminal Investigations Department | |
| CID Certified Interior Designer-A Certified Interior Designer (CID) licensed in New York (USA) plans, designs, supervises and/or consults on various aspects of interior spaces. | |
| CIEF Comité international d'enregistrement des fréquences (International Frequency Registration Board) | |
| CIF Cost, Insurance, and Freight (Paid) (shipping) | |
| CIMIC Civil-Military Co-operation | |
| CIMMYT (a/i) Centro Internacional de Mejoramiento de Maíz Y Trigo (Spanish, "International Maize and Wheat Improvement Center") | |
| CINC Commander in Chief | |
| CINEOS Campo Imperatore Near-Earth Object Survey | |
| CIO Chief information officer,Congress of Industrial Organizations | |
| CIP Combat Identification Panel | |
| CIPE (European) Centre for International Political Economy | |
| CIR (Commander's) Critical Information Requirements | |
| CIR Corotating Interaction Region | |
| CIS Canadian Interuniversity Sport, a former name of the organization now known as U Sports,Commonwealth of Independent States,Command and Information System,Communication and Information System | |
| CISA (U.S.) C4I Integration Support Activity | |
| CISB Complete In Sealed Box (Internet auction/trading listings) | |
| CISPR Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference) | |
| CISSP Certified Information Systems Security Professional | |
| CITES Convention on International Trade in Endangered Species (of Wild Fauna and Flora) ("sigh-tease") | |
| CITS Combat Identification Training System | |
| CIV Côte d'Ivoire (ISO 3166 trigram) | |
| CIVETS Colombia, Indonesia, Vietnam, Egypt, Turkey, South Africa (economics) | |
| CIVPOP Civilian Population | |
| CIWS Close-In Weapon System | |
| CHRS Canadian Heart Rhythm Society | |
| CJ Cayman Islands (FIPS 10-4 country code)-Criminal Justice | |
| CJC Canadian Jewish Congress-Cold Junction Compensation | |
| CJD Chronological Julian Day-Creutzfeldt-Jakob disease | |
| CJCS Chairman of the Joint Chiefs of Staff | |
| CJO Chief of Joint Operations | |
| CJTF Combined Joint Task Force | |
| CK Cocos (Keeling) Islands (FIPS 10-4 country code)-Cook Islands (ISO 3166 digram) | |
| CKA commonly known as, Canada Kicks Ass | |
| CKND Codename: Kids Next Door | |
| Cl Chlorine | |
| CL Chile (ISO 3166 digram)-Co-ordination Line-One Hundred and Fifty (in Roman numerals) | |
| CLA Clutterers Anonymous | |
| CLEC Competitive Local Exchange Carrier | |
| CLEMARS California Law Enforcement Mutual Aid Radio System | |
| CLI Command Line Interface/Interpreter | |
| CLIC Compact LInear Collider | |
| CLO Cornell Lab of Ornithology | |
| CLOB Character Large OBject | |
| CLOS Command to Line-Of-Sight (missile control system) | |
| CLOS Common Lisp Object System | |
| CLP Chilean peso (ISO 4217 currency code)-Common [Operating/Operational] Land Picture | |
| CLPFC CentroLateral PreFrontal Cortex | |
| CLRP College Loan Repayment Program | |
| Cm Curium | |
| CM Cameroon (FIPS 10-4 country code; ISO 3166 digram), Cruise Missile, Nine Hundred (in Roman numerals) | |
| CMA U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous | |
| CMB Cosmic Microwave Background | |
| CMBR Cosmic Microwave Background Radiation | |
| CME Coronal Mass Ejection (usually Sun) | |
| CMHC Canada Mortgage and Housing Corporation | |
| CMIIAW Correct me if I am wrong | |
| CMIS Content Management Interoperability Services,Common management information service | |
| CMJ Christopher Martin-Jenkins (BBC sports commentator) | |
| CML Chemical, Chronic Myelogenous Leukemia (formerly Chronic Myeloid Leukemia) | |
| CMLL Consejo Mundial de Lucha Libre (Spanish, "Worldwide Wrestling Council"—Mexican professional wrestling promotion) | |
| CMM Capability Maturity Model | |
| CMMC Corps Materiel Management Centre | |
| CMML Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language | |
| CMO Civil-Military Operations | |
| CMOC Civil-Military Operations Centre | |
| CMOS Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor | |
| CMP Common [Operating/Operational] Maritime Picture | |
| CMP Canadian Military Pattern truck (World War II) | |
| CMPD Chronic Myeloproliferative Disease, Charlotte-Mecklenburg Police Department, Costa Mesa Police Department | |
| CMR Cameroon (ISO 3166 trigram), Coaxial Main Rotors (helicopter type) | |
| CMS Centers for Medicare and Medicaid Services,The Chicago Manual of Style | |
| CMT Country Music Television | |
| CMU Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit | |
| CMW Marconi's Wireless Telegraph Company of Canada,Canadian Manufacturing Week,Canadian Music Week,Catherine McAuley Westmead (school in New South Wales, Australia),Chicago, Missouri and Western (Railway),Compartmented Mode Workstation,Compton's Most Wanted,Continuous Microwave (processing technology),Custom Maintenance Wizard (Microsoft Office Resource Kit) | |
| CMYK Cyan Magenta Yellow Key/blacK (colour model) | |
| CN (i/s) Canadian National (railway; also the AAR reporting mark for said company), China (ISO 3166 digram),Comoros (FIPS 10-4 country code) | |
| CNA Center for Naval Analyses,Certified Network Administrator,Computer Network Attack,Continental (Casualty Company), National (Fire Insurance Company), and American (Casualty Company), the three companies that merged to form what is now known as CNA Financial | |
| CNBC (a/i) Consumer News and Business Channel | |
| CND Campaign for Nuclear Disarmament,Computer Network Defence | |
| CNE Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer | |
| CNF Cost and Freight | |
| CNI Communications, Navigation and Identification | |
| CNI Clinical Nursing Intern | |
| CNN Cable News Network,Cellular Nonlinear Network | |
| CNO Computer Network Operations | |
| CNR Canadian National Railway,Combat Net Radio | |
| CNV Copy-Number Variable (genetics) | |
| CNY Chinese yuan renminbi (ISO 4217 currency code) | |
| co Corsican language (ISO 639-1 code) | |
| Co Cobalt | |
| CO many, including Central Office (phone company); see entry-Colorado (postal symbol)-Commanding Officer (military) | |
| COA Certificate/Concept Of Analysis-Course Of Action (military) | |
| COB Close Of Business [day] | |
| COBRA Consolidated Omnibus Budget Reconciliation Act of 1985 | |
| COCOM Combatant Command (military) | |
| COD Cash On Delivery-Democratic Republic of the Congo (ISO 3166 trigram) | |
| CoDA Co-Dependents Anonymous | |
| codec Coder-Decoder / Compressor-Decompressor / Compression-Decompression algorithm | |
| COE Cab Over Engine (see truck)-Common Operating Environment (military) | |
| COEA Cost Operational Effectiveness Analysis (military) | |
| COEIA Combined Operational Effectiveness and Investment Appraisal (military) | |
| COFT Conduct Of Fire Trainer (military) | |
| COG Centre Of Gravity-Current Operations Group (military)-Republic of the Congo (ISO 3166 trigram) | |
| COGENT Cognitive Objects within a Graphical EnviroNmenT | |
| COIL Chemical Oxygen Iodine Laser | |
| COIN Counter-Insurgency (military) | |
| COK Cook Islands (ISO 3166 trigram) | |
| COL Colombia (ISO 3166 trigram) | |
| COLA comp.os.linux.announce-Cost Of Living Adjustment | |
| COLT Combat Observation and Lasing Team (military) | |
| COM Comoros (ISO 3166 trigram)-Component Object Model | |
| COMECON Council for Mutual Economic Assistance (economic counterpart of the Warsaw Pact, 1949-1991) | |
| COMMZ Communications Zone (military) | |
| COMSEC Communications Security (military) | |
| CONAD U.S. Continental Air Defense Command | |
| CONCACAF Confederation Of North, Central American and Caribbean Association Football | |
| CONMEBOL Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for "South American Football Confederation") | |
| CONOPS Concept of Operations (military) | |
| CONUS Continental United States | |
| COO Chief Operating Officer | |
| COP Colombian peso (ISO 4217 currency code)-Common Operating/Operational Picture | |
| COPD Chronic obstructive pulmonary disease | |
| COPE U.K. Committee On Publication Ethics | |
| COPUS U.K. Committee on the Public Understanding of Science | |
| cor Cornish language (ISO 639-2 code) | |
| CORBA Common Object Request Broker Architecture | |
| CORD (i/a) Common Operational Requirements Document | |
| CORE Consortium for Oceanographic Research and Education | |
| CORG (U.S.) Combat Operations Research Group | |
| COROT COnvection, ROtation and planetary Transits | |
| cos Corsican language (ISO 639-2 code)-Cosine | |
| COS Cooper Ornithological Society | |
| COSCOM Corps Support Command (military) | |
| COSER COoperative SERvice | |
| COSHH Control Of Substances Hazardous to Health (United Kingdom) | |
| CoT Car of Tomorrow (former NASCAR race car design) | |
| COTS Commercial Off The Shelf | |
| Coy Company (military unit)Cow | |
| CP Canadian Pacific-Check Point-Command Post-Club Penguin | |
| CPA Certified Public Accountant | |
| CPAC Conservative Political Action Conference-Cable Public Affairs Channel ("see-pack") | |
| CPAP Center for Public Administration and Policy-Coalition for the Prevention of Alcohol Problems-Consecutive primes in arithmetic progression-Continuous positive airway pressure | |
| CPC Certified Professional Coder, a certification from AAPC | |
| CPCU Certified Property Casualty Underwriter | |
| CPD Capabilities Production Document | |
| CPE Certificate of Proficiency in English | |
| CPE Certified Professional Ergonomist | |
| CPF Calibration Parameter File-Canadian Patrol Frigate | |
| CPG Clinical Practice Guideline | |
| CPI CERDEC Command, Power and Integration | |
| CPIM Certification on Production and Inventory Management | |
| CPIR Computationally-Private Information Retrieval | |
| CPON Certified Pediatric Oncology Nurse | |
| CPPCC Chinese People's Political Consultative Conference | |
| CPR Canadian Pacific Railway | |
| CPR Cardiopulmonary resuscitation | |
| CPSM Continuous Phase Shift Modulation | |
| CPSU Communist Party of the Soviet Union | |
| CPT Contingency Planning Team | |
| CPU Central Processing Unit-Contract Postal Unit | |
| CPV Cape Verde (ISO 3166 trigram) | |
| CPX Command Post eXercise | |
| CQ Carrier Qualification-Central Queensland- | |
| CQD Close Quarters Drill (Morse distress code preceding SOS: CQ "calling all stations", D "Distress"; often incorrectly interpreted as "Come Quick, Distress") | |
| cr Cree language (ISO 639-1 code) | |
| Cr Chromium | |
| CR Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram) | |
| CRAM Combined Radiometric Correction Model | |
| CRC Central RTI Component,Chemical Rubber Company,Christian Reformed Church,Control and Reporting Centre,Cyclic Redundancy Check, Costa Rican colón (ISO 4217 currency code),Costa Rica (IOC and FIFA trigram, but not ISO 3166) | |
| CRD Capstone Requirements Document | |
| cre Cree language (ISO 639-2 code) | |
| CREB Cyclic AMP-response Element Binding (protein) | |
| CREEP Committee for the Re-Election of the President, a pejorative nickname used by opponents | |
| CRI China Radio International, Costa Rica (ISO 3166 trigram) | |
| CRIPL Consolidated Remain-In-Place List | |
| CRM Cardiac Rhythm Management-Customer Relationship Management | |
| CRO Croatia (IOC and FIFA trigram, but not ISO 3166) | |
| CRP Committee for the Re-Election of the President,Control and Reporting Post | |
| CRT Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem | |
| CRTC Canadian Radio-television and Telecommunications Commission | |
| cs Czech language (ISO 639-1 code) | |
| Cs Caesium | |
| CS Combat Support,Computer Scientist, Costa Rica (FIPS 10-4 country code),Serbia and Montenegro (ISO 3166 digram; obsolete since 2006) | |
| CSA Canadian Soccer Association,Canadian Space Agency,Canadian Standards Association,Child Support Agency,Command Staff Advisor,Community-supported agriculture,Confederate States of America,Corps Storage Area, Czech Airlines,C/S/A-CINC, Service, and Agency | |
| CSAR Combat Search and Rescue ("seessar") | |
| CSC Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation (became DXC Technology in 2017),Computer Security Centre,CSCC Canadian Society of Clinical Chemists | |
| CSEAL (i/a) Combat Systems Engineering and Analysis Laboratory ("see-seal") | |
| CSERIAC (U.S. DoD) Crew Systems Ergonomics Information Analysis Center | |
| CSG Corps Support Group | |
| CSI see entry | |
| CSICOP Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006) | |
| CSIP Commercial Stable Image Platform (AMD) | |
| CSIS Canadian Security Intelligence Service ("seessiss"), (U.S.) Center for Strategic & International Studies | |
| CSK Czechoslovakia (ISO 3166 trigram; obsolete since 1993) | |
| CSL U.K. Central Science Laboratory | |
| CSM see entry | |
| CSPI Center for Science in the Public Interest | |
| CSR Control Supply Rate | |
| CSR Corporate Social Responsibility [1] | |
| CSRC Conflict Studies Research Centre | |
| CSRF Cross-Site Request Forgery | |
| CSS Cascading Style Sheets,Catalina Sky Survey,Central Security Service,Combat Service Support,Confederate States Ship,Content-scrambling system,Cross-site scripting | |
| CSSCS Combat Service Support Control System | |
| CST Central Standard Time (UTC−6 hours) | |
| CT Computed tomography (medical scan also known as a CAT scan)-Central Time zone-Chrono Trigger (Computer/Video games)-Connecticut (postal symbol)-Canterbury (postal symbol)-Chhattisgarh (Indian state code) | |
| CTA Central African Republic (FIFA trigram, but not ISO 3166 or IOC), Chicago Transit Authority, Comando-Geral de Tecnologia Aerospacial (Portuguese, [Brazilian] "General Command for Aerospace Technology") | |
| CTBT Comprehensive [Nuclear] Test Ban Treaty | |
| CTC Closed Timelike Curve (relativity)-(U.S.) Combat Training Center | |
| CTDB Compact Terrain Data Base (file format) | |
| CTE Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984), Chronic traumatic encephalopathy | |
| CTGF connective tissue growth factor | |
| CTI Co-operative Target Identification | |
| CTIL Critical Tracked Items List | |
| CTIS Central Tire Inflation System | |
| CTMS Clinical Trial Management System | |
| CTO Chief Technical Officer-Chief Technology Officer | |
| CTS Clear-To-Send-Collective Training Standards- | |
| CTSS Compatible Time-Sharing System | |
| CTU Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24) | |
| CTVT Canine Transmissible Venereal Tumour | |
| cu Old Church Slavonic language (ISO 639-1 code) | |
| Cu Copper (Latin Cuprum) | |
| CU Carrie Underwood-Cuba (FIPS 10-4 country code; ISO 3166 digram) | |
| CUB Cuba (ISO 3166 trigram) | |
| CUCV Commercial Utility Cargo Vehicle | |
| CUNY City University of New York ("CUE-knee") | |
| CUP Cuban peso (ISO 4217 currency code) | |
| CUPE Canadian Union of Public Employees ("CUE-pee") | |
| CUPS Common Unix Printing System | |
| CUPW Canadian Union of Postal Workers | |
| CUREA Consortium for Undergraduate Research and Education in Astronomy | |
| CuW Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements) | |
| CUW Curaçao (ISO 3166 trigram) | |
| cv Chuvash language (ISO 639-1 code) | |
| CV many, including curriculum vitae (résumé); see entry | |
| CVCC Combat Vehicle Command and Control,Compound Vortex Controlled Combustion (1970s Honda automobile engine technology) | |
| CVE Cape Verde escudo (ISO 4217 currency code) | |
| CVI Combat Vehicle Identification | |
| CVLL Crypto Variable Logic Label | |
| CVR Cockpit Voice Recorder-Combat Vehicle Reconnaissance | |
| CVS Concurrent Versions System | |
| CVSD Continuous Variable Slope Delta (modulation) | |
| CVT Continuously Variable Transmission | |
| CW Continuous Wave-Clothes Washer-Cook Islands (FIPS 10-4 territory code) | |
| CWC Chemical Weapons Convention | |
| CWS Canadian Wildlife Service | |
| CWRU Case Western Reserve University | |
| CX Christmas Island (ISO 3166 digram)-One Hundred and Ten (in Roman numerals) | |
| CXR Christmas Island (ISO 3166 trigram) | |
| cy Welsh language (ISO 639-1 code) | |
| CY Calendar year-Cyprus (ISO 3166 and FIPS 10-4 country code digram) | |
| cym Welsh language (ISO 639-2 code) | |
| CYM Cayman Islands (ISO 3166 trigram) | |
| CYP Cyprus (ISO 3166 trigram)-Cyprus pound (ISO 4217 currency code) | |
| CZ combat zone, Czech Republic (ISO 3166 and FIPS 10-4 country code digram) | |
| CZE Czech Republic (ISO 3166 trigram) | |
| CZK Czech koruna (ISO 4217 currency code) | |
| CZF constructive Zermelo-Fraenkel | |
| CZMA (US) Coastal Zone Management Act | |
| CZW Combat Zone Wrestling | |
| d Deci | |
| D Deuterium | |
| da Danish language (ISO 639-1 code)-deca | |
| DA | |
| DAB Digital Audio Broadcasting | |
| DACT Data Automated Communications Terminal-Dissimilar Air Combat Training | |
| DADVSI Loi sur le droit d’auteur et les droits voisins dans la société de l’information (French, "Law on copyrights and related rights in the information society") | |
| DAES Defence Acquisition Executive Summary-(UK MoD) Directorate of Analysis, Experimentation and Simulation | |
| DAF Dissolved Air Flotation, a technique used in water treatment | |
| DAFIF Digital Aeronautical Flight Information File | |
| DAK Disney's Animal Kingdom | |
| dan Danish language (ISO 639-2 code) | |
| DAO Division Ammunition Officer | |
| DAQ Data acquisition-Delivered Audio Quality | |
| DARE Drug Abuse Resistance Education | |
| DARO (i/a) (U.S.) Defense Airborne Reconnaissance Office | |
| DARPA U.S. Defense Advanced Research Projects Agency | |
| DART Disaster Assistance Response Team-Dublin Area Rapid Transit | |
| DAS Defensive Aids Suite | |
| DASD (U.S.) Deputy Assistant Secretary of Defense | |
| DASL Datapoint's Advanced Systems Language | |
| DAU (U.S.) Defense Acquisition University | |
| DAWN (U.S.) Drug Abuse Warning Network | |
| dB Decibel | |
| Db Dubnium | |
| DB Database-Deutsche Bahn | |
| DBA De Bellis Antiquitatis (miniature wargaming rules) | |
| DBBL (U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory | |
| DBCS Double Byte Character Set | |
| DBDO Desert BDO | |
| DBE Dame Commander of the Order of the British Empire | |
| DBF Detection By Fire (weapon launch signature) | |
| DBM De Bellis Multitudinis (miniature wargaming rules)-Detection By Movement (military target) | |
| DBR De Bellis Renationis (miniature wargaming rules) | |
| DBRA Davis-Bacon Related Acts | |
| DBS Direct Broadcast Services (television) | |
| DC da capo,Italian Democrazia Cristiana,Digital Compass,Direct Current, District of Columbia (postal symbol), Douglas Aircraft Company,Dublin Core,Duty Cycle,Disconnected | |
| DCA Defensive Counter Air,Drum Corps Associates, DiChloroAcetate, Ronald Reagan Washington National Airport (IATA code) | |
| DCAA (U.S.) Defense Contract Audit Agency | |
| DCAS Devon and Cornwall Archery Society | |
| DCC Dallas Christian College,Digital Command Control (model railroading),Direct Client-to-Client (Internet Relay Chat),Dismounted Close Combat | |
| DCCP Datagram Congestion Control Protocol | |
| DCD [Organ] Donation after Cardiac Death | |
| DCDC Development, Concepts and Doctrine Centre | |
| DCE Data Communication Equipment | |
| DCFC Death Cab for Cutie | |
| DCI Detection, Classification and Identification,Drum Corps International,Duellists' Convocation International, now known simply by the initials | |
| DCIM Digital Camera Images | |
| DCIMS Dental Classification Information Management System,Dismounted Combat Identification Marking System | |
| DCL Disney Cruise Line | |
| DCN Deacon | |
| DCOM Disney Channel Original Movie | |
| DCOP Desktop Communication Protocol | |
| DCSOPS Deputy Chief of Staff for Operations and plans | |
| DCW Digital Chart of the World | |
| DCYSC Discovery Channel Young Scientist Challenge | |
| DD many, including due diligence and dear daughter (increasingly prevalent on social mailing lists, blogs, and bulletin boards); see entry | |
| DDA Digital Differential Analyzer (graphics algorithm),Digital Differential Analyzer,Deputy District Attorney | |
| DDD Data Display Debugger,Digital Digital Digital (CD mastering) | |
| DDL Digital Data Link | |
| DDN U.S. Defense Data Network | |
| DDoS Distributed Denial of Service | |
| DDP Danish Design Prize,Deutsche Demokratische Partei (German, "German Democratic Party"-former political party in Weimar Germany),Diamond Dallas Page (American professional wrestler) | |
| DDR Dance Dance Revolution,Deutsche Demokratische Republik (German, "German Democratic Republic" (GDR), East Germany),Double Data Rate, East Germany (ISO 3166 trigram, obsolete since 1990),DDR&E-(U.S.) Defense Department Research and Engineering | |
| DDS Doctor of Dental Surgery | |
| DDT Dichloro-Diphenyl-Trichloroethane (insecticide),Dynamic Debugging Tool (computing),DE[edit] | |
| de German language (ISO 639-1 code) | |
| DE Delaware (postal symbol)-Germany (ISO 3166 digram) | |
| DEA Drug Enforcement Administration | |
| DEA Drug Enforcement Agency | |
| DEC (a/i) Department of Environmental Conservation-Digital Equipment Corporation-Disasters Emergency Committee | |
| DeCA (U.S.) Defense Commissary Agency | |
| DECSIM Model DEComposition and SIMulation algorithm-Directed Energy Combat SIMulation | |
| DECT Digital European Cordless Telephone | |
| DEFCON Defence readiness condition | |
| DEFRA (UK) Department for Environment, Food and Rural Affairs | |
| DELT Dual Ended Line Test (ing) | |
| DEM Data Exchange Mechanism-Digital Elevation Model | |
| DEN Denmark (IOC and FIFA trigram, but not ISO 3166) | |
| DEPSECDEF (U.S.) Deputy Secretary of Defense | |
| DERA British Defence Evaluation and Research Agency (1995-2001) | |
| DES Deep Ecliptic Survey | |
| deu German language (ISO 639-2 code) | |
| DEU Germany (ISO 3166 trigram) | |
| DF Direct Fire,Direction Finding,Distrito Federal (Spanish and Portuguese for "federal district") | |
| DFAD Digital Feature Analysis Data ("dee-fad") | |
| DFAS (U.S.) Defense Finance and Accounting Service | |
| DFB Deutscher Fußball-Bund (German for "German Football Association") | |
| DFCB Data Format Control Book | |
| DfID UK Department for International Development | |
| DFL Democratic-Farmer-Labor (the full designation of the Minnesota affiliate of the U.S. Democratic Party),Deutsche Fußball Liga (German for "German Football League"), the operator of the top two leagues of German football | |
| DFM Dynamic Flowgraph Methodology | |
| DFM (ii) Discrete Field Model | |
| DFSP Dermatofibrosarcoma protuberans | |
| DFTBA Don't Forget To Be Awesome-a term commonly used by the Vlogbrothers | |
| DG Dei gratia (Latin, "by the grace of God")-Director-General-Data General | |
| DGA Direction générale des armées (French "Armed Forces General Directorate") | |
| DGAF (I) Don't give a f*** | |
| DGPS Differential GPS | |
| DGZ Desired Ground Zero | |
| DH dear husband (increasingly prevalent on social mailing lists, blogs, and bulletin boards)-Designated hitter | |
| DHA DocosaHexaenoic Acid | |
| DHHS (U.S.) Department of Health and Human Services | |
| DHL Dalsey, Hillblom, and Lynn (courier service) | |
| DHRA (U.S.) DoD Human Resources Activity | |
| DHS U.S. Department of Homeland Security | |
| DHSS UK Department of Health and Social Security | |
| DHTFYSS U.S. Don't Have Time For You Silly S**** | |
| DHY Dahomey (ISO 3166 trigram; became BEN for Benin in 1977) | |
| DIA U.S. Defense Intelligence Agency | |
| DIAC | |
| DiC | |
| DICASS DIrectional Command Activated Sonobuoy System | |
| DID Dissociative identity disorder | |
| DILLIGAD Do I Look Like I Give A Damn? (military shorthand, slightly less offensive than the following) [2] | |
| DILLIGAF Do I Look Like I Give A Fuck? (military shorthand; the theme of biography, album, tour, and other products of Kevin Bloody Wilson) [3] | |
| DIF Data Interchange Format | |
| DIFAR DIrectional Frequency Analysis and Recording | |
| DIME Dense Inert Metal Explosive | |
| DIMM Dual In-line Memory Module (computing) | |
| DIN Deutsches Institut für Normung (German, "German Institute for Standardization"),Drug Identification Number (Canadian drug marketing requirement) | |
| DINA (p/a) Diesel Nacional (Spanish, "National Diesel"—Mexican bus and truck manufacturer now known as DINA),Dirección de Inteligencia Nacional (Spanish, "National Intelligence Directorate"—former secret police of Chile) | |
| DINKY Double Income, No Kids Yet | |
| DIP Dual In-line Package (electronics) | |
| DIPS Defense independent pitching statistics | |
| DIR Defence Industrial Research | |
| DIS Defence Intelligence Staff,(U.S.) Defense Investigative Service,Distributed Interactive Simulation,Draft International Standard (ISO) | |
| DISA U.S. Defense Information Systems Agency,Distinguished Individual Service Award | |
| DISCOM Division Support Command | |
| DISE Deployable Intelligence Support Element | |
| DISSTAF DIS Search and Target Acquisition Fidelity experiment | |
| DITY (i/a) Do-It-Yourself | |
| div Dhivehi language (ISO 639-2 code) | |
| DIVAD Division Air Defence | |
| DIY Do It Yourself | |
| DJ Disc Jockey-Dinner Jacket-Djibouti (ISO 3166 digram; FIPS 10-4 country code) | |
| DJD Degenerative Joint Disease-Dublin Julian Day-Discoveries in the Judaean Desert | |
| DJF Djibouti franc (ISO 4217 currency code) | |
| DJI Djibouti (ISO 3166 trigram) | |
| DJS Director, Joint Staff | |
| DK Denmark (ISO 3166 digram) | |
| DKK Danish krone (ISO 4217 currency code) | |
| DL Dexter's Laboratory | |
| DLA U.S. Defense Logistics Agency-Dental Laboratories Association | |
| DLIC Detachment Left-In-Contact | |
| DLIR Depot-Level Inspection and Repair | |
| DLL Dynamic Link Library | |
| DLPMC DorsoLateral PreMotor Cortex | |
| DLR Deutsches Zentrum für Luft-und Raumfahrt (German, German Aerospace Centre)-Docklands Light Railway | |
| DLRP Data Link Reference Point | |
| DLS Deep Lens Survey | |
| DLSA (U.S.) Defense Legal Services Agency | |
| DLSc Diploma in Library Science | |
| DLSC U.S. Defense Logistics Services Center-U.S. Defense Logistics Support Command- | |
| DLTBGYD Don't let the bastards grind you down | |
| DM Dominica (ISO 3166 digram), Dungeon Master (role-playing games) | |
| DMA Designated market area (primarily a U.S. term),U.S. Defense Mapping Agency (became NIMA, then NGA),Direct Memory Access (computing), Dominica (ISO 3166 trigram) | |
| DMC (U.S.) Defense Management Council | |
| DMCA Digital Millennium Copyright Act | |
| DMD dentariae medicinae doctor (Latin, "doctor of dental medicine"),Digital Micromirror Device,Digital Multilayer Disk | |
| DMI Desktop Management Interface (computing) | |
| DMM Digital Multimeter | |
| DMOC Distributed Mission Operations Centre | |
| DMOS (i/a) Double Diffused MOS transistor ("dee-moss") | |
| DMPA (U.S.) Defense Medical Programs Activity | |
| DMPFC DorsoMedial PreFrontal Cortex | |
| DMPK Drug Metabolism and Pharmacokinetics | |
| DMRB Design Manual for Roads and Bridges | |
| DMS U.S. Defense Message System | |
| DMSO Dimethyl sulfoxide, U.S. Defense Modeling & Simulation Office ("dim-so"), now Modeling and Simulation Coordination Office | |
| DMSP U.S. Defense Meteorological Satellite Program | |
| DMT Dimethyltryptamine | |
| DMU Diesel Multiple Unit, a method of connecting self-propelled railway vehicles together to form a train under the control of one driver. | |
| DMV Department of Motor Vehicles | |
| DMZ DeMilitarized Zone | |
| DN Deacon | |
| DNA U.S. Defense Nuclear Agency,Deoxyribonucleic acid,Douglas Noël Adams | |
| DNAW Day Night All Weather | |
| DND Department of National Defence (Canada)-Do not disturb | |
| DNDi Drugs for Neglected Diseases initiative | |
| DNDO U.S. Domestic Nuclear Detection Office | |
| DNM Defence Nuclear Material | |
| DNK Denmark (ISO 3166 trigram) | |
| DNR Do not resuscitate | |
| DNS Domain name system | |
| DO Dominica (FIPS 10-4 country code)-Dominican Republic (ISO 3166 digram)-Doctor of Osteopathic Medicine | |
| DOA Dead On Arrival-Dead or Alive | |
| DOB Date Of Birth | |
| DoCRA Duty of Care Risk Analysis Standard | |
| DOD U.S. Department of Defense | |
| DODAF U.S. Department of Defense Architectural Framework | |
| DoDD U.S. Department of Defense Directive | |
| DoDEA (U.S.) Department of Defense Education Activity | |
| DOE (i/a) U.S. Department of Energy | |
| DOHC Dual-OverHead-Cam engine | |
| DOI Digital Object Identifier-U.S. Department of the Interior | |
| DOM Deo optimo maximo (Latin, "to God, the best and greatest")-Document Object Model-Dominican Republic (ISO 3166 trigram) | |
| DOMS (U.S.) Director of Military Support | |
| DOP Dominican peso (ISO 4217 currency code) | |
| DORA Defence of the Realm Act | |
| DOS Denial of Service (DoS, cf. DDoS)-Density of State-Disk Operating System | |
| DOT Department of Transportation (U.S. federal or state)-Damage Over Time (common in World of Warcraft) | |
| DOTA short-form for DEFENSE OF THE ANCIENTS a popular online epic game | |
| DotD Deal of the Day (marketing gimmick) | |
| DOTMLPF Doctrine, Organization, Training, Materiel, Leadership, Personnel, and Facilities (mnemonic) | |
| DOW Died of Wounds | |
| DP Division de production (Algerian petroleum company) | |
| DP Decision Point-Dynamic Programming | |
| DPA UK Defence Procurement Agency | |
| DPCO Double-Pole Change Over | |
| DPDT Double-Pole Double-Throw | |
| DPICM Dual-Purpose Improved Conventional Munition | |
| DPKO UN Department for Peacekeeping Operations | |
| DPMO (U.S.) Defense Prisoner of War/Missing Personnel Office | |
| DPPDB Digital Point Positioning Database | |
| DPRE Displaced Person or Refugee (plural Displaced Persons and Refugees) (originally Displaced Persons, Refugees, Evacuees) | |
| DPRK Democratic People's Republic of Korea | |
| DPST Double-Pole Single-Throw | |
| DQ Dairy Queen-Jarvis Island (FIPS 10-4 country code) | |
| DR Dead Reckoning-Dominican Republic (FIPS 10-4 country code)-Danmarks Radio (Danish Broadcasting Corporation) | |
| DRA Defence Research Agency (UK, 1991-1995)-Democratic Republic of America | |
| DRAGN Double Radio source Active Galactic Nucleus ("dragon") | |
| DRAM Dynamic Random Access Memory ("dee-ram") (computing) | |
| DRC Democratic Republic of the Congo | |
| DRDC Defence Research & Development Canada | |
| DREA (i/a) Defence Research Establishment Atlantic (obsolete 2002) | |
| DRES (i/a) Defence Research Establishment Suffield (obsolete 2002) | |
| DRET (i/a) Defence Research Establishment Toronto (obsolete 2002) | |
| DREV (i/a) Defence Research Establishment Valcartier (obsolete 2002) | |
| DRI Detection, Recognition, Identification-Dietary Reference Intake | |
| DRIC (i/a) (U.S.) Defense Research Information Center | |
| DRL Daytime Running Lights-Dorman Roberts Ltd. | |
| DRM Digital Rights Management | |
| DRMS (U.S.) Defense Revitalization and Marketing Service | |
| DRPR Drawing Practices | |
| DRT Document Related Technologies | |
| Ds Darmstadtium | |
| DS Dear son (increasingly prevalent on social mailing lists, blogs, and bulletin boards),Defence Scientist,Direct Support, Dust Storm (METAR Code) | |
| DSA (U.S.) Defense Support Activities,Division Support Area | |
| DSAA (U.S.) Defense Security Assistance Agency,Driving Schools Association of the Americas,DECT Standard Authentication Algorithm | |
| DSAS Disney Sing Along Songs | |
| DSB (U.S.) Defense Science Board | |
| DSC Differential Scanning Calorimeter,Digital Selective Calling,Digital Still Camera,Distinguished Service Cross,Doctor of Surgical Chiropody (obsolete),Document structure convention (PostScript programming),Dynamic Stability Control | |
| DSCS U.S. Defense Satellite Communications System | |
| DSCSOC DSCS Operations Center | |
| DSD Defence Studies Department (King's College, London) | |
| DSDS Deutschland sucht den Superstar (German, "Germany Seeks the Superstar"), the German version of the Idol series | |
| DSE -Dry Sheep Equivalent | |
| DSG Direct-Shift Gearbox | |
| DSID Dismounted Soldier Identification System | |
| DSL Digital Subscriber Line | |
| DSLR Digital single-lens reflex (camera) | |
| DSM Diagnostic and Statistical Manual of Mental Disorders | |
| DSN Deep Space Network | |
| DSO Distinguished Service Order (British military decoration) | |
| dsp decessit sine prole (Latin, "died without issue")-genealogy short-hand | |
| dspl decessit sine prole legitima (Latin, "died without legitimate issue") | |
| dspm decessit sine prole mascula [superstite] (Latin, "died without surviving male issue" ) | |
| dspml decessit sine prole mascula legitima (Latin, "died without legitimate male issue") | |
| dspms decessit sine prole mascula superstite (Latin, "died without surviving male issue") | |
| dsps Decessit sine prole superstite (Latin, "died without surviving issue") | |
| DSP Defense Standardization Program,Defense Support Program,Digital Signal Processing | |
| DSPL Design Specialists and Plans Language | |
| DSR Deformed Special Relativity | |
| DSRV Deaf Sports Recreation Victoria,Deep Submergence Rescue Vehicle | |
| DSS Digitized Sky Survey,Discarding-Sabot Shell (ammunition) | |
| DST | |
| DSTL British Defence Science and Technology Laboratory | |
| dsvp d.s.v.p. decessit sine vitae patria (Latin, "died within fathers lifetime") | |
| DSWA (U.S.) Defense Special Weapons Agency | |
| DTA Dental Technologists Association | |
| DTD Digital Terrain Data | |
| DTE Data Terminal Equipment-Down To Earth | |
| DTED Digital Terrain Elevation Data ("dee-ted") | |
| DTG Date-Time Group | |
| DTH Direct To Home (television) | |
| DTI UK Department of Trade and Industry | |
| DTIC (U.S.) Defense Technical Information Center | |
| DTL diode-transistor logicc (electronics) | |
| DTM Deutsche Tourenwagen Masters (German, "German Touring Car Masters"-a current motor racing series),Deutsche Tourenwagen Meisterschaft (German, "German Touring Car Championship"-a defunct motor racing series) | |
| DTMF Dual-tone multi-frequency signaling | |
| DTLOMS Doctrine, Training, Leader development, Organization, Materiel, and Soldier (mnemonic) | |
| DTO Disruptive Technology Office (was ARDA) | |
| DTOMLS Doctrine, Training, Organization, Materiel, Leader and Soldier development (mnemonic) | |
| DTR Determine The Relationship | |
| DTRA Defense Threat Reduction Agency ("deet-ra") | |
| DTSA (U.S.) Defense Technology Security Administration (ii) Defend Trade Secrets Act | |
| DU Depleted Uranium, Dust (METAR Code) | |
| DUI Data Use Identifier,Data Use Institute,Davis Unified Ignition,Diving Unlimited International,Documento Único de Identidad,Documento Unico de Importación,Driving Under the Influence,Duke University Improv | |
| DUMBO Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood) | |
| DUSD (U.S.) Deputy Under-Secretary of Defense | |
| dv Dhivehi language (ISO 639-1 code) | |
| DV Daily Value (FDA food guide),Deo volente (Latin, "God willing") | |
| DVD Digital Versatile Disk (was Digital Video Disk) | |
| DVLC UK Driver and Vehicle Licensing Centre | |
| dvm decessit vita matris (Latin, "died in the lifetime of the mother") | |
| DVM Doctor of Veterinary Medicine | |
| DVO Direct View Optics | |
| DVOM Digital Volt-Ohm Meter | |
| DVP various meanings (disambiguation page) | |
| dvp decessit vita patris (Latin, "died in the lifetime of the father") | |
| dvu decessit vita uxoris (Latin, "died in the lifetime of spouse") | |
| DW Drum Workshop | |
| DWG Divisional Wargame (military simulation) | |
| DWI Dance With Intensity-Danish West Indies-Diffusion-weighted imaging- | |
| DWM Doctor Who Magazine | |
| DWIM Do What I Mean | |
| DWTS Dancing with the Stars | |
| DWW Down with Webster | |
| DX Dexterity (role-playing games), DeXtrorphan,Distant (radio), D-Generation X (professional wrestling stable) | |
| DXA Dual-energy X-ray Absorptiometry | |
| DXM DeXtroMethorphan | |
| Dy Dysprosium | |
| DY Dahomey (ISO 3166 digram; obsolete since 1977) | |
| dz Dzongkha language (ISO 639-1 code) | |
| DZ Algeria (ISO 3166 digram)-Drizzle (METAR Code)-Drop Zone | |
| DZA Algeria (ISO 3166 trigram) | |
| DZD Algerian dinar (ISO 4217 currency code) | |
| dzo Dzongkha language (ISO 639-2 code) | |
| E East | |
| EA Electronic Attack-Emotions Anonymous-Engagement Area- | |
| EABU Explain Acronyms Before Use | |
| EAC Echelons Above Corps | |
| EAFUS "Everything" Added to Food in the United States (FDA list) | |
| EAPC Euro-Atlantic Partnership Council | |
| EASA European Aviation Safety Agency | |
| EAST Experimental Advanced Superconducting Tokamak | |
| EBCDIC (a/i) Extended Binary Coded Decimal Interchange Code (pronounced "eb-see-dik") (cf. BCD) | |
| EBD Electronic Brake Distribution | |
| EBE Extraterrestrial Biological Entity | |
| EBO (i/a) Effects Based Operations,Encyclopædia Britannica Online,European Board of Ophthalmology | |
| EBSA Employee Benefits Security Administration | |
| EBT Earnings Before Taxes,Electronic Benefit Transfer | |
| EBW Electron Beam Welding,Exploding BridgeWire,EC[edit] | |
| EC Ecuador (ISO 3166 digram; FIPS 10-4 country code), Electronic Combat,European Community (see EEC), Exacoulomb | |
| EC2 Many, some as an alternative to EC2, e.g., Elastic Compute Cloud | |
| ECB England (and Wales) Cricket Board,European Central Bank | |
| ECBR European Coalition for Biomedical Research | |
| ECASS European Centre for Analysis in the Social Sciences [1] | |
| ECCM Electronic Counter-Counter-Measures | |
| ECFS Electronic Case Filing System | |
| ECG Electrocardiogram | |
| ECHO Each Community Helps Others (EPA programme),Educational Concerns for Hunger Organization,European Commission Host Organization,European Commission Humanitarian aid Office, Exchange Clearing House,Expanded Characteristic Option, Explanatory Coherence by Harmony Optimization | |
| ECHR European Convention on Human Rights | |
| ECJ European Court of Justice | |
| ECL Emitter Coupled Logic (electronics) | |
| ECM Electronic Counter-Measures,Enterprise Content Management | |
| ECommHR European Commission on Human Rights | |
| ECOWAS Economic Community of West African States | |
| ECS Emergency Contact System,Enhanced Chip Set (computing),EOSDIS Core System,Extended Chip Set (computing) | |
| ECSC European Coal and Steel Community (distant ancestor of the EU) | |
| ECT ElectroConvulsive Therapy | |
| ECtHR European Court of Human Rights | |
| ECU Ecuador (ISO 3166 trigram), European Currency Unit (ancestor of the euro) | |
| ECW Eastern Championship Wrestling/Extreme Championship Wrestling,ED[edit] | |
| EDA European Defence Agency | |
| EDAC Error Detection And Correction | |
| EDCS Environmental Data Coding Specification | |
| EDD Earliest due date,Electron-detachment dissociation,Elena Delle Donne (American basketball player),Employment Development Department (California state agency),End-diastolic dimension,Expected Date of Delivery (pregnancy) | |
| EDECSIM Extended Directed Energy Combat Simulation | |
| EDGAR Electronic Data Gathering, Analysis, and Retrieval (U.S. Securities and Exchange Commission filings database) | |
| EDH Eastman Dental Hospital | |
| EDS Electronic Data Systems,Electronic Differential System | |
| EDSA Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history) | |
| EDT Eastern Daylight Saving Time (UTC−4 hours) | |
| EDTA Electric Drive Transportation Association, EthyleneDiamineTetraAcetic acid,EE[edit] | |
| ee Ewe language (ISO 639-1 code) | |
| EE Estonia (ISO 3166 digram; from the country's native name of Eesti), Electrical engineering,Electrical Engineer,E&E-Escape and Evasion (training) | |
| EEC European Economic Community (predecessor of the EU) | |
| EEG ElectroEncephaloGram | |
| EEK Estonian kroon (ISO 4217 currency code) | |
| EENT End Evening Nautical Twilight | |
| EEO -Equal Employment Opportunity | |
| EEOC -(U.S.) Equal Employment Opportunity Commission | |
| EEZ Economic Exclusion Zone or Exclusive Economic Zone | |
| EF Electro-focus (Canon lens mount),Entry Foyer, Exafarad | |
| EFF Electronic Frontier Foundation | |
| EFL English as a Foreign Language | |
| EFM Enterprise Feedback Management | |
| EFOA European Fuel Oxygenates Association | |
| EFSA European Food Safety Authority | |
| EFT Electronic Fund Transfer | |
| EFTA European Free Trade Area, European Free Trade Association | |
| EFV Expeditionary Fighting Vehicle | |
| EG Egypt (ISO 3166 digram; FIPS 10-4 country code) | |
| EGBUS External Genitalia, Bartholin's glands, Urethra & Skene's glands | |
| EGCG EpiGalloCatechin-3-Gallate | |
| EGIS Erieye Ground Interface Segment | |
| EGP Egyptian pound (ISO 4217 currency code) | |
| EGRET Energetic Gamma-Ray Experiment Telescope | |
| EGY Egypt (ISO 3166 trigram) | |
| EH Exahenry-Western Sahara (ISO 3166 digram) | |
| EHA Education for All Handicapped Children Act (U.S. federal legislation; since superseded by the Individuals with Disabilities Education Act), Emotional Health Anonymous | |
| EHF Extremely High Frequency | |
| EHR Equipment History Record | |
| Ei Exbi | |
| EI Ireland (FIPS 10-4 country code; from Éire) | |
| EIA Environmental Impact Assessment | |
| EIAH Environnements Informatiques pour l'Apprentissage Humain | |
| EIAH Encyclopedia of Iranian Architectural History | |
| EIC East India Company | |
| EICS East India Company's Service | |
| eID electronic ID | |
| EIRP Effective Isotropic Radiated Power | |
| EIS Environmental Impact Statement | |
| EJ Exajoule | |
| EK Equatorial Guinea (FIPS 10-4 country code)-Exakelvin | |
| EKG Electrocardiogram (from German Elektrokardiogramm) | |
| EKMS Electronic Key Management System | |
| el Greek language (ISO 639-1 code) | |
| EL Exalitre | |
| ELF (a/i) Earth Liberation Front,Endangered Language Fund,Eritrean Liberation Front,Executable and Linkable Format,Extremely Low Frequency | |
| ELINT Electronic Intelligence | |
| ell Greek language (ISO 639-2 code) | |
| ELL English Language Learner | |
| ELM Edge-Localised Mode (plasma physics) | |
| ELO Electric Light Orchestra | |
| ELP Emerson, Lake & Palmer,European Left Party | |
| ELSS Emergency Life Support Stores | |
| ELT Emergency Locator Transmitter | |
| Em Exametre | |
| EM ElectroMagnetism/ElectroMagnetic | |
| EMA (i/a) European Medicines Agency | |
| Embraer Empresa Brasileira de Aeronáutica (Portuguese, "Brazilian Aeronautics Company") | |
| EMC Electric Membership Corporation,Electromagnetic Compatibility,Electro-Motive Corporation,European Muon Collaboration,Evergreen Marine Corporation | |
| EMCON (Electromagnetic) Emissions Control | |
| EMD General Motors Electro-Motive Division,Engineering and Manufacturing Development,European Missile Defence | |
| EMDEX Essential Medicines InDEX | |
| EMDG Euro-Missile Dynamics Group | |
| EMDR Eye Movement Desensitisation and Reprocessing | |
| EMEA Europe, Middle East and Africa | |
| EMF Electromotive force,Epsom Mad Funkers (1990s-2000s indie dance band) | |
| EMG ElectroMyoGraph | |
| EMO Emergency Measures Organisation-Emotional | |
| EMP ElectroMagnetic Pulse | |
| EMS Emergency Medical Services | |
| EMT Emergency Medical Technician | |
| EMU Electric Multiple Unit-a method of connecting self-propelled railway vehicles together to form a train under the control of one driver. | |
| EMV Europay, MasterCard, Visa (the companies that developed the current technical standard for chipped payment cards and contactless cards) | |
| en English language (ISO 639-1 code) | |
| EN Corps of Engineers, Estonia (FIPS 10-4 country code),Exanewton | |
| ENCODE Encyclopedia of DNA Elements (human genome data project) | |
| ENE East North-East | |
| eng English language (ISO 639-2 code) | |
| ENG England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram) | |
| ENSATT École nationale supérieure des arts et techniques de théâtre (French, "Higher National School of Theatrical Arts and Techniques") | |
| ENT Ear, Nose and Throat | |
| ENTEC Euro NATO Training Engineer Centre | |
| ENVL Envelope | |
| ENY Enemy | |
| eo Esperanto language (ISO 639-1 code) | |
| EO Electro-Optics,Engagement Operations | |
| EOD Explosive Ordnance Disposal | |
| EOG ElectroOculoGraphy | |
| EOS Earth Observation Satellite,(a/i) Electro-Optical System, Canon's autofocusing system for film and digital SLR cameras, Electrophoresis Operations in Space, a space manufacturing project of the McDonnell Douglas Astronautics Company | |
| EOSAT Earth Observation Satellite | |
| EOSDIS (a/i) Earth Observation Satellite Data and Information System | |
| EOTS Electro-Optical Tactical Sensor,(a/i) Eye Of The Storm (World of Warcraft) | |
| EOM End of Message | |
| EP European Parliament | |
| EP Extended play | |
| EPA EicosaPentaenoic Acid, Environmental Protection Agency | |
| EPCOT Experimental Prototype Community Of Tomorrow | |
| EPCR Endothelial protein C receptor,European Professional Club Rugby | |
| EPFL École polytechnique fédérale de Lausanne (French, "Lausanne Federal Institute of Technology") | |
| EPGS EOS Polar Ground Sites | |
| EPIRB (a/i) Emergency Position Indicating Radio Beacon | |
| EPL English Premier League | |
| EPLRS Enhanced Position Location Reporting System ("ee-plarz") | |
| epo Esperanto language (ISO 639-2 code) | |
| EPO Ellinikí Podosferikí Omospondía (Greek Ελληνική Ποδοσφαιρική Ομοσπονδία, translated as "Hellenic Football Federation"),European Patent Organisation or its main organ, the European Patent Office, Erythropoietin | |
| EPOS Electronic Point Of Sale | |
| EPPA Employee Polygraph Protection Act | |
| EPR European Pressurised [Nuclear] Reactor | |
| EPW Earth Penetrator Weapon/Warhead,Economic and Political Weekly (Indian publication),Enemy Prisoner of War,EQ[edit] | |
| EQ Emotional Quotient | |
| EQG Equatorial Guinea (FIFA trigram, but not IOC or ISO 3166) | |
| Er Erbium | |
| ER Emergency Room, Eritrea (ISO 3166 digram; FIPS 10-4 country code) | |
| ERA Earned run average,Engineering Research Associates,Equal Rights Amendment,English Racing Automobiles,European Railway Agency | |
| ERCIM (a/i) European Research Consortium for Informatics and Mathematics | |
| ERI Eritrea (ISO 3166 trigram) | |
| ERLAWS Eastern Ruapehu Lahar Alarm and Warning System | |
| ERN Eritrean nakfa (ISO 4217 currency code) | |
| EROS Earth Resources Observation System | |
| ERP Engineer Regulating Point | |
| ERR Eesti Rahvusringhääling | |
| ERS Earth Resources Survey | |
| ERTS Earth Resources Technology Satellite (became Landsat) | |
| ERV Endogenous RetroVirus | |
| es Spanish language (ISO 639-1 code) | |
| Es Einsteinium,Exasecond | |
| ES El Salvador (FIPS 10-4 country code), Electronic warfare Support, Exasiemens,Spain (ISO 3166 digram; from the country's native name of España) | |
| ESA Electro-Spark Alloying,Endangered Species Act,European Space Agency | |
| ESC Embryonic Stem Cell,Electronic Stability Control | |
| ESD ElectroStatic Discharge | |
| ESDP European Security and Defence Policy | |
| ESE East South-East | |
| ESH Western Sahara (ISO 3166 trigram) | |
| ESL English as a Second Language | |
| ESM Electronic warfare Support Measures | |
| ESO European Southern Observatory | |
| ESOL English for Speakers of Other Languages | |
| ESP Electronic Stability Program,Extra-sensory perception, Spain (ISO 3166 trigram) | |
| ESPGHAN European Society for Paediatric Gastroenterology, Hepatology and Nutrition | |
| ESPN Entertainment and Sports Programming Network | |
| est Estonian language (ISO 639-2 code) | |
| EST Eastern Standard Time (UTC−5 hours), Estonia (ISO 3166 trigram) | |
| ESU Emergency Services Unit | |
| ESV Engineer Support Vehicle | |
| et Estonian language (ISO 639-1 code) | |
| ET Ethiopia (ISO 3166 digram; FIPS 10-4 country code) | |
| Exatesla Extra Terrestrial | |
| ETA Estimated Time of Arrival, Euzkadi Ta Azkatasuna ("etta", Basque, "Basque Homeland and Freedom"),et al.-et alii/aliae/alia (Latin, "and others") | |
| ETB Ethiopian Birr (ISO 4217 currency code) | |
| ETF Emergency Task Force (a special police unit, also jocularly said to stand for Extra-Thick Fuzz) | |
| ETH Ethiopia (ISO 3166 trigram) | |
| ETI Extra-Terrestrial Intelligence | |
| ETLA Extended TLA | |
| ETM Electronic Technical Manual,Enhanced Thematic Mapper | |
| ETOPS Extended-range Twin-engine Operational Performance Standards (aviation) | |
| ETT Embedded Training Team | |
| eu Basque language (ISO 639-1 code) | |
| Eu Europium | |
| EU Europa Island (FIPS 10-4 country code), European Union | |
| EUCOM (U.S.) European Command | |
| EULA End-User License Agreement ("you-lah") | |
| EUR euro (ISO 4217 currency code) | |
| eus Basque language (ISO 639-2 code) | |
| EUUSA European Union and United States of America | |
| EV Exavolt | |
| EVA Earned Value Analysis,Economic value added,Ethylene-Vinyl Acetate,Extra-Vehicular Activity | |
| EVIL Electronic viewfinder (with) interchangeable lens (a type of digital camera) | |
| EW Electronic Warfare-Exawatt | |
| ewe Ewe language (ISO 639-2 code) | |
| EWR Newark Liberty International Airport (IATA airport code) | |
| EWSD Elektronisches Wählsystem Digital (German, "Electronic Digital Switching System") | |
| EWTN Eternal Word Television Network | |
| EXFOR Experimental Force (military) | |
| EXREP Expeditious Repair (SM&R code) | |
| EYD Ejaan Yang Disempurnakan (Indonesian, "Perfected Spelling System", used officially in Indonesia since 1972),Eurovision Young Dancers,EZ[edit] | |
| EZ Czech Republic (FIPS 10-4 country code)-Extraction Zone | |
| EZLN Ejército Zapatista de Liberación Nacional (Spanish, "Zapatista Army of National Liberation") | |
| f Femto | |
| F Farad-Fluorine | |
| fa Persian language (ISO 639-1 code) | |
| FA Food Addicts in Recovery Anonymous | |
| fA Femtoampere | |
| FA Field Artillery,Financial aid,Football Association (England) | |
| FAA U.S. Federal Aviation Administration,Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis | |
| FAAD Forward Area Air Defence | |
| FAADEZ Forward Area Air Defence Engagement Zone | |
| FAAN Fellow of the American Academy of Neurology | |
| FAAFP Fellow of the American Academy of Family Physicians | |
| FAAN Fellow of the American Academy of Nursing | |
| FAANG Facebook, Amazon, Apple, Netflix, Google (the leading stocks in the late-2010s US market rally) (c.f. FANG, which originally did not include Apple) | |
| FAAQ (a/i) Frequently Asked and Anticipated Questions (cf. FAQ) | |
| FAASV Field Artillery Ammunition Supply Vehicle | |
| FAB Feline Advisory Bureau (UK feline charity) | |
| FAC Forward Air Controller,Front of Allies for Change,Frontal Affinity Chromatography,Full Aperture Calibrator | |
| FACA (US) Federal Advisory Committee Act | |
| FACH Fuerza Aérea de Chile | |
| FACN Fellow of the American College of Nutrition | |
| FACP Fellow of the American College of Physicians | |
| FACS Fellow of the American College of Surgeons, Formal Aspects of Computing Science,Fluorescent-activated cell sorting | |
| FACTS Flexible Alternating Current Transmission System | |
| FAD Flavin Adenine Dinucleotide,Fuck A Duck, Funding Authorization Document,M18 FADAC-Field Artillery Data Computer | |
| FAH Federation of American Hospitals,Fine Arts and Humanities,Foreign Affairs Handbook | |
| FAI Fédération Aéronautique Internationale (French, "International Aeronautics Federation"),Football Association of Ireland | |
| FAM Foreign Affairs Manual | |
| fao Faroese language (ISO 639-2 code) | |
| FAO Food and Agriculture Organization | |
| FAPA Fellow of the American Psychological Association | |
| FAPHA Fellow of the American Public Health Association | |
| FAQ (a/i) Frequently Asked Questions (sometimes pronounced "fak") | |
| FARC Fuerzas Armadas Revolucionarias de Colombia (Spanish, "Revolutionary Armed Forces of Colombia") | |
| FARDC "Military of the Democratic Republic of the Congo | |
| FARP Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point | |
| fas Persian language (ISO 639-2 code) | |
| FAS Federation of American Scientists,Fetal Alcohol Syndrome | |
| FASCAM Family of Scatterable Mines[1] | |
| FASD Fetal Alcohol Spectrum Disorder | |
| FASEB (a/i) Federation of American Societies for Experimental Biology | |
| FAST Face, Arm, Speech, Time (stroke symptoms),Five hundred meter Aperture Spherical Telescope (Chinese radio telescope),Fixing America's Surface Transportation Act (U.S. legislation) | |
| FAT Field Artillery Tractor-File Allocation Table | |
| FAVS Future Armoured Vehicle System | |
| FAW Football Association of Wales | |
| FB Facebook, An on-line social network | |
| FBCS Fellow of the British Computer Society | |
| FBI Federal Bureau of Investigation | |
| FBIS Foreign Broadcast Information Service | |
| FBIDST Fellow of the British Institute of Dental and Surgical Technologists | |
| FBM Board foot | |
| FBR Fast Breeder Reactor,Foundation for Biomedical Research,Friedman, Billings, Ramsey (now known as Arlington Asset Investment) | |
| FBS Federal Bureau of Statistics (Pakistan),Fetal bovine serum,Football Bowl Subdivision (U.S. college football),Fukuoka Broadcasting Corporation,FC[edit] | |
| fC Femtocoulomb | |
| FC Fire Control,Football Club, Funnel Cloud (METAR Code) | |
| FCA Fellowship of Christian Athletes,Fiat Chrysler Automobiles,Fraction of Combat Active forces | |
| FCC U.S. Federal Communications Commission | |
| FCE First Certificate in English | |
| FCF Financial Free Cash Flow | |
| FCLA Fraud Claims Law Associate | |
| FCM Federation of Canadian Municipalities,Fogarty's Cove Music | |
| FCO UK Foreign and Commonwealth Office | |
| FCS Football Championship Subdivision (U.S. college football),Future Combat System | |
| FCW Florida Championship Wrestling | |
| FCZ Forward Combat Zone | |
| FD Falun Dafa | |
| FDA Food and Drug Administration (U.S.) | |
| FDC Federal Detention Center (U.S.)-Fire Direction Centre | |
| FDDI Fibre Distributed Data Interface | |
| FDBK (I) Feedback | |
| FDR Flight Data Recorder-Franklin Delano Roosevelt | |
| Fe Iron (Latin Ferrum) | |
| FE Fully Exposed (armoured vehicle target, as opposed to Hull-Down) | |
| FEAR First Encounter Assault Recon-False Evidence Appears Real | |
| FEAST (a/i) Forum for European-Australian Science and Technology Cooperation | |
| FEATS Festival of European Anglophone Theatrical Societies[2] | |
| FEB Federación Española de Baloncesto (Spanish, "Spanish Basketball Federation"),Federatie Eredivisie Basketball (Dutch, "Federation Honorary Division (of) Basketball"), the former name of the basketball competition now known in Dutch by the English-language Dutch Basketball League,Força Expedicionária Brasileira (Portuguese, "Brazilian Expeditionary Force") | |
| FEBA Forward Edge of the Battle Area | |
| FED (a/i) Field emission display | |
| FEDEP Federation Development Process (Simulation) | |
| FEF Frontal Eye Field (neurophysiology) | |
| FEI Fédération équestre internationale (French, "International Federation for Equestrian Sports") | |
| FEMA (a/i) Farm Equipment Manufacturers Association,(a/i) U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association | |
| FEMEXFUT Federación Mexicana de Fútbol Asociación (Spanish, "Mexican Association Football Federation") | |
| FENAFUTH Federación Nacional Autónoma de Fútbol de Honduras (Spanish, "National Autonomous Football Federation of Honduras") | |
| FENS (a/i) Federation of European Neuroscience Societies | |
| FEP Firepower Enhancement Program-Fleet satellite (FLTSAT) Extremely high frequency (EHF) Package | |
| FEPAFUT Federación Panameña de Fútbol (Spanish, "Panamanian Football Federation") | |
| FES Flywheel Energy Storage | |
| FEST Frankfurt English Speaking Theatre[3] | |
| FET Field-effect transistor | |
| FEZ (a/i) Fighter Engagement Zone | |
| ff Fula language (ISO 639-1 code) | |
| fF Femtofarad | |
| FF Final Fantasy, Firefox (Web browser) | |
| FFA Football Federation Australia,Pacific Islands Forum Fisheries Agency,Free-Fire Area,Fusiform Face Area,Future Farmers of America (today the National FFA Organization) | |
| FFB Frum From Birth (referring to an observant Jew born into a religiously observant family) | |
| FFC Free For Chat | |
| FFE Fukuoka Futures Exchange | |
| FFF Fédération française de football (French, "French Football Federation") | |
| FFG Guided Missile Frigate (hull classification symbol) | |
| FFOV Forward Field Of View | |
| FFR Fédération française de rugby (French, "French Rugby (Union) Federation") | |
| FFS For Fuck's Sake | |
| FFT Fast Fourier Transform,Final Fantasy Tactics,FG[edit] | |
| FG Falun Gong | |
| fg Femtogram | |
| FG Fog (METAR Code)-French Guiana (FIPS 10-4 territory code) | |
| FGR Flickr Group Roulette | |
| fH Femtohenry | |
| FHFIF Foster's Home for Imaginary Friends | |
| FHI Family Health International, Fuji Heavy Industries, Ltd. | |
| fi Finnish language (ISO 639-1 code) | |
| FI Finland (ISO 3166 digram; FIPS 10-4 country code) | |
| FIA Fédération internationale de l'automobile (French "International Automobile Federation") | |
| FIAT Fabbrica Italiana Automobili Torino (Italian "Italian Car Factory of Turin") | |
| FIB Fucking Illinois Bastard (Wisconsin slang, variants exist) | |
| FIBA originally Fédération internationale de basket-ball amateur (French, "International Amateur Basketball Federation"); since 1989, Fédération internationale de basket-ball | |
| FIBUA (i/a) Fighting In Built-Up Areas | |
| FIC Fellowship for Intentional Community | |
| FID Foreign Internal Defence | |
| FIE Fly-In Echelon | |
| FIFA Fédération internationale de football association (French, "International Association Football Federation") | |
| FIFe Fédération internationale féline (French, "International Feline Federation") | |
| FIFO First In, First Out | |
| FIFRA Federal Insecticide, Fungicide, and Rodenticide Act | |
| FIG Fédération internationale des géomètres (French, "International Federation of Surveyors"),Fédération internationale de gymnastique (French, "International Federation of Gymnastics"),Feminist Improvising Group (music ensemble) | |
| FIGJAM Fuck I'm Good, Just Ask Me | |
| fij Fijian language (ISO 639-2 code) | |
| FILA Fédération internationale des luttes associées (French, "International Federation of Associated Wrestling Styles"), former name of the sport governing body now known as United World Wrestling | |
| FILO First In, Last Out (see also LIFO) | |
| FIMPT Fellow of the Institute of Maxillofacial Prosthetists and Technologists | |
| fin Finnish language (ISO 639-2 code) | |
| FIN Finland (ISO 3166 trigram) | |
| FINA (p/a) Fédération internationale de natation (French, "International Swimming Federation") | |
| FIPS Federal Information Processing Standard | |
| FIR Final Inspection Report,Federazione Italiana Rugby (Italian, "Italian Rugby (Union) Federation") | |
| FIRES Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome | |
| FIS (a/i) Fédération internationale de ski (French "International Ski Federation") | |
| FISA Fédération Internationale des Sociétés d'Aviron (French, "International Federation of Rowing Associations") | |
| FISH Fluorescence In-Situ Hybridisation | |
| FiST Fire Support Team | |
| FITS Flexible Image Transport System | |
| FIU Florida International University | |
| fj Fijian language (ISO 639-1 code) | |
| fJ Femtojoule | |
| FJ Fiji (ISO 3166 digram; FIPS 10-4 country code) | |
| FJD Fiji dollar (ISO 4217 currency code) | |
| FJI Fiji (ISO 3166 trigram) | |
| FJN Financial Job Network | |
| fK Femtokelvin | |
| FK Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code) | |
| FKP Falkland Islands pound (ISO 4217 currency code) | |
| FKSM Fort Knox Supplemental Manual | |
| FKT Fastest Known Time | |
| fl floruit (Latin, "living") (genealogy) | |
| fL Femtolitre | |
| FL Florida (postal symbol) | |
| FLA Florida-Front Line Assembly-Future Large Aircraft | |
| FLAC (a/i) Free Lossless Audio Codec | |
| FLAC (a/i) Free Legal Advice Centres | |
| FLAK FLugAbwehrKanone (German for "Anti-Aircraft Guns") | |
| FLB Forward Logistics Base | |
| FLET (a/i) Forward Line of Enemy Troops | |
| FLG Falun Gong | |
| FLIP Flight Information Publication | |
| FLIR Forward Looking InfraRed (sensor) | |
| FLK Falkland Islands (ISO 3166 trigram) | |
| FLOT (a/i) Forward Line of Own Troops | |
| FLSA Fair Labor Standards Act | |
| FLQ Front de libération du Québec (French for "Québec Liberation Front") | |
| FLQ Free Legal Questions | |
| FLTSAT Fleet Satellite | |
| FLTSATCOM Fleet Satellite Communication System | |
| FLUBOS Fat, Lazy, Useless, Bag Of Shit | |
| FM Factory Mutual http://fmglobal.com | |
| fm Femtometre | |
| Fm Fermium | |
| FM Federal Magistrate (Australian post-nominal), Federated States of Micronesia (postal symbol; ISO 3166 digram; FIPS 10-4 territory code), Field Manual,Flight Manager,Frequency Modulation (electronics) | |
| FMC Federal Magistrates' Court (an Australian federal court, formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation) | |
| FMCA Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions) | |
| FMCAfam Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC) | |
| FME Formal Methods Europe | |
| FMECA Failure Modes and Effect Criticality Analysis | |
| FMJD Fédération Mondiale du Jeu de Dames[4] | |
| FMLA Family Medical Leave Act | |
| Fmr Former (as in "Fmr. president") | |
| fMRI Functional Magnetic Resonance Imaging | |
| FMS Federal Magistrates Service (an Australian federal court, now FMC), Flight Management System,Foreign Military Sales | |
| FMSF False Memory Syndrome Foundation | |
| FMTV Family of Medium Tactical Vehicles | |
| FMCG (Fast-Moving Consumer Goods) | |
| fN Femtonewton | |
| FNA Functional Needs Analysis | |
| fo Faroese language (ISO 639-1 code) | |
| FO | |
| FOAD Fuck Off And Die | |
| FOAF Friend Of A friend | |
| FoB Free On Board (shipping) | |
| FOB (i/a) Forward Operating Base | |
| FOC Full Operational Capability-First of Class | |
| FoE Friends of the Earth | |
| FOGC Federal Oil and Gas Council | |
| FOH Front Of House | |
| FOIA Freedom of Information Act | |
| FOM Federation Object Model | |
| FONSI Finding of No Significant Impact | |
| FOO Forward Observation Officer | |
| FOR Field Of Regard-Frame Of Reference | |
| Fortran The IBM Mathematical FORmula TRANslating System (programming language) | |
| FOS Florida Ornithological Society-Full Operational Status | |
| FoS Family of Systems | |
| FOSE Fallout 3 Script Extender | |
| FOSE Federal Office Systems Expo | |
| FOT Free on truck | |
| FOTA Fellow of the Orthodontic Technicians Association | |
| FOTC Flight of the Conchords | |
| FOUO For Official Use Only | |
| FOV Field Of View | |
| FP French Polynesia (FIPS 10-4 territory code) | |
| FPF Federação Portuguesa de Futebol ("Portuguese Football Federation" in that language),Final Protective Fire | |
| fps frames per second (motion pictures, television, computer graphics) | |
| FPS Fire Prevention System,First Person Shooter (computer/video games) | |
| FOOP Friends Of Organ Pipes (Volunteer group) | |
| FQ Baker Island (FIPS 10-4 territory code)-French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979) | |
| FQDN Fully Qualified Domain Name | |
| fr French language (ISO 639-1 code) | |
| Fr Francium | |
| FR France (FIPS 10-4 country code; ISO 3166 digram) | |
| fra French language (ISO 639-2 code) | |
| FRA Federal Railroad Administration, France (ISO 3166 trigram) | |
| FRAGO Fragmentary Order (military) | |
| FRAND Fair, reasonable, and non-discriminatory (concept in standards-setting and intellectual property law) | |
| FRCP Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians | |
| FRICBM Full Range ICBM | |
| frr North Frisian language (ISO 639-2 code) | |
| FRR Falls Road Railroad (reporting mark), Federaţia Română de Radioamatorism (Romanian, "Romanian Amateur Radio Federation"), Fix, Rebuild, Replace,Federaţia Română de Rugby (Romanian, "Romanian Rugby (Union) Federation") | |
| FRO Faroe Islands (ISO 3166 trigram) | |
| FRS Fellow of the Royal Society,U.S. Federal Reserve System | |
| FRSA Fellow of the Royal Society of Art | |
| FRSL -Fellow of the Royal Society of Literature | |
| fry West Frisian language (ISO 639-2 code) | |
| FRY Federal Republic of Yugoslavia | |
| fs Femtosecond | |
| fS Femtosiemens | |
| FS Fire Support (military), French Southern and Antarctic Territories (FIPS 10-4 territory code) | |
| FSA Fire Support Area,UK Food Standards Agency,Functional Solution Analysis | |
| FSB Federal'naya Sluzhba Bezopasnosti Rossiyskoi Federatsii (Федера́льная слу́жба безопа́сности Росси́йской Федера́ции, Russian "Federal Security Service of the Russian Federation", succeeded the FSK in 1995),Forward Support Battalion | |
| FSC Federal Supply Classification, Forest Stewardship Council (ecological pressure group | |
| FSCL Fire Support Co-ordination Line | |
| FSE Fire Support Element | |
| FSF Free Software Foundation | |
| FSH Follicle-stimulating hormone | |
| FSI Fuel Stratified Injection | |
| FSK Federal'naya Sluzhba Kontrrazvedki (Федера́льная Слу́жба Контрразве́дки, Russian "Federal Counterintelligence Service", succeeded the KGB in 1991) | |
| FSM Federated States of Micronesia (ISO 3166 trigram), Flying Spaghetti Monster (satirical religion) | |
| FSO Fire Support Officer,Flotilla Staff Officer,Foreign Service Officer | |
| FSS Fire Support Station | |
| FSSP Families of Structurally Similar Proteins | |
| FST Finance Support Team,Finlands Svenska Television (Finland's Swedish-language television),Future Soviet Tank (Cold War era) | |
| FSTC Foreign Science Technology Center (now NGIC) | |
| FSV Fire Support Vehicle,Fisheries Survey Vessel,Flexible Sender Validation,Fort St. Vrain,Fußball und Sportverein (German "Football and Sport Association", as in FSV Mainz),FT[edit] | |
| fT Femtotesla | |
| FTC Federal Trade Commission | |
| FTE Full Time Equivalent | |
| FTL Faster Than Light | |
| FTP File Transfer Protocol | |
| FTSE (a/i) Financial Times Stock Exchange ("footsie") | |
| FTW For The Win (a commonly used phrase used online to indicate success) F@#K The World, Forever Together Where ever (gang slogan) | |
| FTS Flight Termination System used during some rocket launches | |
| FTS Fuck That Shit | |
| FTS Follow-the-sun | |
| FU Smoke (METAR Code) | |
| FUBAR Fucked/Fouled Up Beyond All Recognition/Repair | |
| FUCK For, Unlawful, Carnal, Knowledge (Van Halen album title) | |
| FUD Fear, Uncertainty & Doubt (marketing strategy) | |
| ful Fula language (ISO 639-2 code) | |
| fV Femtovolt | |
| fW Femtowatt | |
| FW Forward | |
| FWC Football World Cup | |
| FWF Fixed Word Format | |
| FWI French West Indies | |
| FWIW For What It's Worth | |
| FWS U.S. Fish and Wildlife Service | |
| FWT Fresh Water Tank | |
| FX Firefox-Fox Extended-Metropolitan France (ISO 3166 digram; obsolete 1997)-Special effect | |
| FXX Metropolitan France (ISO 3166 trigram; obsolete 1997) | |
| fy West Frisian language (ISO 639-1 code) | |
| FY Fiscal Year-Former Yugoslav Republic of Macedonia (NATO country code) | |
| FYA For Your Agenda | |
| FYDP Five-Year Defense Plan (U.S.) | |
| FYI For Your Information | |
| FYROM Former Yugoslav Republic of Macedonia, currently North Macedonia | |
| FZDZ Freezing Drizzle (METAR Code) | |
| FZFG Freezing Fog (METAR Code) | |
| FZRA Freezing Rain (METAR Code) | |
| g Gram | |
| G Gauss-General Audiences (movie rating) | |
| G1 Assistant Chief-of-Staff, Personnel | |
| G2 Assistant Chief-of-Staff, Intelligence | |
| G3 many, including Heckler & Koch G3; see entry-Assistant Chief-of-Staff, Operations and Plans | |
| G4 Generation Four PowerPC microprocessor-Assistant Chief-of-Staff, Logistics | |
| G5 Generation Five PowerPC microprocessor-Assistant Chief-of-Staff, Public Affairs | |
| G6 Assistant Chief-of-Staff, Information Technology-Group of 6 (France, Germany, United States, Japan, United Kingdom, Italy) (1975) | |
| G7 Assistant Chief-of-Staff, Training-Group of 7 (G6 + Canada) (1976) | |
| G8 Assistant Chief-of-Staff, Finance-Group of 8 (G7 + Russia) (1998) | |
| G9 Assistant Chief-of-Staff, Civil-Military Co-operation (CIMIC) | |
| G10 Group of 10 (G7 + Belgium, Netherlands, Sweden, Switzerland; numbering 11 in fact) | |
| G15 Group of 15 (subset of G77, formed 1989: Algeria, Argentina, Brazil, Chile, Egypt, India, Indonesia, Jamaica, Kenya, Nigeria, Malaysia, Mexico, Peru, Senegal, Sri Lanka, Venezuela and Zimbabwe; currently numbers 17) | |
| G20 Group of 20 (G8 + Argentina, Australia, Brazil, China, India, Indonesia, Mexico, Saudi Arabia, South Africa, South Korea, Turkey + current European Union presiding country) (1999) | |
| G24 Group of 24 (subset of G77, formed 1971: Algeria, Argentina, Brazil, Colombia, Côte d'Ivoire, Democratic Republic of the Congo, Egypt, Ethiopia, Gabon, Ghana, Guatemala, India, Iran, Lebanon, Mexico, Nigeria, Pakistan, Peru, Philippines, South Africa, Syria, Sri Lanka, Trinidad and Tobago and Venezuela) | |
| G77 Group of 77 (issued from the United Nations Conference on Commerce and Development, 1964; currently numbers 133) | |
| Ga Gallium-Gigaannum | |
| GA Gabon (ISO 3166 digram)- | |
| GAAR General Anti-Avoidance Rule (tax evasion) | |
| GAB Gabon (ISO 3166 trigram) | |
| GABA Gamma-AminoButyric Acid | |
| GAD Generalized Anxiety Disorder | |
| GAF Garfield and Friends | |
| GALCIT Guggenheim Aeronautical Laboratory, California Institute of Technology | |
| GAO U.S. Government Accountability Office | |
| GAW Global Atmospheric Watch | |
| GB Gabon (FIPS 10-4 country code)-United Kingdom of Great Britain and Northern Ireland (ISO 3166 digram) [glamour boy 7-9/10] | |
| GBBC Great (Global) Backyard Bird Count | |
| GBE Knight/Dame Grand Cross of the Order of the British Empire | |
| GBH Great Bash Heel (Japanese professional wrestling stable),Gregory Bonner Hale (British design and advertising agency),Grievous bodily harm | |
| GBP United Kingdom pound sterling (ISO 4217 currency code) | |
| GBR United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram) | |
| GBU Glide-Bomb Unit-Global Business Unit | |
| GC East Germany (NATO country code; obsolete 1990), General classification (cycling),General counsel,George Cross (British civil decoration), Gigacoulomb [Grindr cruise] | |
| GCA Graduate in Claims Administration | |
| GCCS (i/a) Global Command and Control System ("geeks") | |
| GCD see entry | |
| GCF Greatest Common Factor | |
| GCI Ground-controlled interception | |
| GCN Gamma-ray burst Coordination Network | |
| GCS Global Coordinate System | |
| GCSE General Certificate of Secondary Education (UK) | |
| gd Scottish Gaelic language (ISO 639-1 code) | |
| Gd Gadolinium | |
| GD Grenada (ISO 3166 digram) | |
| GDC Game Developers Conference-General Dental Council | |
| GDL Game Definition Language | |
| GDP General Dental Practitioner (UK)-Gross Domestic Product | |
| GDR German Democratic Republic (cf. DDR) | |
| GDR General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack) | |
| GDW Game Designers Workshop | |
| Ge Germanium | |
| GE General Electric-Genetic Engineering (cf. GM)-Georgia (ISO 3166 digram) | |
| GEBCO General Bathymetric Chart of the Oceans | |
| GEC Great Engineering Challenge | |
| GED General Educational Development (high school equivalency credential in the U.S. and Canada) | |
| GEEP Geophysical Equipment Exploration Platform | |
| GEL Georgian lari (ISO 4217 currency code)-Gilbert and Ellice Islands (ISO 3166 trigram; obsolete 1977) | |
| GEMA | |
| GEN Full General (four stars) in the U.S. Army | |
| GEO Geostationary Earth Orbit-Georgia (ISO 3166 trigram) | |
| GEOS Graphical Environment Operating System | |
| GEQ Equatorial Guinea (IOC trigram, but not FIFA or ISO 3166) | |
| GER Germany (IOC and FIFA trigram, but not ISO 3166) | |
| Gestapo GEheime STAatsPOlizei (German "secret state police") | |
| GeV Gigaelectron-volt | |
| GEV Ground Effect Vehicle | |
| GF French Guiana (ISO 3166 digram),Gigafarad | |
| GFCF Gluten-free, casein-free diet,Gross fixed capital formation | |
| GFCI Ground Fault Circuit Interruptor (aka GFI) | |
| GFDL GNU Free Documentation License | |
| GFE Girlfriend experience (used in escort services),Good Faith Estimate,Government Furnished Equipment | |
| GFI Ground Fault Interruptor (aka GFCI) | |
| GFL German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation) | |
| GFN Global Footprint Network | |
| GFW Global Force Wrestling-either the original incarnation or Impact Wrestling, which was briefly known under the name, Great Firewall of China (cf. Internet censorship in China) | |
| GFY "good for you" or "go fuck yourself", depending on the context (Internet chat) | |
| GG Georgia (FIPS 10-4 country code) | |
| GGK Good God Karma | |
| GGWP Good Game Well Play | |
| GGP General Game Playing,GH[edit] | |
| GH Ghana (ISO 3166 digram; FIPS 10-4 country code)-Gigahenry | |
| GHA Ghana (ISO 3166 trigram) | |
| GHB gamma-Hydroxybutyric acid | |
| GHC Ghanan cedi (ISO 4217 currency code) | |
| Gi Gibi | |
| GI Galvanised Iron- | |
| GIB Gibraltar (ISO 3166 trigram) | |
| GIF Graphics Interchange Format | |
| GIG Global Information Grid | |
| GIGO Garbage In Garbage Out (computing) | |
| GIMP GNU Image Manipulation Program | |
| GIN Guinea (ISO 3166 trigram)-Guidelines International Network | |
| GIP Gibraltar pound (ISO 4217 currency code) | |
| GIS Geographic Information System-Google Image Search | |
| GISS (a/i) General Impression of Size and Shape-Goddard Institute for Space Studies | |
| GJ Gigajoule-Grenada (FIPS 10-4 country code)- | |
| GJD Geocentric Julian Day | |
| GK Gigakelvin-Guernsey (FIPS 10-4 territory code) | |
| gl Galician language (ISO 639-1 code) | |
| GL Gigalitre, Graphics Language, Greenland (ISO 3166 digram; FIPS 10-4 territory code), Grenade Launcher | |
| gla Scottish Gaelic language (ISO 639-2 code) | |
| GLAAD Gay and Lesbian Alliance Against Defamation | |
| GLAC General Ledger Accounting Code | |
| GLAST Gamma-ray Large Area Space Telescope | |
| GLBA Gramm-Leach-Bliley Act | |
| GLC Gas-liquid chromatography | |
| gle Irish language (ISO 639-2 code) | |
| glg Galician language (ISO 639-2 code) | |
| GLINT Gallium-arsenide Laser Illuminator for Night TV,Gated Laser Illuminator for Narrow Television, Gated Laser Intensifier (tape),Gospel Literature International,Graphical Linux Installation Tool | |
| GLONASS Globalnaya navigatsionnaya sputnikovaya sistema (Russian Глоба́льная Навигацио́нная Спу́тниковая Систе́ма, "Global Navigation Satellite System") | |
| GLP Guadeloupe (ISO 3166 trigram) | |
| GLUT (a/i) OpenGL Utility Toolkit | |
| glv Manx language (ISO 639-2 code) | |
| GLV Gained Life Value | |
| Gm Gigametre | |
| GM The Gambia (ISO 3166 digram), GameMaster (role-playing),General Motors,Genetically Modified, Germany (FIPS 10-4 country code), Guru Meditation (computing) | |
| GMAC General Motors Acceptance Corporation, the original name of the company now known as Ally Financial,Graduate Management Admission Council,G-MAC, Great Midwest Athletic Conference | |
| GMB The Gambia (ISO 3166 trigram), General, Municipal, Boilermakers (and Allied Trade Union) | |
| GmbH Gesellschaft mit beschränkter Haftung (German, "Company with limited liability") | |
| GMC U.K. General Medical Council,Gospel Music Channel | |
| GMD Gambian dalasi (ISO 4217 currency code) | |
| GMFSC Ground Mobile Forces Satellite Communications | |
| GMI Generic Model Interface,Geometry Model Instance | |
| GML Generalized Markup Language,Geography Markup Language,Game Maker Language,Graph Modelling Language,Graphical Motion Language,GUI Markup Language | |
| GMO Genetically Modified Organism | |
| GMPCS Global Mobile Personal Communications by Satellite | |
| GMT Giant Magellan Telescope,Greenwich Mean Time,GN[edit] | |
| gn Guaraní language (ISO 639-1 code) | |
| GN Giganewton,Guinea (ISO 3166 digram) | |
| GNAS Grand National Archery Society | |
| GNB Guinea-Bissau (ISO 3166 trigram) | |
| GNC "G&C Records" NetLabel,General Nutrition Centers (US sports nutrition retailer branded as GNC) | |
| GNF Guinean franc (ISO 4217 currency code) | |
| GNOME GNU Network Object Model Environment | |
| GNP Gross National Product | |
| GNQ Equatorial Guinea (ISO 3166 trigram) | |
| GnRH Gonadotropin-Releasing Hormone | |
| GNU GNU's Not Unix | |
| GO Glorioso Islands (FIPS 10-4 territory code) | |
| GOA General of the Army (United States only), Gun Owners of America | |
| GOAT Greatest of all time (LL Cool J album title) | |
| GOC General Officer Commanding | |
| GOES Geostationary Operational Environmental Satellite | |
| GOP Grand Old Party | |
| gorp granola, oats, raisins, peanuts (another name for trail mix), probably a backronym | |
| GOSC (a/i) General Officer Steering Committee | |
| GOSH Great Ormond Street Hospital | |
| GOSP Gas/Oil Separation Plant | |
| GOTS Government off-the-shelf | |
| GOWI Get On With It | |
| GOYADIN Get Off Your Arse, Do It Now (anti-procrastination mantra) | |
| GP | |
| GPA Grade Point Average | |
| GPC Global Path Cache | |
| GPG GNU Privacy Guard | |
| GPIB General-Purpose Instrumentation/Interface Bus | |
| GPL GNU General Public License | |
| GPMP General Purpose Macro Processor | |
| GPO General Post Office | |
| GPPC Genetics and Public Policy Center | |
| GPR Ground-Penetrating Radar | |
| GPS General Problem Solver-Global Positioning System | |
| GPT GEC-Plessey Telecommunications-General Purpose Technology-Get Paid To website | |
| GPU Gosudarstvennoye Politicheskoye Upravlenie (Russian Государственное Политическое Управление, "State Political Administration") (1922-1934)-Graphics Processor Unit | |
| GQ Equatorial Guinea (ISO 3166 digram), Gentlemen's Quarterly (the original name of the magazine now known simply as GQ), Guam (FIPS 10-4 territory code),GR[edit] | |
| GR Greece (FIPS 10-4 country code; ISO 3166 digram)-Hail (METAR Code) | |
| GRAIL Gravity Recovery and Interior Laboratory | |
| GRAS Generally recognized as safe (FDA list) | |
| GRB Gamma-ray burst | |
| GRC Greece (ISO 3166 trigram) | |
| GRD Grenada (ISO 3166 trigram) | |
| GRE Graduate Record Examination, Greece (IOC and FIFA trigram, but not ISO 3166) | |
| grep [search] Globally for Regular Expression, Print [lines] | |
| GRid Global Release Identifier, a music industry identifier from the RIAA and IFPI | |
| GRID Gay-Related Immune Deficiency (original name of AIDS) | |
| GriT Girl raised in Texas (Woman presenting firm southern traits/beliefs) | |
| GRL Greenland (ISO 3166 trigram) | |
| GRN Grenada (IOC and FIFA trigram, but not ISO 3166), Goods received note | |
| grn Guaraní language (ISO 639-2 code) | |
| GRP Graphite-reinforced plastic, see Carbon-fiber-reinforced polymer | |
| GRU Glavnoje Razvedyvatel'noje Upravlenije/Главное Разведывательное Управление (Russian, "Main Intelligence Directorate" [of the former Soviet and now Russian armed forces]) | |
| Gs Gigasecond | |
| GS General Schedule (US civil service pay scale),General Support, Gigasiemens,South Georgia and the South Sandwich Islands (ISO 3166 digram) | |
| GSR Gun Shot Residue | |
| GSA U.S. General Services Administration | |
| GSD Graphical Situation Display | |
| GSG German Sport Guns,Global Scenario Group (former environmental research organization),Grenzschutzgruppe (German, "Border Guard Group" — Germany's GSG 9 counterterrorist unit was originally a special branch of the border police) | |
| GSGB (God send glamour boy 9-10/10) | |
| GSK GlaxoSmithKline [good sexual karma] | |
| GSM General Service Medal,Grams per Square Metre (paper thickness; properly g/m2),Ground Station Module,Groupe spécial mobile (French, "Special Mobile Group"; official expansion is now Global System for Mobile Communications) | |
| GSN (a/i) Game Show Network | |
| GSO General Services Officer (U.S. Department of State) | |
| GSOH Good Sense Of Humour | |
| GSP Georges St-Pierre (Canadian MMA fighter) | |
| GSS Generic Security Services | |
| GST Goods and Services Tax (Australia, Canada, and other countries) | |
| GSW Gunshot wound | |
| GT | |
| GTA Grand Theft Auto | |
| GTB Get to bed, namely to get a new job after a long time of searching, usually following a phone call | |
| GTC Gran Telescopio Canarias (Spanish, Canaries Great Telescope) | |
| GTD Getting Things Done | |
| GTFO "Get the fuck out!" | |
| GTG Got To Go (Internet chat) | |
| GTK Good To Know (Internet chat) | |
| GTGN Getty Thesaurus of Geographic Names | |
| GTM Guatemala (ISO 3166 trigram) | |
| GTQ Guatemalan quetzal (ISO 4217 currency code) | |
| GTV Gross Tumor Volume quetzal (ISO 4217 currency code) | |
| gu Gujarati language (ISO 639-1 code) | |
| GU Guam (postal symbol; ISO 3166 digram) | |
| GUA Guatemala (IOC and FIFA trigram, but not ISO 3166) | |
| GUF French Guiana (ISO 3166 trigram) | |
| GUI Graphical user interface ("goo-ey") | |
| GUILT Gangliated Utrophin Immuno Latency Toxin | |
| guj Gujarati language (ISO 639-2 code) | |
| GULCR Grupo de Usuarios de Linux de Costa Rica | |
| Gulag Glavnoye Upravleniye ispravitelno-trudovykh LAGerei i kolonii (Russian Главное Управление Исправительно—Трудовых Лагерей и колоний, "Main Directorate of Corrective Labour Camps") | |
| GUM Glavnyi Universalnyi Magazin (Russian Главный Универсальный Магазин, "Main Department Store"; known in Soviet times as Gosudarstvennyi Universalnyi Magazin/Государственный Универсальный Магазин, "State Department Store"), Guam (ISO 3166 trigram),Guide to the expression of Uncertainty in Measurement | |
| GUT Grand Unification Theory | |
| gv Manx language (ISO 639-1 code) | |
| GV Gigavolt-Guinea (FIPS 10-4 country code) | |
| GW Games Workshop- | |
| GWARS Ground Warfare System (simulation) | |
| GWAS Grand Western Archery Society | |
| GWOT Global War on Terrorism | |
| GWS Gulf War Syndrome-Greater Western Sydney | |
| GXA Global XML Web Services Architecture | |
| GXE Gene-enivronment interaction | |
| GXF General Exchange Format | |
| GXH IATA code of Gannan Xiahe Airport | |
| GXL Graph eXchange Language | |
| GXM Matrox Graphics eXpansion Module | |
| GXP Grid Exit Point-Global Xchange Programme-Indication of highest performance level on some Pontiac vehicles | |
| GxP Good X Practice | |
| GXY IATA code of Greeley-Weld County Airport | |
| GY -Guyana (FIPS 10-4 country code; ISO 3166 digram) | |
| GYD Guyana dollar (ISO 4217 currency code) | |
| GYY Gary/Chicago International Airport (IATA Airport Code) | |
| GZ Gaza Strip (FIPS 10-4 territory code)-Ground Zero | |
| GZK Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies) | |
| h Hecto | |
| H Henry-Hydrogen | |
| ha Hausa language (ISO 639-1 code)-Hectare | |
| HA Haiti (FIPS 10-4 country code)-High Availability | |
| HAARP High Frequency Active Auroral Research Program | |
| HAART Highly Active Anti-Retroviral Therapy | |
| HAI Human Awareness Institute | |
| HAL Hardware Abstraction Layer | |
| HALO High Altitude Low Opening (parachute jump) | |
| HALT Highly Accelerated Life Test, Hungry Angry Lonely Tired | |
| HAM Amateur radio operator | |
| HAMR Heat-assisted magnetic recording | |
| HANS Head And Neck Support (device used in many race cars) | |
| HARM High-speed Anti-Radiation Missile | |
| hat Haitian Creole language (ISO 639-2 code) | |
| HAT (i/a) Highest Astronomical Tide (nautical charts)-Hungarian Automated Telescope | |
| hau Hausa language (ISO 639-2 code) | |
| HAW Heavy Antitank Weapon | |
| HAWK Homing All the Way Killer (air defence system) | |
| HAZ Heat-Affected Zone | |
| HAZMAT Hazardous Materials | |
| HBCD HexaBromoCycloDodecane | |
| HBCI Home Banking Computer Interface | |
| HBO Home Box Office | |
| HBR Harvard Business Review | |
| HBT Heterojunction Bipolar Transistor | |
| HBV Hepatitis B Virus | |
| HCCI Homogeneous Charge Compression Ignition | |
| HCF Highest Common Factor | |
| HCI Human-Computer Interaction/Interface | |
| HCSC Higher Command and Staff Course | |
| HCT Higher Colleges of Technology, tertiary education institution in the United Arab Emirates (UAE) | |
| HD Henry Draper (star catalogue),Hull-Down (armored vehicle target, as opposed to Fully Exposed),High Definition,Huntington's Disease | |
| HDD Hard Disk Drive,High-Density Disk | |
| HDL High-Density Lipoprotein | |
| HDM Human Decision-Making | |
| HDMI High Definition Multimedia Interface | |
| HDR Hard disk recorder,Henningson, Durham & Richardson (founders of the engineering and construction firm now known by their initials),High dynamic range, a term used in both digital imaging and 3D rendering,Hot Dry Rock (experimental geothermal technology),Human Development Report (UN publication) | |
| HDRA Henry Doubleday Research Association | |
| HDTV High-Definition Television | |
| he Hebrew language (ISO 639-1 code) | |
| He Helium | |
| HE High Explosive | |
| HEAT High Explosive Anti-Tank (ammunition) | |
| heb Hebrew language (ISO 639-2 code) | |
| HEBA Hellenic Basketball Clubs Association | |
| HEER High-Explosive Extended Range (ammunition) | |
| HEIC Honourable East India Company | |
| HELOC Home equity line of credit | |
| HEMP High-Altitude Electromagnetic Pulse | |
| HEO High Earth Orbit, Highly Elliptical Orbit | |
| HEOSS High Earth Orbit Space Surveillance | |
| HEP High-Explosive Plastic (ammunition) | |
| HEPA (a/i) High-Efficiency Particulate Air (filter) | |
| her Herero language (ISO 639-2 code) | |
| HESH High-Explosive, Squash-Head (ammunition) | |
| HESV Heavy Engineering Support Vehicle | |
| HETT Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor | |
| HEU Highly Enriched Uranium | |
| Hewitts Hills in England, Wales and Ireland over Two Thousand feet (with topographic prominence of at least 30 m) | |
| Hf Hafnium | |
| HF High Frequency | |
| HFAC Human Factors ("aytchfak") | |
| HFE Human Fertilisation and Embryology (UK Act) | |
| HFE The common-emitter current gain in a BJT transistor (also represented by βF). | |
| HFEA Human Fertilisation and Embryology Authority (UK) | |
| Hg Mercury (Latin Hydrargyrum) | |
| HGC UK Human Genetics Commission | |
| HGF Human Growth Factor | |
| HGTV Home & Garden Television | |
| HHD humanitatum doctor (Latin, "doctor of humanities") | |
| HHB Ha Ha Bonk-The noise made when you laugh your head off. Used instead of LOL... | |
| hi Hindi language (ISO 639-1 code) | |
| HI Hawaii (postal symbol) | |
| HIDACZ High-Density Airspace Control Zone ("high dak zed/zee") | |
| HIH His (or Her) Imperial Highness | |
| HIM His (or Her) Imperial Majesty | |
| HIMAD High to Medium Altitude Air Defence (see also H/MAD) | |
| HIMEZ High Altitude Missile Engagement Zone | |
| HIMYM How I Met Your Mother | |
| hin Hindi language (ISO 639-2 code) | |
| HIPAA U.S. Health Insurance Portability and Accountability Act | |
| Hipparcos HIgh Precision Parallax COllecting Satellite | |
| Hird Hurd of interfaces representing depth (cf. HURD) | |
| HiRISE High Resolution Imaging Science Experiment | |
| HIT Health Information Technology | |
| HIV Human Immunodeficiency Virus | |
| HIWT Hobart Institute of Welding Technology | |
| HJ hic jacet (Latin, "here lies") | |
| HJD Heliocentric Julian Day | |
| HK Hong Kong (ISO 3166 digram; FIPS 10-4 territory code) | |
| HKD Hong Kong dollar (ISO 4217 currency code) | |
| HKG Hong Kong (ISO 3166 trigram) | |
| HKS HyperKinetic Syndrome | |
| hL Hectolitre | |
| HL Holding Line | |
| HLA High Level Architecture (simulation)-Human Leukocyte Antigen | |
| HLL High-Level Language | |
| HLN Headline News | |
| HLOS High Level Output Specification | |
| HLS hoc loco situs (Latin, "laid in this place") | |
| HLVW Heavy Logistics Vehicle, Wheeled | |
| HM Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code) | |
| HMCE Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs) | |
| HMCS Her/His Majesty's Canadian Ship,Her Majesty's Courts Service (former UK agency; succeeded by Her Majesty's Courts and Tribunals Service) | |
| HMD Heard and McDonald Islands (ISO 3166 trigram) | |
| HMF HydroxyMethyl Furfural | |
| HMM Hidden Markov model | |
| HMMWV High Mobility Multipurpose Wheeled Vehicle ("hum-vee"; "hummer") | |
| hmo Hiri Motu language (ISO 639-2 code) | |
| HMO Health maintenance organization | |
| HMP Her Majesty's Prison | |
| HMRC Her/His Majesty's Revenue and Customs | |
| HMS Helmet-mounted display,Her/His Majesty's Ship (Royal Navy) | |
| HMSO Her Majesty's Stationery Office | |
| HMV His Master's Voice | |
| HN Honduras (ISO 3166 digram) | |
| HND Honduras (ISO 3166 trigram) | |
| HNL Honduran lempira (ISO 4217 currency code) | |
| ho Hiri Motu language (ISO 639-1 code) | |
| Ho Holmium | |
| HO Honduras (FIPS 10-4 country code) | |
| HOLLAND Hope Our Love Lasts And Never Dies | |
| HOMES the Great Lakes; Huron, Ontario, Michigan, Erie, Superior | |
| HONY Humans of New York, a photoblog. | |
| HOPI Hybrid Optical and Packet Infrastructure (see Internet2, Abilene Network) | |
| HoReCa Hotel, Restaurant and Catering | |
| HORIZON Hélicoptère d'observation radar et d'investigation sur zone (French, Zone Investigation and Radar Observation Helicopter) | |
| HOSTAC Helicopter Operations from Ships Other Than Aircraft Carriers | |
| HOT Highly Optimised Tolerance | |
| HOTAS Hands on throttle-and-stick | |
| HOV High Occupancy Vehicle | |
| hp horse power | |
| HP Hewlett-Packard-Hindustan Petroleum-Himachal Pradesh (Indian state code) | |
| HPA UK Health Protection Agency | |
| HPCL Hindustan Petroleum Corporation Limited | |
| HPLC High Performance Liquid Chromatography | |
| HPMOR Harry Potter and the Methods of Rationality (work of Harry Potter fan fiction) | |
| HPT High[er] Payoff Target | |
| HPV Human Papilloma Virus | |
| HQ Headquarters-Howland Island (FIPS 10-4 territory code) | |
| HQ High Quality | |
| HQDA Headquarters, Department of the Army | |
| hr Croatian language (ISO 639-1 code) | |
| HR Croatia (FIPS 10-4 country code; ISO 3166 digram-from the country's native name of Hrvatska)-Haryana (Indian state code), Harvard Revised star catalogue,Human Resources | |
| HRBL High-level Representation of Behavior Language (original name of the Herbal language) | |
| HRD Human Resource Development | |
| HRED (U.S. Army Research Laboratory's) Human Research and Engineering Directorate (Aberdeen Proving Ground, Maryland) | |
| HRF High iness Forces | |
| HRH His (or Her) Royal Highness | |
| HRK Croatian kuna (ISO 4217 currency code) | |
| HRM His (or Her) Royal Majesty | |
| HRM Human Resource Management | |
| HRT Hormone Replacement Therapy | |
| hrv Croatian language (ISO 639-2 code) | |
| HRV Croatia (ISO 3166 trigram), High Resolution Visible,HS[edit] | |
| Hs Hassium | |
| HSA A health savings account available to taxpayers in the United States. | |
| HSBC The Hong Kong and Shanghai Banking Corporation | |
| HSC Higher School Certificate | |
| HSM High School Musical | |
| HSMAD Human Science/Modeling and Analysis Data | |
| HSN Home Shopping Network | |
| HSPH Harvard School of Public Health | |
| HSS Health Service Support, High-Speed Steel | |
| HSSI High-Speed Serial Interface | |
| HST see entry | |
| HSV Herpes Simplex Virus,Hue Saturation Value (colour model),HT[edit] | |
| ht Haitian Creole language (ISO 639-1 code) | |
| HT Haiti (ISO 3166 digram), High Temperature,hoc tempore (Latin, "at this time"),hoc titulo (Latin, "under this title") | |
| HTA HyperText Application | |
| HTC High Tech Computer Corporation, original name of the company now known simply as HTC,Horry Telephone Cooperative | |
| HTFU Harden The Fuck Up | |
| HTG Haitian gourde (ISO 4217 currency code) | |
| HTH Hope That Helps | |
| HTI Haiti (ISO 3166 trigram) | |
| HTML HyperText Markup Language | |
| HTR Heated Towel Rail | |
| HTS High-Temperature Superconducting wire | |
| HTTP HyperText Transfer Protocol | |
| HU Hungary (ISO 3166 digram; FIPS 10-4 country code) | |
| HUD (i/a) Head-Up Display-Housing and Urban Development | |
| HUF Hungarian forint (ISO 4217 currency code) | |
| HUHA Head up his/her ass (Marine salute; probably a backcronym) | |
| HUMINT Human Intelligence (military parlance) | |
| hun Hungarian language (ISO 639-2 code) | |
| HUN Hungary (ISO 3166 trigram) | |
| HURD Hird of Unix-Replacing Daemons (cf. Hird) | |
| HVU High Value Unit (military) | |
| HV Upper Volta (ISO 3166 digram; obsolete 1984) | |
| HVAC Heating, ventilation and air conditioning Used in architecture, business and marketing; refers to a building's entire system of heating, moving, or cooling air. | |
| HVAP High Velocity Armour Piercing (ammunition) | |
| HVHF High velocity human factors | |
| HVM High Velocity Missile | |
| HVO Upper Volta (ISO 3166 trigram; obsolete 1984) | |
| HVP | |
| HW Hardware-High Water (nautical charts) | |
| HWM Hardware morphing (computer graphics rendering) | |
| HX IATA code of Hong Kong Airlines-Medical history-Hydrogen halide-Concept automobile by HUMMER | |
| HXB The glycoprotein Tenascian C | |
| hy Armenian language (ISO 639-1 code) | |
| hye Armenian language (ISO 639-2 code) | |
| HYP Halkın Yükselişi Partisi (Turkish: "People's Ascent Party"), a political party in Turkey,Harvard, Yale, Princeton (perennially at or near the top of American university rankings) | |
| HYS Harvard, Yale, Stanford (perennially named as the top three law schools in the U.S.) | |
| hz Herero language (ISO 639-1 code) | |
| Hz Hertz | |
| HZ Haze (METAR Code) | |
| I Iodine-One (in Roman numerals) | |
| ia Interlingua language (ISO 639-1 code) | |
| IA Iowa (postal symbol) | |
| IAAF International Association of Athletics Federations ("International Amateur Athletics Federation" from 1912 to 2001) | |
| IAAL I Am A Lawyer | |
| IAAS Infrastructure-as-a-Service | |
| IAB International Association for Biologicals | |
| IACREOT International Association of Clerks, Recorders, Election Officials, and Treasurers | |
| IAD Ion Assisted Deposition | |
| IADS Integrated Air Defence System | |
| IAEA International Atomic Energy Agency | |
| IAF {i} Industrial Areas Foundation | |
| IAFG Information Assurance Focus Group | |
| IAI International African Institute-Israel Aircraft Industries | |
| IANA Internet Assigned Numbers Authority | |
| IANAL I Am Not A Lawyer | |
| IAQ Indoor air quality-Infrequently Asked Questions | |
| IAS Image Assessment System | |
| IASIP It's Always Sunny in Philadelphia | |
| IATA (a/i) International Air Transport Association | |
| IATF International Automotive Task Force | |
| IATSE International Alliance of Theatrical Stage Employees | |
| IAU International Association of Universities-International Astronomical Union | |
| IAUC International Astronomical Union Circular | |
| IAW In Accordance With | |
| IB International Baccalaureate | |
| IBA Important Bird Area | |
| IBD Inflammatory Bowel Disease | |
| IBDM Information Based Decision Making | |
| IBDS Integrated Biological Detection System-International Business Development Specialist | |
| IBM International Business Machines | |
| ibo Igbo language (ISO 639-2 code) | |
| IBRD International Bank for Reconstruction and Development (part of the World Bank) | |
| IBS Irritable Bowel Syndrome | |
| IC Ice Crystals (METAR Code)-Iceland (FIPS 10-4 country code)-Integrated Circuit-[inner circle] | |
| ICANN Internet Corporation for Assigned Names and Numbers | |
| ICAO International Civil Aviation Organization | |
| ICBM Intercontinental Ballistic Missile | |
| ICBN International Code of Botanical Nomenclature | |
| ICC Integrated Command and Control-International Criminal Court-International Cricket Council-Interstate Commerce Commission-International Chamber of Commerce | |
| ICD Implantable Cardioverter-Defibrillator-Initial Capabilities Document-International Classification of Diseases | |
| ICE (i/a) In case of emergency | |
| ICES (a/i) International Council for the Exploration of the Sea | |
| ICF Intelligent Community Forum | |
| ICHTHYS Iesous Christos, Theou Yios, Soter (Greek, "Jesus Christ, Son of God, Savior") | |
| ICM | |
| ICMP Internet Control Message Protocol | |
| ICNAF International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978) | |
| ICNI Integrated Communication, Navigation, and Identification | |
| ICO Intermediate Circular Orbit | |
| ICP Inductively coupled plasma-Insane Clown Posse | |
| ICPE (a/i) International Conference on Pharmacoepidemiology, the annual conference of the International Society for Pharmacoepidemiology | |
| ICRAF International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002) | |
| ICRISAT (i/a) International Crops Research Institute for the Semi-Arid Tropics | |
| ICRL Individual Component Repair List | |
| ICRS International Celestial Reference System | |
| ICS In-Country Support-Intelligence and Communications Systems-Interim Contractor Support | |
| ICSI Intracytoplasmic Sperm Injection | |
| ICT Information and communication technologies | |
| ICTH Island Closest to Heaven/Hell Final Fantasy VIII | |
| ICV Infantry Carrier Vehicle | |
| ICW In Co-ordination With-Indonesia Corruption Watch- | |
| ICYMI In Case You Missed It | |
| ICZN International Code of Zoological Nomenclature-International Commission on Zoological Nomenclature | |
| id Indonesian language (ISO 639-1 code) | |
| ID Idaho (postal symbol), Identity, Indonesia (FIPS 10-4 country code; ISO 3166 digram), Infantry Division,Intelligent Design,ID10T Error-Idiot User Error (IT help desk inside joke) | |
| IDA U.S. Institute for Defense Analyses,International Development Association (part of the World Bank | |
| IDC International Data Corporation | |
| IDDI I don't do initialisms (see irony) | |
| IDE Integrated Development Environment,Integrated Drive Electronics | |
| IDeA Improvement and Development Agency, the former name of Local Government Improvement and Development in the United Kingdom | |
| IDEA Individuals with Disabilities Education Act (U.S.),International Data Encryption Algorithm,International Design Excellence Awards | |
| IDF Israel Defense Forces,Intel Development Forum,International Dairy Federation | |
| IDGAF I don't give a fuck | |
| IDK I don't know | |
| IDKIBTI I don't know, I'm black, that's it | |
| IDL Interface Definition Language | |
| IDN Indonesia (ISO 3166 trigram) | |
| ido Ido language (ISO 639-2 code) | |
| IDR Indonesian rupiah (ISO 4217 currency code) | |
| IDTS I don't think so | |
| ie Interlingue language (ISO 639-1 code) | |
| IE | |
| IEA International Energy Agency | |
| IEC International Electrotechnical Commission | |
| IED Improvised Explosive Device | |
| IEEE Institute of Electrical and Electronics Engineers ("I triple-E") | |
| IELTS International English Language Testing System | |
| IER Information Exchange Requirement | |
| IET Institution of Engineering and Technology | |
| IET (ii) Initial Entry Training | |
| IETF Internet Engineering Task Force | |
| IEW Intelligence and Electronic Warfare | |
| IFAB International Football Association Board | |
| IFAH International Federation for Animal Health | |
| IFAP International Federation of Agricultural Producers | |
| IFC International Finance Corporation (part of the World Bank)-Independent Film Channel | |
| IFF Identification, Friend or Foe-Individually Fresh Frozen-International Flavors and Fragrances | |
| IFFN Identification, Friend, Foe, or Neutral | |
| IFO Identified Flying Object (see also UFO) | |
| IFOR UN Implementation Force-Institute for Operations Research-International Fellowship of Reconciliation | |
| IFOV Instantaneous Field of View | |
| IFPI International Federation of Phonographic Industries | |
| IFR Instrument Flight Rules | |
| IFRB International Frequency Registration Board | |
| IFV Infantry Fighting Vehicle | |
| ig Igbo language (ISO 639-1 code) | |
| IG Inspector General | |
| IGNOU Indira Gandhi National Open University | |
| IGS International Ground Station | |
| IGY Israeli Gay Youth-International Geophysical Year | |
| IHH Idiopathic Hypogonadotropic Hypogonadism | |
| IHO (i/a) International Hydrographic Organization | |
| IHOP (i/a) International House of Pancakes, the original name of this American restaurant chain ("EYE-hop") | |
| IHR Institute for Historical Review | |
| IHSI Institutum Historicum Societatis Iesu (Jesuit Historical Institute) | |
| ii Sichuan Yi language (ISO 639-1 code) | |
| II Two (in Roman numerals) | |
| IICA Inter-American Institute for Cooperation on Agriculture | |
| IIE Innovative Interstellar Explorer | |
| iii Sichuan Yi language (ISO 639-2 code) | |
| III Three (in Roman numerals) | |
| IIMSS If I May Say So | |
| IIRC If I Remember Correctly, If I Recall Correctly | |
| IISS International Institute for Strategic Studies | |
| IIT Illinois Institute of Technology-Indian Institutes of Technology-Indiana Institute of Technology | |
| IITM Image Institute of Technology & Management-Indian Institute of Technology Madras-Indian Institute of Tropical Meteorology | |
| IJN Imperial Japanese Navy (World War II) | |
| IJWP Interim Joint Warfare Publication | |
| ik Inupiaq language (ISO 639-1 code) | |
| IKEA Ingvar Kamprad (the company's founder), Elmtaryd (the farm where he was born and raised), Agunnaryd (a village and parish near the farm) | |
| iku Inuktitut language (ISO 639-2 code) | |
| IL Illinois (postal symbol)-Israel (ISO 3166 digram) | |
| ILC International Law Commission-International Linear Collider | |
| ILDS Improved Landmine Detection System | |
| ile Interlingue language (ISO 639-2 code) | |
| ILO International Labour Organization | |
| ILRI International Livestock Research Institute | |
| ILS Israeli shekel (ISO 4217 currency code) | |
| ILY IATA code for Islay Airport (Scotland), I Love You [pronounced ILL-LEE] | |
| IM Isle of Man (FIPS 10-4 territory code), Instant Message (Internet speech) | |
| IMA Intermediate Maintenance Activity,Institute of Mathematics and Applications | |
| IMBD International Migratory Bird Day | |
| IMDb Internet Movie Database | |
| IME In My Experience | |
| IMF id music file/id's music format (audio file format),Impossible Missions Force, the protagonist organization in the Mission: Impossible media franchise,International Monetary Fund (the most common use for the initialism) | |
| IMHO In My Humble/Honest Opinion, cf. IMO | |
| IML International Mister Leather | |
| IMLAST International Movement for Leisure Activities in Science and Technology-see MILSET | |
| IMNM -Immune-mediated necrotizing myopathy a rare, but serious ADR of statins [1] | |
| IMNSHO In My Not So Humble Opinion | |
| IMPAC International Merchant Purchase Authorization Card | |
| IMPACT International Medical Products Anti-Counterfeiting Taskforce | |
| IMPATT IMPact Avalanche Transit Time diode | |
| IMPT Institute of Maxillofacial Prosthetists and Technologists | |
| IMR Inzhenernaya Mashina Razgrazhdeniya (Russian Инженерные Машины Разграждения, "Engineer Vehicle Obstacle-Clearing") † | |
| IMRI Industrial Membrane Research Institute,Information Management Research Institute,Institut pour le management de la recherche et de l'innovation (French, "Institute for the Management of Research and Innovation"),International Market Research Information,Intraoperative Magnetic Resonance Imaging | |
| IMRO Internal Macedonian Revolutionary Organization,Irish Music Rights Organisation | |
| IMRL Individual Material iness List | |
| IMS Information Management System,International Meat Secretariat,Ion Mobility Spectrometer | |
| IMSA Illinois Mathematics and Science Academy,International Mind Sports Association,International Motor Sports Association | |
| IMsL International Ms. Leather | |
| IMT Integrated Management Tool | |
| IMU International Mathematical Union | |
| In Indium | |
| IN India (FIPS 10-4 country code; ISO 3166 digram)-Indiana (postal symbol)-Infantry | |
| ina Interlingua language (ISO 639-2 code) | |
| INA -Immigration and Nationality Act | |
| INAS International Near-Earth Asteroid Survey | |
| INC | |
| INCITS InterNational Committee for Information Technology Standards | |
| ind Indonesian language (ISO 639-2 code) | |
| IND India (ISO 3166 trigram) | |
| inet the Internet | |
| INDIGO (U.S.) INtelligence DIvision Gaming Operation | |
| INFORMS (U.S.) Institute for Operations Research and the Management Sciences | |
| INFOSEC Information Security | |
| INLA Irish National Liberation Army | |
| INMARSAT International Maritime Satellite organization | |
| INR Indian rupee (ISO 4217 currency code) | |
| INRI (a/i) Iesus Nazarenus Rex Iudæorum (Latin, "Jesus of Nazareth, King of the Jews") | |
| INRIA Institut national de recherche en informatique et en automatique | |
| INS Immigration and Naturalization Service | |
| InSAR Interferometric synthetic aperture radar | |
| INST Information Standards and Technology | |
| INTSUM Intelligence Summary | |
| INTERFET International Force for East Timor | |
| io Ido language (ISO 639-1 code) | |
| IO British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code) | |
| IOC Initial Operational Capability,Intergovernmental Oceanic Commission,International Olympic Committee,International Ornithological Congress | |
| IOLTA Interest on Lawyer Trust Accounts (charitable funding mechanism, especially for legal aid) | |
| IOM Iowa, Ohio, Michigan (soybean origin),Institute of Medicine,International Organisation for Migration,Isle of Man | |
| IONA Islands of the North Atlantic (alternate name for Great Britain, Ireland, the Isle of Man, and related islands) | |
| IOT British Indian Ocean Territory (ISO 3166 trigram) | |
| IOU "I Owe You" (Promissory note) | |
| IP | |
| IPA India Pale Ale-International Phonetic Alphabet-Isopropyl alcohol | |
| IPB Intelligence Preparation of the Battlefield | |
| IPCC Intergovernmental Panel on Climate Change-Independent Police Complaints Commission | |
| ipk Inupiaq language (ISO 639-2 code) | |
| IPL Inferior Parietal Lobule | |
| IPN Instytut Pamieci Narodowej (Polish, "Institute for National Memory") | |
| IPO Initial Public Offering | |
| IPR In Progress Review-Intellectual Property Rights-Intelligence Production Requirement | |
| IPT Integrated Product/Project Team | |
| IPTS Institute for Prospective Technological Studies | |
| IPTV Internet Protocol TeleVision | |
| IPW Interrogation of Prisoners of War | |
| iq idem quod (Latin, "the same as") | |
| IQ Intelligence Quotient-Iraq (ISO 3166 digram) | |
| IQD Iraqi dinar (ISO 4217 currency code) | |
| Ir Iridium | |
| IR Infrared,Intelligence requirement (military), Iran (FIPS 10-4 country code; ISO 3166 digram),Iran Air (IATA alpha code) see entry for more | |
| IRA Individual Retirement Account,Irish Republican Army (any of several armed groups dedicated to Irish republicanism) | |
| IRAD Internal Research and Development | |
| IRAN (I) Inspect and Repair As Necessary | |
| IRAS Infrared Astronomical Satellite | |
| IRB International Rugby Board, a former name of World Rugby | |
| IRBM Intermediate Range Ballistic Missile | |
| IRC International Red Cross,International Reply Coupon,Internet Relay Chat | |
| IREA Intermountain Rural Electric Association | |
| IRL Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League, former name of the motorsport governing body now known as INDYCAR,In real life | |
| IRM Illinois Railway Museum,Inzhenernaya Razvedyvatelnaya Mashina (Russian Инженерная Разведывательная Машина, "Engineer Reconnaissance Vehicle") † | |
| IRN Iran (ISO 3166 trigram) | |
| IRINN Islamic Republic of Iran News Network | |
| IRO International Refugee Organisation | |
| IRQ Iraq (ISO 3166 trigram) | |
| IRR Iranian rial (ISO 4217 currency code) | |
| IRS U.S. Internal Revenue Service | |
| IRSN Institut de radioprotection et de sûreté nucléaire (French, "Institute for Radiation Protection and Nuclear Safety") | |
| IRST Infra-red Search and Track | |
| is Icelandic language (ISO 639-1 code) | |
| IS Iceland (ISO 3166 digram),Israel (FIPS 10-4 country code) | |
| ISA Individual Savings Account,Industry Standard Architecture,Instruction Set Architecture,International Seabed Authority | |
| ISAAA International Service for the Acquisition of Agri-biotech Applications | |
| ISAF International Sailing Federation,International Security Assistance Force | |
| ISAR Inverse SAR (Synthetic Aperture Radar) | |
| ISB Intermediate Staging Base | |
| ISBN International Standard Book Number (ISO 2108) | |
| ISCCP International Satellite Cloud Climatology Project | |
| ISCII Indian Standard Code for Information Interchange | |
| ISDN Integrated Services Digital Network | |
| ISEF Intel International Science and Engineering Fair | |
| ISEN Internet Search Environment Number | |
| ISF Internal Security Force | |
| ISI Indian Standards Institute, former name of the Bureau of Indian Standards,Inter-Services Intelligence (Pakistan),Islamic State of Iraq, an umbrella organization for several Iraqi insurgent groups | |
| ISIL (i/a) Islamic State of Iraq and the Levant | |
| ISIS (i/a) Institute for Science and International Security,Islamic State of Iraq and Syria | |
| ISK Icelandic krona (ISO 4217 currency code) | |
| isl Icelandic language (ISO 639-2 code) | |
| ISL Iceland (ISO 3166 trigram) | |
| ISLN International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell) | |
| ISM Industrial, scientific or medical, Interstellar medium | |
| ISMB International Society of Matrix Biologists | |
| ISMC Intelligent Sounding Meaningless Conversation | |
| ISO In Search Of, International Organization for Standardization (from the Greek ίσος, isos, meaning "equal") | |
| ISOGP Indian Society of Orthodontics for General Practitioners [2] | |
| ISP International Standardized Profile,Internet Service Provider,Information Systems Professional | |
| ISPE (a/i) International Society for Pharmacoepidemiology | |
| ISR Intelligence, Surveillance and Reconnaissance, Israel (ISO 3166 trigram) | |
| ISRO Indian Space Research Organisation | |
| ISS International Shorebird Survey (North America),International Space Station | |
| ISSCR International Society for Stem Cell Research | |
| ISSN International standard serial number (ISO 3297) | |
| IST Information System Technology,UCF Institute for Simulation and Training | |
| ISTAR Intelligence, Surveillance, Target Acquisition, and Reconnaissance | |
| ISTC Institute of Scientific and Technical Communications (UK) | |
| ISTS Intel Science Talent Search | |
| ISU Integrated Sight Unit,International Skating Union,IT[edit] | |
| it Italian language (ISO 639-1 code) | |
| IT InferoTemporal (neurophysiology),Information Technology, Italy (FIPS 10-4 country code; ISO 3166 digram) | |
| ita Italian language (ISO 639-2 code) | |
| ITA Italy (ISO 3166 trigram) | |
| ITAG Inertial Terrain-Aided Guidance | |
| ITALY I'll Truly Always Love You | |
| ITAS Improved Target Acquisition Sight | |
| ITC InferoTemporal Cortex (neurophysiology) | |
| ITCZ (i/p) Intertropical Convergence Zone | |
| ITEC Information Technology Exposition & Conference | |
| ITEMS Interactive Tactical Environment Management System | |
| ITER International Thermonuclear Experimental Reactor | |
| ITF International Tennis Federation | |
| ITK In The Know | |
| ITN Independent Television News (British) | |
| ITS Incompatible Time-sharing System,Individual Training Standards | |
| ITT International Telephone and Telegraph (U.S.) | |
| ITTO International Tropical Timber Organization | |
| ITU Intent-to-Use,International Telecommunication Union (International Telegraph Union 1865-1932),IU[edit] | |
| iu Inuktitut language (ISO 639-1 code) | |
| IUCN International Union for the Conservation of Nature and Natural Resources (World Conservation Union) | |
| IUD Intrauterine device (https://www.plannedparenthood.org/learn/birth-control/iud) | |
| IUI Intrauterine insemination (http://americanpregnancy.org/infertility/intrauterine-insemination/) | |
| IUPAC International Union of Pure and Applied Chemistry (pronounced "eye-yoo-pac") | |
| IUPUI Indiana University-Purdue University Indianapolis | |
| IUSS Integrated Undersea Surveillance System-Integrated Unit Simulation System-International Union of Soil Sciences | |
| IV Côte d'Ivoire (FIPS 10-4 country code; from Ivory Coast)-Four (in Roman numerals)-IntraVenous (as in intravenous drip or intravenous therapy) | |
| IVD Internet Video Device, intra vas device | |
| Iveco Industrial Vehicles Corporation | |
| IVF In Vitro Fertilisation | |
| IVI Interchangeable Virtual Instrument | |
| IVIS (i/a) Inter-Vehicle Information System | |
| IVL Inter-Visibility Line | |
| IVM In Vitro [Oocyte] Maturation | |
| IVO In Vicinity Of | |
| IW Impact Wrestling | |
| IW Information Warfare | |
| IWARS Infantry Warrior Simulation | |
| IWC International Whaling Commission | |
| IWT Illegal Wildlife Trade | |
| IWW Industrial Workers of the World | |
| IX Nine (in Roman numerals) | |
| IXT IntraText digital library; IntraText lexical hypertext | |
| IY Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993) | |
| IZ Iraq (FIPS 10-4 country code) | |
| J Joule | |
| J1 Joint [Manpower &] Personnel Directorate | |
| J2 Joint Intelligence Directorate | |
| J2EE Java 2 Platform, Enterprise ion | |
| J2ME Java 2 Platform, Micro ion | |
| J2SE Java 2 Platform, Standard ion | |
| J3 Joint Operations Directorate | |
| J4 Joint Logistics Directorate | |
| J5 Joint Strategic Plans & Policy Directorate | |
| J6 Joint Information Technology Directorate (Command, Control, Communications & Computer Systems) | |
| J7 Joint Operational Plans & Interoperability Directorate | |
| J8 Joint Force Structure, Resources, & Assessment Directorate | |
| J9 Joint Public Affairs Directorate (Civilian-Military Cooperation) | |
| ja Japanese language (ISO 639-1 code) | |
| JA Japan (FIPS 10-4 country code) | |
| Jabodetabek Jakarta, Bogor, Depok, Tangerang, Bekasi (urban agglomeration of Jakarta) | |
| JAFT Just A Field Test | |
| JAG Judge Advocate General Corps (military law) | |
| JAL Japan Airlines | |
| JALLC Joint Analysis and Lessons Learned Centre (NATO) | |
| JAM Jamaica (ISO 3166 trigram) | |
| JAMA Journal of the American Medical Association | |
| JANET Joint Academic Network | |
| JANUS | |
| JATO Jet-Assisted Take-Off | |
| jav Javanese language (ISO 639-2 code) | |
| JB Junior Branch | |
| JB Jail Bait | |
| JBFSA Joint Blue Force Situational Awareness | |
| JCATS Joint Conflict And Tactical Simulation ("djay-catts") | |
| JCDB Joint Common Data Base | |
| JCDS Joint Chiefs of the Defence Staff | |
| JCIDS Joint Capabilities Integration and Development System | |
| JCIET Joint Combat Identification Evaluation Team | |
| JCL Job Control Language | |
| JCMOTF Joint Civil-Military Operations Task Force | |
| JCP Java Community Process | |
| JCPM Java Child Process Manager-Jesus Christ Prison Ministry | |
| JCS Joint Chiefs of Staff | |
| JCW Juggalo Championship Wrestling | |
| JD Jack Daniel's (whiskey),Julian day,Juris Doctor (Latin, "doctor of jurisprudence") | |
| JDAM (a/i) Joint Direct Attack Munition ("djay-dam") | |
| JDBC Java Data Base Connectivity | |
| JDCC UK Joint Doctrine and Concepts Centre, now the Development, Concepts and Doctrine Centre (DCDC) | |
| JDEM Joint Dark Energy Mission | |
| JDK Java Development Kit | |
| JDL Jewish Defense League | |
| JDM Japanese domestic market, referring specifically to automobiles and parts,Java Data Mining,Joint design manufacturing,JE[edit] | |
| JE Jersey (FIPS 10-4 territory code) | |
| JEB James Ewell Brown (Stuart),John Ellis Bush | |
| JEDP Jahwist, Elohist, Deuteronomist, Priestly (according to the documentary hypothesis, the sources of the Torah) | |
| JEE Java Platform, Enterprise ion | |
| JEFX Joint Expeditionary Force eXperiment | |
| JEPD Jahwist, Elohist, Priestly, Deuteronomist,Jointly Exhaustive, Pairwise Disjoint | |
| JET Joint European Torus | |
| JEZ Joint Engagement Zone | |
| JFACC Joint Force Air Component Commander | |
| JFACTSU U.K. Joint Forward Air Controller Training and Standards Unit | |
| JFC Joint Force Commander | |
| JFCOM U.S. Joint Forces Command ("jiff-comm") | |
| JFET (i/a) Junction Field-Effect Transistor ("jay-fett") | |
| JFK John Fitzgerald Kennedy or the airport named after him. | |
| JFLCC Joint Force Land Component Commander | |
| JFMCC Joint Force Maritime Component Commander | |
| JFO Journal of Field Ornithology | |
| JFSOCC Joint Force Special Operations Component Commander | |
| JFTX Joint Field Training Exercise | |
| JH Japan Highway Public Corporation | |
| JH Jharkhand (Indian state code) | |
| JI | |
| JIB Joint Information Bureau | |
| JIC Joint Intelligence Centre | |
| JINI Java Intelligent Network Infrastructure | |
| JITC Joint Interoperability Test Command | |
| JIVE Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe | |
| JJAP Japanese Journal of Applied Physics | |
| JK Jedi Knight-Just Kidding-Spanair (IATA airline designator)-Jammu & Kashmir (Indian state code) | |
| JL Japan Airlines (IATA airline designator) | |
| JLA Justice League of America | |
| JM Jamaica (FIPS 10-4 country code; ISO 3166 digram) | |
| JMD Jamaican dollar (ISO 4217 currency code) | |
| JMS Java Message Service | |
| JN Jan Mayen Island (FIPS 10-4 territory code) | |
| JNI Java Native Interface | |
| JNLP Java Network Launch Protocol | |
| JO Jordan (FIPS 10-4 country code; ISO 3166 digram) | |
| JOA (a/i) Joint Operations Area | |
| JOD Jordanian dinar (ISO 4217 currency code) | |
| Jofa Jonssons fabriker (Swedish, "Jonsson's Factories") | |
| JOPES Joint Operations Planning and Execution System | |
| JOR Jordan (ISO 3166 trigram) | |
| JOTS Joint Operations Tactical System | |
| JSP Joint Services Publication | |
| JP Japan (ISO 3166 digram)-Justice of the Peace | |
| JPEG Joint Photographic Experts Group ("jay-peg") | |
| JPL Jet Propulsion Laboratory | |
| jpn Japanese language (ISO 639-2 code) | |
| JPN Japan (ISO 3166 trigram) | |
| JPOW | |
| JPY Japanese yen (ISO 4217 currency code) | |
| JQ Jetstar Airways (IATA airline designator)- | |
| JRA Japanese Red Army-Joint Rear Area | |
| JRDF Joint Rapid Deployment Forces | |
| JRE Java Runtime Environment | |
| JREF James Randi Educational Foundation | |
| JROC Joint Requirements Oversight Council | |
| JROCM JROC Memorandum | |
| JRRF Joint Rapid Reaction Force | |
| JRSAI Journal of the Royal Society of Antiquaries of Ireland | |
| JSAF Joint Semi-Automated Forces ("jay-saff") | |
| JSAP Japan Society of Applied Physics | |
| JSCSC Joint Services Command and Staff College | |
| JSD juris scientiae doctor (Latin, "doctor of science of law") | |
| JSEAD Joint Suppression of Enemy Air Defence (see SEAD) | |
| JSF Joint Strike Fighter | |
| JSIMS Joint Simulation System | |
| JSOA Joint Special Operations Area | |
| JSOTF Joint Special Operations Task Force | |
| JSP JavaServer Page | |
| JSR Java Specification Request | |
| JSS Joint Support Ship Project | |
| JSTARS Joint Surveillance Target Attack Radar System ("djay-starz") | |
| JT Johnston Atoll (ISO 3166 digram; obsolete 1986)-Junior Technician (RAF) | |
| JTAG Joint Test Action Group ("djay-tag") | |
| JTAGS Joint Tactical Ground Station ("djay-tagz") | |
| JTC Joint Training Confederation | |
| JTF Joint Task Force | |
| JTFEX Joint Task Force Exercise | |
| JTIDS Joint Tactical Information Distribution System ("djay-tidz") | |
| JTLS Joint Theater Level Simulation | |
| JTMD Joint Theatre Missile Defence | |
| JTN Johnston Atoll (ISO 3166 trigram; obsolete 1986) | |
| JTRS (a/i) Joint Tactical Radio System ("jitters") | |
| JU Juan de Nova Island (FIPS 10-4 territory code) | |
| JUGFET JUnction Gate Field-Effect Transistor | |
| JUICE JUpiter ICy Moon Explorer | |
| JUO Joint Urban Operations | |
| jv Javanese language (ISO 639-1 code) | |
| JV Joint Venture-Junior Varsity | |
| JVM Java Virtual Machine | |
| JW Jehovah's Witnesses | |
| JWARS Joint Warfare System (simulation) | |
| JWP Joint Warfare Publication | |
| JWST James Webb Space Telescope | |
| JY Japanese Yen | |
| JZ Joint Zone | |
| k Kilo- | |
| K Kelvin-Potassium (Latin Kalium)-Tanker (aircraft designation code) | |
| K9 Canine Police Unit | |
| ka Georgian language (ISO 639-1 code) | |
| kA Kiloampere | |
| Ka Kamov Design Bureau | |
| KA Knowledge Acquisition-Karnataka (Indian state code) | |
| KAF (i/a) Kandahar Air Field | |
| kal Kalaallisut language (ISO 639-2 code) | |
| kan Kannada language (ISO 639-2 code) | |
| KANUKOKA Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, "Greenlandic Communities Association") | |
| KARNAC Knowledge Aided Retrieval in Activity Context | |
| KARR Knight Automated Roving Robot (Knight Rider character) | |
| kas Kashmiri language (ISO 639-2 code) | |
| kat Georgian language (ISO 639-2 code) | |
| KATUSA Korean Augmentation To United States Army | |
| kau Kanuri language (ISO 639-2 code) | |
| kaz Kazakh language (ISO 639-2 code) | |
| KAZ Kazakhstan (ISO 3166 trigram) | |
| KBE Knight Commander of the Order of the British Empire | |
| KBO Kuiper Belt Object | |
| KBVB Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association) | |
| kC Kilocoulomb | |
| KCK Kansas City, Kansas,Koma Civakên Kurdistan (Kurdish, "Union of Communities in Kurdistan") | |
| KCL King's College London | |
| KCMO Kansas City, Missouri (pronounced "K-C-Moe") | |
| KCS Kansas City Southern Railway (AAR reporting mark) | |
| KD Kawasaki Disease-Kraft Dinner | |
| KE Kenya (FIPS 10-4 country code; ISO 3166 digram), Kinetic Energy,Knowledge Engineering | |
| KEDO Korean Peninsula Energy Development Organization | |
| KEN Kenya (ISO 3166 trigram) | |
| KERA Kentucky Education Reform Act (of 1990) | |
| kerma Kinetic Energy Released in MAterial / in MAtter / per unit MAss | |
| KES Kenyan shilling (ISO 4217 currency code), Killer Elite Squad (Japanese professional wrestling stable) | |
| KESR Kent and East Sussex Railway. | |
| KET Kentucky Educational Television, Key English Test,KF[edit] | |
| kF Kilofarad | |
| KFC Kentucky Fried Chicken | |
| KFOR UN Kosovo Force | |
| KFUPM King Fahd University of Petroleum & Minerals | |
| kg Kilogram-Kongo language (ISO 639-1 code) | |
| KG Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram) | |
| KGB Komitet Gosudarstvennoy Bezopasnosti (Russian "Committee for State Security") (1954-1991) | |
| KGO Knight of the Guelphic Order of Hanover | |
| KGS Kyrgyz som (ISO 4217 currency code) | |
| KGZ Kyrgyzstan (ISO 3166 trigram) | |
| kH Kilohenry | |
| KH Cambodia (ISO 3166 digram) | |
| khm Khmer language (ISO 639-2 code) | |
| KHL Kontinental Hockey League | |
| KHM Cambodia (ISO 3166 trigram) | |
| KHR Cambodian riel (ISO 4217 currency code) | |
| KHz Kilohertz | |
| ki Gikuyu language (ISO 639-1 code) | |
| Ki Kibi | |
| KI Kiribati (ISO 3166 digram) | |
| KIA Killed In Action | |
| KIDS Knowledge-based Integrated Design System | |
| kik Gikuyu language (ISO 639-2 code), common typo for LOL | |
| kin Kinyarwanda language (ISO 639-2 code) | |
| kir Kyrgyz language (ISO 639-2 code) | |
| KIR Kiribati (ISO 3166 trigram) | |
| KISS Keep It Simple, Stupid / Keep It Short and Simple-Korean Intelligence Support System | |
| KITECH Korean Institute of Industrial Technology | |
| KITT Knight Industries Two Thousand-Knight Industries Three Thousand | |
| KIT Keep In Touch | |
| kj Kuanyama language (ISO 639-1 code) | |
| kJ Kilojoule | |
| kk Kazakh language (ISO 639-1 code) | |
| kK Kilokelvin | |
| KK Kabushiki kaisha (Japanese for "Stock Company", found in the legal names of countless Japanese corporations),Košarkarski klub (Slovenian), Košarkaški Klub (Croatian and Serbian in Latin script), Кошаркашки клуб (Serbian Cyrillic), Krepšinio Klubas (Lithuanian); all mean "Basketball Club", as in KK Olimpija, KK Cibona, KK Partizan, and KK Atletas | |
| KKK Ku Klux Klan | |
| kl Kalaallisut language (ISO 639-1 code) | |
| kL Kilolitre | |
| KL Kuala Lumpur-Kerala (Indian state code) | |
| KLENOT KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope | |
| KLM Koninklijke Luchtvaart Maatschappij (Dutch "Royal Dutch Airlines") | |
| KLOC Kilo Lines Of Code | |
| KLS Kleine-Levin syndrome,Košarkaška liga Srbije (Latin) or Кошаркашка лига Србије (Cyrillic) (Serbian, "Basketball League of Serbia"),Kuala Lumpur Sentral,KM[edit] | |
| km Khmer language (ISO 639-1 code)-Kilometre | |
| KM Comoros-Knowledge Management | |
| KMF Comoro franc (ISO 4217 currency code) | |
| KMFDM Kein mitleid für die mehrheit (German "No pity for the majority" music band) | |
| KMR Kwajalein Missile Range | |
| kn Kannada language (ISO 639-1 code) | |
| kN Kilonewton | |
| KN Democratic People's Republic of Korea (FIPS 10-4 country code)-Saint Kitts and Nevis (ISO 3166 digram) | |
| KNA Saint Kitts and Nevis (ISO 3166 trigram) | |
| KNVB Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association) | |
| ko Korean language (ISO 639-1 code) | |
| KO Knocked Out | |
| kom Komi language (ISO 639-2 code) | |
| kon Kongo language (ISO 639-2 code) | |
| kor Korean language (ISO 639-2 code) | |
| KOR Republic of Korea (ISO 3166 trigram) | |
| KP Kim Possible | |
| KPMG Klynveld, Peat, Marwick, Goerdeler | |
| KPNO Kitt Peak National Observatory | |
| KPV Krupnokaliberniy Pulemet Vladimorova (Russian КПВТ Крупнокалиберный Пулемет Владимирова, "Large-Calibre Machinegun Vladimirov")[1] | |
| KPVT Krupnokaliberniy Pulemet Vladimorova Tankoviy (Russian КПВТ Крупнокалиберный Пулемет Владимирова Танковый, "Large-Calibre Machinegun Vladimirov Tank")[2] | |
| KPW North Korean won (ISO 4217 currency code) | |
| KQ Kenya Airways (IATA airline designator)-Kingman Reef (FIPS 10-4 territory code) | |
| kr Kanuri language (ISO 639-1 code) | |
| Kr Krypton | |
| KR Kiribati (FIPS 10-4 country code)-Republic of Korea (ISO 3166 digram) | |
| KRW South Korean won (ISO 4217 currency code) | |
| ks Kashmiri language (ISO 639-1 code),Kilosecond | |
| kS Kilosiemens | |
| KS Kansas (postal symbol),Republic of Korea (FIPS 10-4 country code) | |
| KSC Kennedy Space Center | |
| KSI Killed or Seriously Injured | |
| KSM Korean Service Medal,Khalid Sheikh Mohammed | |
| KSU Kansas State University | |
| kT Kilotesla | |
| KT Christmas Island (FIPS 10-4 territory code)-Knight of the Order of the Thistle-Knights Templar | |
| KTS Knight of the Tower and Sword (of Portugal) | |
| ku Kurdish language (ISO 639-1 code) | |
| KU Kuwait (FIPS 10-4 country code) | |
| kua Kuanyama language (ISO 639-2 code) | |
| KUL Katholieke Universiteit Leuven (Flemish, Catholic University of Leuven) | |
| kur Kurdish language (ISO 639-2 code) | |
| KUW Kuwait (UNDP country code, IOC and FIFA trigram, but not ISO 3166) | |
| kv Komi language (ISO 639-1 code) | |
| kV Kilovolt | |
| KV Kosovo | |
| KV Kavminvodyavia (IATA airline designator)- | |
| KVM Keyboard, Video, Mouse switch | |
| KVT Killer-Victim Table (military simulations) | |
| kw Cornish language (ISO 639-1 code) | |
| kW Kilowatt | |
| KW Kuwait (ISO 3166 digram) | |
| KWB Kids' WB! | |
| KWD Kuwaiti dinar (ISO 4217 currency code) | |
| KWT Kuwait (ISO 3166 trigram) | |
| KX Cayman Airways (IATA airline designator) | |
| ky Kyrgyz language (ISO 639-1 code) | |
| KY Cayman Islands (ISO 3166 digram),Kentucky (postal symbol) | |
| KYD Cayman Islands dollar (ISO 4217 currency code) | |
| KZ Kazakhstan (FIPS 10-4 country code; ISO 3166 digram) | |
| KZN KwaZulu-Natal | |
| KZT Kazakh tenge (ISO 4217 currency code) | |
| L Fifty (in Roman numerals)- | |
| Latin Left-Litre-Low (transmissions) | |
| la Latin language (ISO 639-1 code) | |
| La Lanthanum | |
| LA Laos (FIPS 10-4 country code; ISO 3166 digram),Louisiana (postal symbol), Los Angeles | |
| LAAS Local Area Augmentation System,Los Angeles Astronomical Society | |
| LAB Logistics Assault Base | |
| LabVIEW Laboratory Virtual Instrumentation Engineering Workbench | |
| LACMA (a/i) Los Angeles County Museum of Art | |
| LAD Laser Aiming Device | |
| LADW Local Air Defence Warning | |
| LAESI Local Authority & Emergency Service Information | |
| LAK Laotian kip (ISO 4217 currency code) | |
| LAMP (multiple meanings) | |
| LAN Local Area Network | |
| LANL Los Alamos National Laboratory | |
| lao Lao language (ISO 639-2 code) | |
| LAO Laos (ISO 3166 trigram) | |
| LAPD Los Angeles Police Department | |
| LAR Light Armoured Reconnaissance,Logistics Assistance Representative | |
| LARC Livermore Advanced Research Computer (cf. LLNL) | |
| LARP Live-Action Role-Playing | |
| LAS McCarran International Airport (Las Vegas, Nevada) | |
| Laser Light Amplification by Stimulated Emission of Radiation (cf. Maser) | |
| lat Latin language (ISO 639-2 code) | |
| LAT (i/a) Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org) | |
| LATA Local Access Transport Area | |
| LATCH Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars) | |
| lav Latvian language (ISO 639-2 code) | |
| LAV Land Assault Vehicle,Light Armoured Vehicle,Lymphadenopathy-Associated Virus,LAW]-Light Antitank Weapon | |
| LAX Los Angeles International Airport, The Latin American Xchange (professional wrestling),LB[edit] | |
| lb pound (Latin librum),Luxembourgish language (ISO 639-1 code) | |
| LB Lebanon (ISO 3166 digram) | |
| LBH Light Battlefield Helicopter,Lyman-Birge-Hopfield bands | |
| LBJ Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson | |
| LBN Lebanon (ISO 3166 trigram) | |
| LBNL Lawrence Berkeley National Laboratory | |
| LBP Lebanese pound (ISO 4217 currency code) | |
| LBR Liberia (ISO 3166 trigram) | |
| LBS Location-based service | |
| lbs pounds (plural form of lb, see above) | |
| LBT Large Binocular Telescope | |
| LBW Leg Before Wicket | |
| LBY Libya (ISO 3166 trigram) | |
| LC Line of Contact-Saint Lucia (ISO 3166 digram) | |
| LCA Saint Lucia (ISO 3166 trigram) | |
| LCC Land Component Commander | |
| LCCP Light Contingency Communications Package | |
| LCD Liquid Crystal Display | |
| LCE Leaving Certificate Examination-Load Carrying Equipment-London Commodity Exchange | |
| LCM Least/Lowest Common Multiple | |
| LCol Lieutenant-Colonel (Canada, UK) | |
| LCS League of Legends Championship Series | |
| LD Laser Designator,Limited Deployment,Line of Departure | |
| LDA Lateral Drift Apparatus (paratroops) | |
| LDAP (a/i) Lightweight Directory Access Protocol (pronounced "ell-dap") | |
| LDC Lesser Developing/Developed Country | |
| LDL Low-Density Lipoprotein | |
| LDMOS (i/a) Laterally diffused MOS transistor ("ell-dee-moss") | |
| LDS Latter-day Saint (also "Latter Day Saint"); also used as an abbreviation by The Church of Jesus Christ of Latter-day Saints,Liberal Democracy of Slovenia | |
| LDV Local Defence Volunteers (British Home Guard) | |
| LDW Lane Departure Warning (ADAS) | |
| LE Lebanon (FIPS 10-4 country code) | |
| LEC Local Exchange Carrier | |
| LED Light-Emitting Diode | |
| Legs level emotion gad speed | |
| LEGAD Legal Advice | |
| LEMOSS Long-Endurance MObile Submarine Simulator | |
| LEN Large Extension Node | |
| LEO Low Earth orbit | |
| LEP Large Electron-Positron collider | |
| LER Loss-Exchange Ratio | |
| LEU Low-Enriched Uranium | |
| LF Low Frequency | |
| LFO Low Frequency Oscillation / Oscillator | |
| LFTR Liquid fluoride thorium reactor | |
| lg Luganda (ISO 639-1 code) | |
| LG Latvia (FIPS 10-4 country code) | |
| LGB Lesbian, Gay, Bisexual,Laser-guided bomb, self-explanatory | |
| LGBT Lesbian, Gay, Bisexual, Transgender | |
| LGLO Love God, Love Others | |
| LGM Little Green Men | |
| LGS Landsat Ground Station | |
| LH Lithuania (FIPS 10-4 country code)-Luteinising Hormone | |
| LHC Large Hadron Collider | |
| LHD litterarum humaniorum doctor (Latin, "doctor of humane letters (humanities)"),Left-Hand Drive (automobile) | |
| LHS Left Hand Side | |
| li Limburgish language (ISO 639-1 code) | |
| Li Lithium | |
| LI Fifty-one (in Roman numerals)-Liberia (FIPS 10-4 country code)-Liechtenstein (ISO 3166 digram) | |
| LIBOR London Interbank Offered Rate | |
| LIBS Laser Induced Breakdown Spectroscopy | |
| LIE Liechtenstein (ISO 3166 trigram) | |
| LIFO Last In, First Out | |
| LIGO Laser Interferometer Gravitational-Wave Observatory | |
| LIJ Los Ingobernables de Japon (Spanish, "The Ungovernables of Japan"), Japanese professional wrestling stable | |
| lim Limburgish language (ISO 639-2 code) | |
| lin Lingala language (ISO 639-2 code) | |
| LINEAR Lincoln Near-Earth Asteroid Research | |
| LISA Laser Interferometer Space Antenna | |
| lit Lithuanian language (ISO 639-2 code) | |
| LITAS Low Intensity Two Colour Approach System (aviation) | |
| LIVE Liquid Inertial Vibration Eliminator | |
| LJ La Jolla,Larry Johnson (both the American football and basketball players of that name),LaserJet (HP printer brand),Library Journal,Linux Journal,LiveJournal,Ljubljana,Lord Justice of Appeal, Sierra National Airlines (IATA code) | |
| LJJ Lord Justices of Appeal | |
| LK Sri Lanka (ISO 3166 digram) | |
| LKA Sri Lanka (ISO 3166 trigram) | |
| LKL Lietuvos krepšinio lyga (Lithuanian, "Lithuanian Basketball League") | |
| LKR Sri Lanka rupee (ISO 4217 currency code) | |
| LKR4 Linkwitz-Riley 4th order (audio crossover type) | |
| LL Land Line (telephone)- | |
| LLAD Low Level Air Defence | |
| LLB Legum Baccalaureus (Latin: Bachelor of Laws) | |
| LLC Limited Liability Company | |
| LLGC Llyfrgell Genedlaethol Cymru (National Library of Wales)-London Lesbian and Gay Centre | |
| LLLTV Low-Light Level Television | |
| LLNL Lawrence Livermore National Laboratory | |
| LLP Limited Liability Partnership | |
| LLTI Limiting Long-Term Illness-Long Lead Time Item | |
| LLTR Low-Level Transit Route | |
| LMAO Laughing My Ass Off (Internet shorthand) | |
| LMFAO Laughing My F**king Ass Off (Internet shorthand, electro-hop duo) | |
| LMB Lick My Balls | |
| LMN (a/i) Lifetime Movie Network | |
| LMS London Mathematical Society-London, Midland and Scottish (Railway) | |
| LMS Like My Status (Internet shorthand) | |
| LMV () | |
| ln Lingala language (ISO 639-1 code),Natural logarithm | |
| LNB Liga Nacional de Básquet (Rioplatense Spanish, "National Basketball League"; top Argentine league),Ligue Nationale de Basketball (French, "National Basketball League"; the organization that operates France's top two leagues, and the unrelated top league of Switzerland),Low-Noise Block (Satellite dish) | |
| LNER London and North Eastern Railway railway operator from 1923 until 1947 in the United Kingdom | |
| LNG Liquefied Natural Gas | |
| LNO Liaison Officer | |
| LNR Ligue Nationale de Rugby (French, "National Rugby League") | |
| lo Lao language (ISO 639-1 code) | |
| LO Slovakia (FIPS 10-4 country code) | |
| LOA Limit Of Advance | |
| LOC (a/i) Level of Operational Capability,Limited Operational Capability,Lines Of Code,Lines Of Communication,see entry | |
| LOD Legion of Doom, referring to any of the following:,A group of DC Comics supervillains,A hacker group,A group of Philadelphia Flyers ice hockey players in the 1990s,The Road Warriors, a professional wrestling tag team that used the name "Legion of Doom" when performing in the WWF/WWE,Limit of Detection-see Detection limit | |
| LoD Lines of Development (UK) | |
| LOFAR Low Frequency Analysis and Recording | |
| LOGPAC Logistics Package | |
| LOL Laughing Out Loud (Internet shorthand) | |
| LOMEZ Low Altitude Missile Engagement Zone | |
| LONEOS Lowell Observatory Near-Earth-Object Search | |
| LOOGY (p/a) Lefty One-Out GuY, a sometimes pejorative nickname for the left-handed specialist in baseball | |
| loq loquitur (Latin, " he speaks") | |
| LORTID LOng Range Target IDentification | |
| LOS Line Of Sight | |
| LOSAT Line-Of-Sight Anti-Tank (missile) | |
| LOTA Licentiate of the Orthodontic Technicians Association | |
| LOTIS Livermore Optical Transient Imaging System | |
| LOTS Logistics Over-The-Shore | |
| LP Linkin Park,Linkup Point,Listening Post,Long Playing (record),Louisiana Pacific (cf. LP Field, a former name of the sports venue now known as Nissan Stadium) | |
| LPC Linear Predictive Coding | |
| LPD Landing Platform Dock (Navy hull classification),Low Probability of Detection | |
| LPG Liquefied Petroleum Gas (cf. LNG) | |
| LPI Low Probability of Intercept | |
| LPS Landsat Processing System, LipoPolySaccharide,LQ[edit] | |
| LQ Palmyra Atoll (FIPS 10-4 territory code) | |
| Lr Lawrencium | |
| LR Liberia (ISO 3166 digram) | |
| LRAD Long Range Acoustic Device ("ell-rad") | |
| LRC Logistics iness Center | |
| LRD Liberian dollar (ISO 4217 currency code) | |
| LRF Laser rangefinder-Low iness Forces | |
| LRGW Long-Range Guided Weapon | |
| LRICBM Limited Range ICBM | |
| LRIP Low Rate Initial Production | |
| LRP Logistics Release Point | |
| LRPE Long-Range Planning Element | |
| LRS Long Range Surveillance | |
| LRU Line-Replaceable Unit | |
| LS Landing Support, Lesotho (ISO 3166 digram),Liechtenstein (FIPS 10-4 country code), locus sigilli (Latin, "place of the seal") | |
| LSAT Law School Admission Test (often pronounced as "el-SAT") | |
| LSD Landing Ship, Dock (Navy hull classification),librae, solidii, denarii (Latin: Pounds, shillings and pence),lyserg-saüre-dietylamid (German "lysergic acid diethylamide") | |
| LSE Least Squares Estimate/Error,London School of Economics,London Stock Exchange | |
| LSI Large-Scale Integration | |
| LSIF Labour Sponsored Investment Fund | |
| LSL Lesotho loti (ISO 4217 currency code) | |
| LSND Liquid Scintillator Neutrino Detector | |
| LSO Lesotho (ISO 3166 trigram) | |
| LSST Large Synoptic Survey Telescope | |
| LST Landing Ship, Tank (World War II; also known, not entirely affectionately, as "Large Slow Target") | |
| LSVW Light Support Vehicle, Wheeled | |
| lt Lithuanian language (ISO 639-1 code) | |
| Lt Lieutenant | |
| LtC Lieutenant-Colonel (U.S.) | |
| LT Lesotho (FIPS 10-4 country code)-Lithuania (ISO 3166 digram) | |
| LTC Long-Term Costing | |
| Ltd Limited | |
| LTDP Long-Term Defence Plan | |
| LTG Lieutenant General-Lightning (METAR Code) | |
| LTI Linear Time-Invariant | |
| LTL Lithuanian litas (ISO 4217 currency code) | |
| LTM Acronym for Laughing To Myself | |
| LTO Long Term Occasional (substitute teachers) | |
| LTP Long-Term Potentiation | |
| LTU Lithuania (ISO 3166 trigram) | |
| ltz Luxembourgish language (ISO 639-2 code) | |
| lu Tshiluba language (ISO 639-1 code) | |
| Lu Lutetium | |
| LU Acronym Love You | |
| LU Loonatics Unleashed | |
| lub Tshiluba language (ISO 639-2 code) | |
| LUCA Last Universal Common Ancestor | |
| lug Luganda (ISO 639-2 code) | |
| LUG Linux User Group | |
| LULU Locally Unwanted Land Use (urbanism) | |
| LUT Limited User Test (ing)-Local User Terminal | |
| LUVW Light Utility Vehicle, Wheeled | |
| LUX Luxembourg (ISO 3166 trigram) | |
| lv Latvian language (ISO 639-1 code) | |
| LV Las Vegas, Latvia (ISO 3166 digram), Launch Vehicle,Leading Vehicle, Leave, Left Ventricle,Level Valve,Linking Verb,Liverpool Victoria | |
| LVA Latvia (ISO 3166 trigram) | |
| LVAD Left Ventricular Assist Device, Low-Velocity Airdrop | |
| LVEF Left Ventricular Ejection Fraction | |
| LVL Latvian lats (ISO 4217 currency code) | |
| Lw Lawrencium (obsolete 1963) | |
| LW Land Warrior-Low Water (nautical charts) | |
| LWR Laser warning receiver | |
| LWRC Land Warfare Resources Corporation | |
| LWS Land Warrior System | |
| LX Luxembourg (amateur radio ITU prefix)-Swiss International Air Lines (IATA code) | |
| LX Electrics (theatrical term) | |
| LY Libya (FIPS 10-4 country code; ISO 3166 digram)-Lithuania (amateur radio ITU prefix) | |
| LYAO Laugh Your Ass Off | |
| LYD Libyan dinar (ISO 4217 currency code) | |
| LYLAS Love You Like A Sister | |
| LZ Bulgaria (amateur radio ITU prefix)-Landing Zone | |
| m Metre-Milli | |
| M Mega--One thousand (in Roman numerals) | |
| mA Milliampere | |
| Ma Megaannum | |
| MA Madagascar (FIPS 10-4 country code), Marijuana Anonymous, Master of Arts,Massachusetts (postal symbol),Megaampere,Morocco (ISO 3166 digram) | |
| MAA Mathematical Association of America | |
| MAAC Metro Atlantic Athletic Conference | |
| MAC Macau (ISO 3166 trigram), U.S. Military Airlift Command (1966-1992),Mid-American Conference | |
| MACA Military Aid to the Civil Authorities | |
| MACE Multi-Agent Computing Environment | |
| MACHO MAssive Compact Halo Object | |
| MAD Magnetic Anomaly Detector, Moroccan dirham (ISO 4217 currency code), Mutual Assured Destruction | |
| MADD Mothers Against Drunk Driving,MyoAdenylate Deaminase Deficiency, Multiply-Add | |
| MAF Maintenance Action Form | |
| MAFF Ministry of Agriculture, Forestry and Fisheries (various countries) | |
| MAGIC Major Atmospheric Gamma-ray Imaging Cherenkov (telescope) | |
| MAGNETAR [permanent dead link] Metaprogrammable AGent NETwork ARchitecture[permanent dead link] | |
| MAGTF Marine Air-Ground Task Force | |
| mah Marshallese language (ISO 639-2 code) | |
| Mahasz Magyar Hanglemezkiadók Szövetsége (Hungarian, "Association of Hungarian Record Companies") | |
| mal Malayalam language (ISO 639-2 code) | |
| MALD Miniature Air-Launched Decoy | |
| MANPADS MAN-Portable Air Defence System | |
| MANPRINT MANpower and PeRsonnel INTegration | |
| MAO (i/a) Molėtų astronomijos observatorija (Moletai Astronomical Observatory), MonoAmine Oxidase | |
| MAOI Monoamine oxidase inhibitor | |
| MAPS Monitoring Avian Productivity and Survivorship | |
| MAQS Museum of the American Quilter's Society ("max") | |
| mar Marathi language (ISO 639-2 code) | |
| MAR Morocco (ISO 3166 trigram) | |
| MarBEF Marine Biodiversity and Ecosystem Functioning | |
| MARC MAchine able Cataloging (often also defined as MAchine able Code),Mailing list ARChive,Maryland Area Regional Commuter train service,Massachusetts Animal Rights Coalition,Mid-America Regional Council | |
| MARCENT United States Marine Forces Central Command | |
| MARFORCC Marine Force Component Commander | |
| MARRS Martyn Young, Alex Ayuli, Rudy Tambala, Russell Smith, and Steve Young (British electronic music act) | |
| MAS NATO Military Agency for Standardization | |
| MASAS Monte Agliale Supernovae and Asteroid Survey | |
| Maser Microwave Amplification by Stimulated Emission of Radiation | |
| MASH Mobile Army Surgical Hospital | |
| MASINT Measurement And Signature Intelligence | |
| MATREX Modeling Architecture for Technology, Research & EXperimentation | |
| MATS U.S. Military Air Transport Service (1948-1966) | |
| MAVS (a/i) Mobile Artillery Vehicle System | |
| MAW Malawi (IOC trigram, but not FIFA or ISO 3166) | |
| MAX Meta-reasoning Architecture for "X" | |
| MB Manitoba (postal symbol),Martinique (FIPS 10-4 territory code),Medal of Bravery (Canada) | |
| MBA Main Battle Area,Main Belt Asteroid,Masters of Business Administration | |
| MBI Moody Bible Institute | |
| MBBL (U.S. Armor Center) Mounted Battlespace Battle Laboratory | |
| MBCC Migratory Bird Conservation Commission (U.S.) | |
| MBCS Multi-Byte Character Set | |
| MBE Member of the Order of the British Empire, Multistate Bar Examination (U.S.) | |
| MBIDST Member of the British Institute of Dental and Surgical Technologists | |
| MBM Meat and Bone Meal | |
| MBSE Model-based systems engineering | |
| mbsf metres below sea floor,[1][2] a depth convention used in paleontology and oceanography | |
| MBT Main Battle Tank | |
| MBTA Massachusetts Bay Transportation Authority-Migratory Bird Treaty Act (U.S.) | |
| MBTI Myers-Briggs Type Indicator | |
| mC Millicoulomb | |
| MC Macau (FIPS 10-4 territory code), Master of Ceremonies, Megacoulomb, Military Cross (bravery award), Monaco (ISO 3166 digram), Mortar Carrier, Eleven Hundred (in Roman numerals) | |
| MCA Master of Computer Applications,Micro Channel Architecture,MultiChannel Analyzer,Music Corporation of America, the original name of the now-defunct MCA Inc. | |
| MCC Marylebone Cricket Club,Mission Control Center,Motor Control Center,Movement Control Centre | |
| MCD Minimal Cerebral Dysfunction,Minor civil division (U.S. Census term) | |
| MCDL Model Composition Definition Language | |
| MCFT Modified Compression Field Theory | |
| MCG Melbourne Cricket Ground | |
| MCI Microwave Communications, Inc. | |
| MCIS Mellon Collie and the Infinite Sadness | |
| MCM Mine Counter-Measures | |
| MCMV Mine Counter-Measure Vessel | |
| MCNC Microelectronics Center of North Carolina, Mixing Condensation Nucleus Counter | |
| MCO Major Combat Operation, Monaco (ISO 3166 trigram), Movement Control Officer | |
| MCP Maintenance Collection Point,Male Chauvinist Pig | |
| MCR My Chemical Romance | |
| MCSF Marine Corps Security Forces | |
| MCT Movement Control Team | |
| MCTIS Mounted Co-operative Target Identification System | |
| MCU Marine Corps University,Marvel Cinematic Universe,Medium close-up (camera direction in British TV scripts), Microcontroller unit, Milk clotting units,Ming Chuan University,Minimum coded unit (digital imaging),Multipoint control unit,Municipal Credit Union (New York),MD[edit] | |
| Md Mendelevium | |
| MD Fifteen Hundred (in Roman numerals),Maryland (postal symbol), Medicinae Doctor (Doctor of Medicine/Medical Doctor),Mentioned in Dispatches (military), Moldova (FIPS 10-4 country code; ISO 3166 digram) | |
| MDA Main Defensive Action/Area, Moldova (ISO 3166 trigram)-Muscular Dystrophy Association | |
| MDF Main distribution frame,Medium-density fiberboard | |
| MDG Madagascar (ISO 3166 trigram), UN Millennium Development Goal | |
| MDL Moldovan leu (ISO 4217 currency code) | |
| MDM Michigan Dartmouth MIT telescope consortium,Master data management | |
| MDMA MethyleneDioxy-MethylAmphetamine (also known as "Ecstasy") | |
| MDNA Madonna's 12th studio album title (2012) | |
| MDO Membership Driven Organisation | |
| MDP Markov Decision Process | |
| MDT Mountain Daylight Time (UTC−6 hours) | |
| MDS | |
| MDV Maldives (ISO 3166 trigram) | |
| MDW Chicago Midway International Airport in Chicago (IATA airport code), Military District of Washington, Minnesota, Dakota and Western Railway (AAR reporting mark),ME[edit] | |
| Me Messerschmitt | |
| ME Maine (postal symbol), Mechanical engineer[ing],Medical examiner,Middle East, Middle East Airlines (IATA code), Memory Effect-Myalgic Encephalomyelitis | |
| MEA Maine Educational Assessment,Middle East Airlines,Millennium Ecosystem Assessment,Minimum en route altitude,Mono-ethanol Amine,Multilateral Environmental Agreement | |
| MEAC Mid-Eastern Athletic Conference (ME-ac) | |
| MEC Maine Central Railroad,Manta, Ecuador (IATA location identifier), Model European Council,Mountain East Conference,Mountain Equipment Co-op | |
| MECC Minnesota Educational Computing Consortium (later Corporation, dissolved 1999) | |
| MECCA Milwaukee Exposition Convention Center and Arena, a former name for the sports venue now known as UW-Milwaukee Panther Arena | |
| MECO Main engine cutoff (NASA code for point in Space Shuttle assent when three main engines are shut down prior to External Tank (ET) separation) | |
| MEDEVAC Medical evacuation | |
| MEDLI Mars Science Laboratory Entry, Descent, and Landing Instrumentation, Medical & Scientific Libraries of Long Island, Model for Effluent Disposal using Land Irrigation | |
| MEDS Mission Essential Data Set | |
| MEF U.S. Marine Expeditionary Force,Minimum essential facility,Mission essential force | |
| MEG MagnetoEncephaloGraphy | |
| MEI Matsushita Electric Industrial Co., Ltd. | |
| MEK Magyar Elektronikus Konyvtar,Message encryption key, methyl ethyl ketone, Mujahideen al-Khalq | |
| MEL Maya Embedded Language,Michigan Electronic Library | |
| MELT Metallic Line/Loop Test (ing) | |
| MEM Message Exchange Mechanism, Microelectromechanical | |
| MEMS Microelectromechanical System | |
| MEO Medium earth orbit,Most efficient organization | |
| MEP Mechanical Electrical Plumbing,Member of the European Parliament,Missions étrangères de Paris (French for "Paris Foreign Missions"),Model European Parliament | |
| MER Mars Exploration Rover | |
| MERL Mitsubishi Electric Research Laboratories | |
| MES Marconi Electronic Systems,Medium Edison screw | |
| MESSENGER MErcury Surface, Space ENvironment, GEochemistry and Ranging | |
| MET Meteorological, Middle European Time | |
| METAR [Meteorological] Aviation Routine weather report | |
| METL (i/a) Mission Essential Task List ("mettle") | |
| METOC Meteorological and Oceanographic | |
| MEU U.S. Marine Expeditionary Unit,Maximum Expected Utility | |
| MeV Megaelectronvolt | |
| MEV Medical Evacuation Vehicle,Musica Elettronica Viva | |
| MEX Mexico (ISO 3166 trigram) | |
| MEZ Missile Engagement Zone | |
| MES Manufacturing Execution Systems | |
| mF Millifarad | |
| MF Mayotte (FIPS 10-4 territory code),Megafarad | |
| MFSB Mother, Father, Sister, Brother (1970s Philadelphia studio musicians collective) | |
| MFT Managed file transfer,Master File Table,Mean field theory,Media Foundation Transform,Micro Four Thirds (camera design standard),MG[edit] | |
| mg Malagasy language (ISO 639-1 code)-Milligram | |
| Mg Magnesium-Megagram | |
| MG Machine Gun-Madagascar (ISO 3166 digram)-Major General-Mongolia (FIPS 10-4 country code)-Morris Garage | |
| MGA Malagasy ariary (ISO 4217 currency code) | |
| MGB Medium Girder Bridge, Motor Gun Boat | |
| MGM Metro Goldwyn Mayer-Montgomery, Alabama (Airport Code) | |
| MGPAM My Gym Partner's a Monkey | |
| MGS Mobile Gun System | |
| mh Marshallese language (ISO 639-1 code) | |
| mH Millihenry | |
| MH Marshall Islands (postal symbol; ISO 3166 digram)-Megahenry-Montserrat (FIPS 10-4 territory code) | |
| MHC Major Histocompatibility Complex | |
| MHHW Mean Higher High Water (nautical charts) | |
| MHL Marshall Islands (ISO 3166 trigram) | |
| MHLW Mean Higher Low Water (nautical charts) | |
| MHRA (UK) Medicines and Healthcare products Regulatory Agency | |
| MHW Mean High Water (nautical charts) | |
| MHWN Mean High Water Neaps (nautical charts) | |
| MHWS Mean High Water Springs (nautical charts) | |
| MHz Megahertz | |
| mi Māori language (ISO 639-1 code) | |
| Mi Mebi | |
| MI Malawi (FIPS 10-4 country code),Michigan (postal symbol),Midway Islands (ISO 3166 digram; obsolete 1986), Military Intelligence | |
| MIA Missing In Action | |
| MIAA Maryland Interscholastic Athletic Association,Massachusetts Interscholastic Athletic Association,Michigan Intercollegiate Athletic Association,Mid-America Intercollegiate Athletics Association | |
| MIB Men In Black,Mint In Box (Internet auction/trading listings) | |
| MIC Military Industrial Complex | |
| MICLIC Mine Clearing Line Charge | |
| MICOM Missile Command | |
| MICV Mechanised Infantry Combat Vehicle | |
| MID Midway Islands (ISO 3166 trigram; obsolete 1986) | |
| MIDI Musical Instrument Digital Interface | |
| MIDAS Man-machine Integration Design and Analysis System | |
| MIDS Multi-Function Information Distribution System | |
| MIFC Military Industrial Financial Complex | |
| MIFG Shallow Fog (METAR Code) | |
| MIFPC Military Industrial Financial Pharmaceutical Complex | |
| MIKE Monitoring of Illegal Killing of Elephants | |
| MIL Man-In-the-Loop | |
| MILAN Missile d´infanterie léger antichar (French, "Anti-Tank Light Infantry Missile") | |
| MILC Mirrorless interchangeable-lens camera | |
| MILES Multiple Integrated Laser Engagement System (live combat simulation) | |
| MILF Moro Islamic Liberation Front, Mother I'd Like to Fuck | |
| MILSATCOM Military Satellite Communications | |
| MILSET Mouvement International pour le Loisir Scientifique Et Technique (French, "International Movement for Leisure Activities in Science and Technology") | |
| MILSTRIP Military Standard Requisitioning and Issue Procedure DLMSO MILSTRIP Manual | |
| MIMAROPA Mindoro, Marinduque, Romblon, Palawan (a region in the Philippines) | |
| MIMOSA MIcroMeasurements Of Satellite Acceleration | |
| MIMPT Member of the Institute of Maxillofacial Prosthetists and Technologists | |
| MIP Multilateral Interoperability Programme,Multiple Identity Poster | |
| MIPC Military Industrial Pharmaceutical Complex | |
| MIRA MILAN Infra-Red Acquisition (thermal sight) | |
| MIRV Multiple Independent Reentry Vehicle | |
| MIS Management Information Systems,Museum Information System | |
| MISREP Mission Report | |
| MISSI Multilevel Information System Security Initiative | |
| MIT Massachusetts Institute of Technology,methylisothiazoline,Milli Istihbarad Teskilati (Intelligence service of Turkey) | |
| MITL Man-In-The-Loop | |
| MITS see entry | |
| mJ Millijoule | |
| MJ Megajoule, Michael Jordan | |
| MJD Modified Julian Day | |
| MJP Military Judgement Panel | |
| mk Macedonian language (ISO 639-1 code) | |
| mK Millikelvin | |
| MK Air Mauritius (IATA code),Macedonia (ISO 3166 digram; FIPS 10-4 country code), Mandalskameratene (Norwegian football club), Megakelvin, Milton Keynes,Missionary Kids,Mortal Kombat (1992 video game),Mortal Kombat (2011 video game) | |
| mkd Macedonian language (ISO 639-2 code) | |
| MKD Macedonian denar (ISO 4217 currency code),Republic of Macedonia (ISO 3166 trigram) | |
| MKG Michael Kidd-Gilchrist (American basketball player) | |
| MKO Mojahedin-e-Khalq Organization (Persian, "People's Mujahedin of Iran") | |
| MKS Metre-Kilogram-Second (system of units), MKS Inc. software company | |
| MKSA Metre-Kilogram-Second-Ampere (system of units) | |
| MKT Missouri-Kansas-Texas Railroad (1865-1989),Mortal Kombat Trilogy,ML[edit] | |
| ml Malayalam language (ISO 639-1 code) | |
| mL Millilitre | |
| ML Mali (FIPS 10-4 country code; ISO 3166 digram), Maximum Likelihood, Megalitre | |
| MLA Martial Law Administration of Bangladesh,Master of Landscape Architecture,Medical Library Association,Member of Legislative Assembly,Modern Language Association,Mutual legal assistance treaty,Myelosis Leucemica Acuta | |
| MLB Major League Baseball | |
| MLC Member of the Legislative Council (in India) | |
| MLE Maximum likelihood estimation | |
| mlg Malagasy language (ISO 639-2 code) | |
| MLHW Mean Lower High Water (nautical charts) | |
| MLI Mali (ISO 3166 trigram) | |
| MLK Martin Luther King, Jr. | |
| MLL Major League Lacrosse | |
| MLLW Mean Lower Low Water (nautical charts) | |
| MLP My Little Pony | |
| MLRS Multiple-Launch Rocket System | |
| MLS Major League Soccer,Multiple Listing Service,Multilevel security | |
| MLSE Maple Leaf Sports & Entertainment (owner of several Toronto-based sports teams),Maximum likelihood sequence estimation | |
| MLSR Missing, Lost or Stolen Report | |
| mlt Maltese language (ISO 639-2 code) | |
| MLT Malta (ISO 3166 trigram) | |
| MLVW Medium Logistics Vehicle, Wheeled | |
| MLW Mean Low Water (nautical charts) | |
| MLWN Mean Low Water Neaps (nautical charts) | |
| MLWS Mean Low Water Springs (nautical charts) | |
| mm Millimetre | |
| Mm Megametre | |
| MM Military Medal-Myanmar (ISO 3166 digram)-Two Thousand (in Roman numerals) | |
| MMA Mixed martial arts-Moving Mechanical Assembly | |
| MMC Machinist's Mate, Chief (USN rating)-Materiel Management Centre | |
| MMCM Machinist's Mate, Master Chief (USN rating)-Magnetic Mine Counter Measure | |
| MMCS Machinist's Mate, Senior Chief (USN rating) | |
| MMEV Multi-Mission Effects Vehicle | |
| MMI Man-Machine Interface | |
| MMI McLean Meditation Institute | |
| MMIC Mindfulness & Meditation Instructor, Certified | |
| MMIC McLean Meditation Institute Certified | |
| MMI Magical MonkeyZ Inc. | |
| MMIO Memory-mapped I/O | |
| MMK Burmese kyat (ISO 4217 currency code) | |
| MMO Massively Multiplayer Online (computer game) | |
| MMOR Master of Management in Operations Research | |
| MMORPG Massively multiplayer online role-playing game | |
| MMPR Mighty Morphin Power Rangers | |
| MMR Measles, Mumps and Rubella vaccine-Myanmar (ISO 3166 trigram) | |
| MMS Multimission Modular Spacecraft | |
| MMU Manchester Metropolitan University-Manned Manoeuvring Unit | |
| MMW Millimetre Wave (radar, from "mm Wave") | |
| mn Mongolian language (ISO 639-1 code) | |
| mN Millinewton | |
| Mn Manganese | |
| MN Meganewton-Minnesota (postal symbol)-Monaco (FIPS 10-4 country code)-Mongolia (ISO 3166 digram) | |
| MNB Multinational Brigade | |
| MND Motor Neurone Disease-Multinational Division | |
| MNE Montenegro (ISO 3166 trigram) | |
| MNG Multiple-image Network Graphics-Mongolia (ISO 3166 trigram) | |
| MNMF Multi-National Maritime Force | |
| MNP Northern Mariana Islands (ISO 3166 trigram) | |
| MNS Mission Needs Statement | |
| MNT Molecular nanotechnology-Mongolian tugrik (ISO 4217 currency code) | |
| mo Moldovan language (ISO 639-1 code) | |
| Mo Molybdenum | |
| MO Macau (ISO 3166 digram)-Medical Officer-Missouri (postal symbol)-modus operandi (Latin, "mode of operation")-Morocco (FIPS 10-4 country code) [mutual oral] | |
| MOA Museum of Art (Brigham Young University) | |
| MOAB Massive Ordnance Air Blast (official)-Mother Of All Bombs (slang) | |
| MOB Man Over Board-Marching Owl Band-Movable Object Block | |
| MOC Macedonian Orthodox Church-Measure Of Capability-Mission Operations Centre-My Own Creation (Lego) | |
| MOCAS Mechanization Of Contract Administration Services | |
| MoD Ministry of Defence (United Kingdom) and various other countries | |
| MOD Magneto-optical disc-Masters of Deception-Minimum Object Distance-Multiple Organ Dysfunction | |
| MoDAF Ministry of Defence Architecture Framework ("moh-daff") | |
| modem Modulator-Demodulator | |
| ModSAF Modular Semi-Automated Forces (military simulation) | |
| Moe Marvel of entertainment | |
| MOE Measure Of Effectiveness | |
| MOF (a/i) Ministry of Finance (Japan) | |
| MOFA (a/i) Ministry of Foreign Affairs (Japan) | |
| MOH (a/i) Medal of Honor-Music On Hold | |
| MOID Minimum Orbital Intersection Distance | |
| MOJWA Movement for Oneness and Jihad in West Africa | |
| mol Moldovan language (ISO 639-2 code)-mole (unit) | |
| MOLO Mobile Other Licensed Operator (UK) | |
| MoM Multiple of the median | |
| MOM Message-oriented middleware | |
| MOM Master's Degree in Oriental medicine | |
| MoMA Museum of Modern Art (NYC) | |
| mon Mongolian language (ISO 639-2 code) | |
| MOND Modified Newtonian Dynamics | |
| MOO Measure Of Outcome | |
| MOOTW Military Operations Other Than War ("moot-double-you") | |
| MOP Macau pataca (ISO 4217 currency code)-Measure Of Performance | |
| MOPE Ministry of Population and Environment (Nepal)-Most Oppressed People Ever (politics) | |
| MOPP (i/a) Mission-Oriented Protective Posture | |
| MORP Meteorite Observation and Recovery Project | |
| MORS Military Operations Research Society | |
| MOS Military Occupational Specialty-Mit Out Sound / Motor Only Sync-Mobile Object System-Model Output Statistics-Multiplayer Online Services-Mean Opinion Score | |
| MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor | |
| MOSS MObile Submarine Simulator-Moving Object Support System | |
| MOT Ministry of Transport (UK) | |
| MOTA Member of the Orthodontic Technicians Association | |
| MOTESS Moving Object and Transient Event Search System | |
| MOTO Mail Order / Telephone Order-Master of the obvious | |
| MOU Memorandum Of Understanding | |
| MOUT Military Operations in Urban[ized] Terrain | |
| MOVES Modeling, Virtual Environments, and Simulation Institute | |
| MOW Maintenance of way (also MW) | |
| MOZ Mozambique (ISO 3166 trigram) | |
| MP Magic points-Mauritius (FIPS 10-4 country code)-Member of Parliament-Military Police-Missouri Pacific-Northern Mariana Islands (postal symbol; ISO 3166 digram) | |
| mPa Millipascal | |
| MPa Megapascal | |
| MPA Maritime Patrol Aircraft-Master of Public Administration | |
| MPAA Motion Picture Association of America | |
| MPC Minor Planet Center-Minor Planet Circular | |
| MPC Military Payment Certificate | |
| MPEC Minor Planet Electronic Circular | |
| MPEG Motion Pictures (Coding) Experts Group | |
| MPEV Multi-Purpose Engineering Vehicle | |
| MPF Maritime Prepositioning Force | |
| MPFC Medial PreFrontal Cortex | |
| MPG Miles Per Gallon | |
| MPMC Medial PreMotor Cortex | |
| MPSI Member of the Pharmaceutical Society of Ireland | |
| MPSoC MultiProcessor System-on-Chip | |
| MPSRON Maritime Propositioning Ship Squadron | |
| MQ Martinique (ISO 3166 digram)-Midway Islands (FIPS 10-4 territory code) | |
| mr Marathi language (ISO 639-1 code) | |
| MR Mauritania (FIPS 10-4 country code; ISO 3166 digram) | |
| MRAV Multi-Role Armoured Vehicle | |
| MRBM Medium Range Ballistic Missile | |
| MRC Maintenance Requirements Card | |
| MRD Motorized Rifle Division | |
| MRE Meal y to Eat (U.S. military rations) | |
| MRGO Mississippi River-Gulf Outlet Canal (also referred to as MR-GO or "Mr. Go") | |
| MRGW Medium-Range Guided Weapon | |
| mri Māori language (ISO 639-2 code) | |
| MRI Magnetic Resonance Imaging | |
| MRL Multiple Rocket Launcher | |
| MRO Maintenance, Repair and Operating,Mars Reconnaissance Orbiter, Mauritanian ouguiya (ISO 4217 currency code) | |
| MRPharmS Member of the Royal Pharmaceutical Society (Great Britain) | |
| MRR Maximum Rock and Roll,Minimum-Risk Route,My Restaurant Rules | |
| MRS Magnetic Resonance Spectroscopy | |
| MRSA Methicillin-resistant Staphylococcus aureus | |
| MRT Mass Rapid Transit — used as either an official or unofficial name for metro systems in Singapore, Kaohsiung, Bangkok, Taipei, Chennai, and Delhi, Mauritania (ISO 3166 trigram) | |
| MRTFB U.S. Major Range and Test Facility Base | |
| ms Malay language (ISO 639-1 code),Millisecond | |
| mS Millisiemens | |
| Ms Megasecond | |
| MS mano sinistra (Latin, "left hand"), manuscript, Master of Science, Megasiemens, Microsoft (sometimes M$), Mississippi (postal symbol),Montserrat (ISO 3166 digram), Multiple Sclerosis,M&S, Modelling & Simulation,Marks & Spencer | |
| MSA Malay language (ISO 639-2 code) | |
| MSB Main Support Battalion,Most Significant Bit (or Byte) | |
| MSD Minimum Safe Distance | |
| MSDB Multi Source Data Base | |
| MSDE Maryland State Department of Education, Microsoft Data[base] Engine,Microsoft SQL Server 2000 Desktop Engine, Military Scenario Development Environment,Mission Simulation Dynamic Engine | |
| MSDL Military Scenario Definition Language | |
| MSE Multiple Subscriber Element | |
| MSEC Message Security Encryption Code ("emm-sec") | |
| MSG MonoSodium Glutamate,Madison Square Garden (either the 1879, 1890, 1925, or current versions of the venue) | |
| MSH Medium Support Helicopter,Mount Saint Helens | |
| MSI Micro-Star International, Multispectral imagery | |
| MSIE Microsoft Internet Explorer,Master of Science in Industrial Engineering | |
| MSL Mars Science Laboratory,Mean Sea Level, Missile | |
| MSLP Mean Sea Level Pressure | |
| MSM Mainstream media, Men who have sex with men,Mount St Mary's School | |
| MSN Microsoft Network,Master of Science in Nursing | |
| MSNBC Microsoft National Broadcasting Company Cable news channel (see also msnbc.com) | |
| MSO Multiple System Operator | |
| MSP Member of the Scottish Parliament | |
| MSPA Migrant and Seasonal worker Protection Act, MS Paint Adventures | |
| MSPB Merit Systems Protection Board | |
| MSR Main Supply Route,Module Service Record, Montserrat (ISO 3166 trigram), Motor Schlepp Regulung,Mountain Safety Research (outdoor supplies manufacturer) | |
| MSSA Member of the Order of the Star of South Africa, Methicillin-susceptible Staphylococcus aureus, Military Selective Service Act, Military-style semi-automatic, Mind Sports South Africa, Montreal Student Space Associations,MSSA Chemical Company, formerly known as Métaux Spéciaux. | |
| MST Madison Symmetric Torus,Mountain Standard Time (UTC−7 hours),MST3K or MST3k-Mystery Science Theater 3000 | |
| MSU Michigan State University,Montana State University,Mountain State University,Lomonosov Moscow State University (Russia, a.k.a. MGU),MT[edit] | |
| mt Maltese language (ISO 639-1 code) | |
| mT Millitesla | |
| Mt Meitnerium | |
| MT Malta (FIPS 10-4 country code; ISO 3166 digram),Megatesla,Montana (postal symbol), Motor Transport (military) | |
| MTA Metropolitan Transportation Authority (Boston) (now Massachusetts Bay Transportation Authority),Metropolitan Transportation Authority | |
| MTBF Mean time between failures | |
| MtF Male-to-female transsexual | |
| MTF Magnetized target fusion,Medical Treatment Facility,Message Text Format,Modulation transfer function (optics) | |
| MTG Magic: The Gathering | |
| MTL Maltese lira (ISO 4217 currency code), Mean Tide Level (nautical charts)* MTM-Methods-Time Measurement | |
| MTOE Modified Table of Organization and Equipment ("emm-toe") | |
| MTP Maritime Tactical Publication,Materiel Transfer Plan,Mission Training Plan | |
| MTQ Martinique (ISO 3166 trigram) | |
| MTR Main and Tail Rotor (helicopter type),Mass Transit Railway (Hong Kong metro system),Military-Technological Revolution | |
| MTS Maintenance Training System,Manitoba Telephone System and Manitoba Telecom Services, former names of Bell MTS,Michigan Terminal/Timesharing System,Movement Tracking System,Multichannel television sound,Multi-Technical Services | |
| MTT Methylthiazol tetrazolium (assay) | |
| MTU Tankovei Mostoukladchik (Russian Танковый Мостоукладчик, "Tank Bridge-Layer") † | |
| MTV MainosTeleVisio (Finnish commercial TV company),Music TeleVision | |
| MTVL Mobile Tracked Vehicle, Light | |
| MTWS MAGTF Tactical Warfare System | |
| MU Mauritius (ISO 3166 digram)-Oman (FIPS 10-4 country code; from Muscat) | |
| MUA Meritorious Unit Award-Military Utility Assessment | |
| MUR Mauritius rupee (ISO 4217 currency code) | |
| MUS Mauritius (ISO 3166 trigram) | |
| mV Millivolt | |
| MV Maldives (FIPS 10-4 country code; ISO 3166 digram)-Megavolt-Motor Vehicle-Motor Vessel | |
| MVC Missouri Valley Conference | |
| MVFC Missouri Valley Football Conference | |
| MVNO Mobile virtual network operator | |
| MVP Most Valuable Player | |
| MVR Maldivian rufiyaa (ISO 4217 currency code) | |
| mW Milliwatt | |
| MW Maintenance of way (also MOW), Malawi (ISO 3166 digram), Medium Wave (radio), Megawatt, Mountain West (Conference) (formal initialism since July 2011) | |
| MWC Maritime Warfare Centre (various nations),Mountain West Conference (still used informally, although the league has adopted "MW") | |
| MWESH Machismo Wizards Extended SHelter (operating system) | |
| MWI Malawi (ISO 3166 trigram) | |
| MWK Malawian kwacha (ISO 4217 currency code) | |
| MWOA Mount Wilson Observatory Association | |
| MWR Morale, Welfare, and Recreation | |
| MWTB Mounted Warfare Test Bed | |
| MX Mail Exchange-Mexico (FIPS 10-4 country code; ISO 3166 digram)-Missile eXperimental | |
| MXN Mexican peso (ISO 4217 currency code) | |
| my Burmese language (ISO 639-1 code) | |
| MY Malaysia (FIPS 10-4 country code; ISO 3166 digram) | |
| mya Burmese language (ISO 639-2 code)-million years ago | |
| MYOB Mind Your Own Business | |
| MYR Malaysian ringgit (ISO 4217 currency code) | |
| MYS Malaysia (ISO 3166 trigram) | |
| MYT Mayotte (ISO 3166 trigram) | |
| MZ Mach-Zehnder (interferometer)-Magnetic Azimuth-Move, Zig (Zero Wing)-Mozambique (FIPS 10-4 country code; ISO 3166 digram) | |
| MZN Mozambique metical (ISO 4217 currency code) | |
| n Nano | |
| N Newton-Nitrogen-North | |
| N3F National Fantasy Fan Federation | |
| 1911 | |
| na Nauruan language (ISO 639-1 code) | |
| nA Nanoampere | |
| Na Sodium (Latin Natrium) | |
| NA Namibia (ISO 3166 digram), Narcotics Anonymous,National Archives,Negative Acknowledge,N/A, Neurotics Anonymous,not available/applicable | |
| NAA N-Acetylaspartate | |
| NAAD North American Air Defense | |
| NAAFI Navy, Army and Air Force Institute (UK), No Ambition And Fuckall Interest (RSA army slang) | |
| NAAK Mark I NAAK, Nerve Agent Antidote Kit | |
| NAACP National Association for the Advancement of Colored People ("N double-A CP") | |
| NAAQS National Ambient Air Quality Standards | |
| NAAWS NATO Anti-Air Warfare System | |
| NABCI North American Bird Conservation Initiative ("nab-see") | |
| NAC (i/a) National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,NOAD ADVENDO Combinatie, the full name of the Dutch football club NAC Breda,North Atlantic Council,Northern Area Command | |
| NACA (U.S.) National Advisory Committee for Aeronautics (1915-1958, became NASA) | |
| NACC North Atlantic Cooperation Council | |
| NACISA NATO Communications and Information Systems Agency | |
| NACMA NATO Air Command and Control System Management Agency | |
| NACRA North America Caribbean Rugby Association (more specifically rugby union), a former name of Rugby Americas North | |
| NAD Namibian dollar (ISO 4217 currency code) | |
| NAEC U.S. Naval Air Engineering Center | |
| NAF NATO Architecture Framework, Naval Air Facility | |
| NAFLD NonAlcoholic Fatty Liver Disease | |
| NAFO Northwest Atlantic Fisheries Organization | |
| NAFERA Native American Free Exercise of Religion Act | |
| NAFTA North American Free Trade Agreement | |
| NAGPRA Native American Graves Protection and Repatriation Act | |
| NAI Named Area of Interest,Network Access Identifier | |
| NAICS North American Industry Classification System | |
| NAIL Neurotics Anonymous | |
| NAILS National Airspace Integrated Logistics System | |
| NAIRU Non Accelerating Inflation Rate of Unemployment | |
| NAK Negative Acknowledge | |
| NAM Namibia (ISO 3166 trigram) | |
| NAMBLA North American Man-Boy Love Association | |
| NAMRL Naval Aerospace Medical Research Laboratory | |
| NaN Not A Number (computing) | |
| NANP North American Numbering Plan (telephone) | |
| NAO UK National Audit Office | |
| NAPDD Non-Acquisition Program Definition Document ("nap-dee-dee") | |
| NAPS Navy Acquisition Procedures Supplement | |
| NARA (U.S.) National Archives and Records Administration | |
| NARAL National Abortion Rights Action League | |
| NARDAC Naval Regional Data Automation Center | |
| NARDIC U.S. Navy Acquisition Research and Development Information Center | |
| NARP Non-Athletic Regular Person | |
| NARPV National Association for Remotely Piloted Vehicles | |
| NAS National Academy of Sciences,National Air Space,National Audubon Society,Naval Air Station,New Attack Submarine | |
| NASA National Aeronautics and Space Administration | |
| NASCAR National Association for Stock Car Auto Racing | |
| NASDAQ National Association of Securities Dealers Automated Quotations | |
| NASED National Association of State Election Directors [1][2] | |
| NASH Non-Alcoholic Steatohepatitis | |
| NASP National Aerospace Plane | |
| NASS National Association of Secretaries of State [3] | |
| NatGeo National Geographic | |
| NATO National Association of Theatre Owners,North Atlantic Treaty Organization | |
| nau Nauruan language (ISO 639-2 code) | |
| NaUKMA National University of Kyiv-Mohyla Academy | |
| nav Navajo language (ISO 639-2 code) | |
| NAV Navigation[al] | |
| NAVCAMS Naval Communications Area Master Station | |
| NAVCC National Audio-Visual Conservation Center | |
| NAVCENT Naval Forces U.S. Central Command | |
| NAVDAC Naval Data Automation Command | |
| NAVEUR Naval Forces U.S. European Command | |
| NAVFE U.S. Naval Forces, Far East | |
| NAVFOR Naval Force | |
| NAVMACS Naval Modular Automatic Communication Subsystem | |
| NAVNET Navy Network | |
| NAVS Non-Cooperative Airborne Vector Scoring | |
| NAVSAT Navigation Satellite | |
| NAVSPACECOM U.S. Navy Space Command | |
| NAVSPASUR U.S. Naval Space Surveillance System | |
| NAVSTAR Navigation Satellite Timing And Ranging | |
| NAVTACNET Navy Tactical Network | |
| NAWC U.S. Naval Air Warfare Center | |
| NAWIRA North America and West Indies Rugby Association, the original name of the organization now known as Rugby Americas North | |
| NAWMP North American Waterfowl Management Plan ("gnaw-wump") | |
| nb Norwegian Bokmål language (ISO 639-1 code) | |
| Nb Niobium | |
| NB New Brunswick (postal symbol)-nota bene (Latin, "mark well") | |
| NBA National Basketball Association | |
| NBACC U.S. National Biodefense Analysis and Countermeasures Center ("enn-back") | |
| NBC National Broadcasting Corporation-Nuclear, Biological, and Chemical | |
| NBCRS NBC (Nuclear, Biological, and Chemical) Reconnaissance System | |
| NBIC Nanotechnology, Biotechnology, Information Technology, Cognitive Science | |
| nbl Southern Ndebele language (ISO 639-2 code) | |
| NBL National Basketball League (Australia) | |
| NBT Nitroblue tetrazolium (assay) | |
| nC Nanocoulomb | |
| NC Network Computer, New Caledonia (ISO 3166 digram), Node Center,Nonconsensual,Normally Closed, North Carolina (postal symbol) | |
| NCA National Command Authority | |
| NCAA National Collegiate Athletic Association ("NC double A") | |
| NCAR U.S. National Center for Atmospheric Research | |
| NCB National Codification Bureau | |
| NCCAM U.S. National Center for Complementary and Alternative Medicine | |
| NCCUSL National Conference of Commissioners on Uniform State Laws (U.S.) | |
| NCDDR U.S. National Center for the Dissemination of Disability Research[1] | |
| NCES U.S. National Center for Education Statistics,Net-Centric Enterprise Services | |
| NCI U.S. National Cancer Institute | |
| NCIS National Criminal Intelligence Service (British),Naval Criminal Investigative Service (U.S. Navy; see also NCIS, a U.S. TV series based on this unit) | |
| NCL New Caledonia (ISO 3166 trigram) | |
| NCLR National Council of La Raza | |
| NCMO No Commitment Make Out | |
| NCND Noncircumvention and Nondisclosure, Neither Confirm Nor Deny | |
| NCO Noncommissioned Officer | |
| NCP Net Contracted Purchases | |
| NCR National Cash Register Co. | |
| NCTR Noncooperative Target Recognition | |
| NCW Network Centric Warfare | |
| nd Northern Ndebele language (ISO 639-1 code) | |
| Nd Neodymium | |
| ND Nondisclosure, North Dakota (postal symbol) | |
| NDAA U.S. National Defense Authorization Act | |
| NDBP Non-Departmental Public Body (Scotland) | |
| NDCC New Directions Counseling Center (Concord, California) | |
| nde Northern Ndebele language (ISO 639-2 code) | |
| NDH Neue Deutsche Härte (German, "new German hardness"—heavy metal genre),Nezavisna Država Hrvatska (Croatian, "Independent State of Croatia"—Nazi puppet state) | |
| ndo Ndonga language (ISO 639-2 code) | |
| NDP New Democratic Party (Canada) | |
| NDS Nintendo DS | |
| NDU National Defense University (Washington, DC) | |
| ne Nepali language (ISO 639-1 code) | |
| Ne Neon | |
| NE Nebraska (postal symbol),Niger (ISO 3166 digram), North-East | |
| NEA National Education Association (U.S. labor union),Near-Earth Asteroid,Nuclear Energy Agency (OECD) | |
| NEAT Near-Earth Asteroid Tracking-,National Emergency Access Target (Au Health) | |
| NEC Network-enabled capability,Nijmegen Eendracht Combinatie (Dutch, "Nijmegen Unity Combination"; football club formed by the 1910 merger of the Nijmegen and Eendracht clubs),Nippon Electric Company, the original English-language name of the company now known as NEC,Northeast Conference (U.S. college sports) | |
| NED Netherlands (IOC and FIFA trigram, but not ISO 3166) | |
| NECTEC National Electronics and Computer Technology Center (Thailand) | |
| NEI National Eye Institute-Not Enough Information-Nuclear Energy Institute | |
| NEMS National Energy Modeling System (USDOE-EIA) | |
| NEO Near-Earth Object,Non-combatant Evacuation Operations | |
| nep Nepali language (ISO 639-2 code) | |
| NEPA National Environmental Policy Act | |
| NER Niger (ISO 3166 trigram) | |
| NERICA New Rice for Africa | |
| NESDIS National Environmental Satellite, Data and Information Service | |
| NESP NSA/CSS Enterprise Standards Program | |
| NET National Educational Television | |
| NETCU (UK) National Extremism Tactical Co-ordination Unit | |
| NETL (US) National Energy Technology Laboratory | |
| NETWARS Network Warfare Simulation | |
| NEWS Navy Electronic Warfare Simulator,North, East, West, South | |
| NEX Navy EXchange | |
| nF Nanofarad | |
| NF Newfoundland (and Labrador) (obsolete postal code, replaced by NL),Norfolk Island (ISO 3166 digram) | |
| NFA (U.S.) National Firearms Act (often used to refer to the guns and accessories regulated under this law),No-Fire Area | |
| NFC National Football Conference,Near field communication | |
| NFER National Foundation for Educational Research | |
| NFG No Fucking Good | |
| NFHS National Federation of State High School Associations | |
| NFI Not F****** Interested | |
| NFK Norfolk Island (ISO 3166 trigram) | |
| NFL National Football League,No-Fire Line | |
| Nfld Newfoundland | |
| NFPA National Fluid Power Association (United States) | |
| NFT No Further Text | |
| ng Nanogram-Ndonga language (ISO 639-1 code) | |
| NG Natural Gas,Next Generation, Niger (FIPS 10-4 country code),Nigeria (ISO 3166 digram) | |
| NGA National Geospatial-Intelligence Agency, Nigeria (ISO 3166 trigram) | |
| NGH Northern General Hospital | |
| NGATS New Generation Army Targetry System | |
| NGIC National Ground Intelligence Center ("Injick") | |
| NGN Nigerian naira (ISO 4217 currency code) | |
| NGO non-governmental organization | |
| NGR Nigeria (IOC trigram, but not ISO 3166 or FIFA) | |
| NGS Naval Gunfire Support | |
| nH Nanohenry | |
| NH New Hampshire (postal symbol)-New Hebrides (ISO 3166 digram; obsolete 1980)-Vanuatu (FIPS 10-4 country code; from New Hebrides) | |
| NHANES National Health and Nutrition Examination Survey | |
| NHB New Hebrides (ISO 3166 trigram; obsolete 1980) | |
| NHB No Holds Barred radio (Link) | |
| NHL National Hockey League | |
| NHO Næringslivets Hovedorganisasjon (Confederation of Norwegian Enterprises, a Norwegian employers' organisation) | |
| NHRA National Hot Rod Association | |
| NHS National Health Service (UK) | |
| Ni Nickel | |
| NI Nicaragua (ISO 3166 digram),Nigeria (FIPS 10-4 country code) | |
| NIAAA U.S. National Institute on Alcohol Abuse and Alcoholism | |
| NIAID National Institute of Allergies and Infectious Disease | |
| NIAG NATO Industrial Advisory Group | |
| NIAMD National Institute of Arthritis and Musculoskeletal Diseases | |
| NIB New In Box (Internet auction/trading listings) | |
| NIBP Non-invasive blood pressure monitor | |
| NIC Network Interface Card, Nicaragua (ISO 3166 trigram) | |
| NicA Nicotine Anonymous | |
| NICAP National Investigations Committee on Aerial Phenomena | |
| NICE UK. National Institute for Health and Clinical Excellence | |
| NICHD National Institute of Child Health and Human Development [4] | |
| NICP National Inventory Control Point | |
| NIDDK National Institute of Diabetes and Digestive and Kidney Diseases | |
| NIDRR National Institute on Disability Research and Rehabilitation | |
| NIEHS National Institute of Environmental Health Sciences | |
| NIG Niger (IOC and FIFA trigram, but not ISO 3166) | |
| NIH National Institutes of Health,Not Invented Here | |
| NIIN National Item Identification Number | |
| NIMA National Imagery and Mapping Agency (became NGA) | |
| NIMBY Not In My Back Yard (See NOME) | |
| NIMG Not In My Generation | |
| NiMH nickel metal hydride ("Ni" is the chemical symbol for nickel) | |
| NIMH National Institute of Medical Herbalists,National Institute of Mental Health | |
| NIN Nine Inch Nails (band) | |
| NIO Nicaraguayan cordoba oro (ISO 4217 currency code) | |
| NIOSH National Institute for Occupational Safety and Health (U.S.) | |
| NIPR National Institute of Polar Research (Japan) | |
| NIR Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram) | |
| NISAC U.S. National Infrastructure Simulation and Analysis Center | |
| NISCAP NSA Information System Certification and Accreditation Program | |
| NISER National Institute of Science Education and Research | |
| NIST (a/i) National Institute of Standards and Technology | |
| NIT National Invitation Tournament (U.S. college basketball), National Institutes of Technology (India) | |
| NITFS National Imagery Transmission Format Standard | |
| NIU Niue (ISO 3166 trigram) | |
| nJ Nanojoule | |
| NJ New Jersey (postal symbol) | |
| NJHS National Junior Honor Society | |
| NJPW New Japan Pro-Wrestling | |
| nK Nanokelvin | |
| NKA No Known Allergies | |
| NKVD Narodnyi Komissariat Vnutrennikh Del (Russian "People's Commissariat of Internal Affairs") (1934-1954) | |
| nl Dutch language (ISO 639-1 code) | |
| nL Nanolitre | |
| NL Netherlands (ISO 3166 and FIPS 10-4 country code digram),Newfoundland and Labrador (postal symbol) | |
| NLB Non-Linear Battlefield | |
| nld Dutch language (ISO 639-2 code) | |
| NLD Netherlands (ISO 3166 trigram) | |
| NLF National Liberation Front (disambiguation) | |
| NLL National Lacrosse League | |
| NLP Natural Language Processing,Neuro-Linguistic Programming (pseudoscience) | |
| NLW Non-Lethal Weapon | |
| nm nanometer | |
| NM New Mexico (postal symbol) | |
| NMCI Navy Marine Corps Intranet | |
| NMCS Not Mission Capable Supply (SM&R code) | |
| NMD U.S. National Missile Defense | |
| NMN No middle name | |
| NMOS (i/a) N-type/Negative Metal-Oxide-Semiconductor transistor ("enn-moss") | |
| NMSG NATO Modelling and Simulation Group | |
| NMR Nuclear Magnetic Resonance | |
| NMHNFG Not Made Here, No Fucking Good | |
| nn Norwegian Nynorsk language (ISO 639-1 code) | |
| nN Nanonewton | |
| NNE North North-East | |
| nno Norwegian Nynorsk language (ISO 639-2 code) | |
| NNSA U.S. National Nuclear Security Administration | |
| NNW North North-West | |
| no Norwegian language (ISO 639-1 code) | |
| No Nobelium | |
| NO Nitric Oxide, Normally Open, Norway (ISO 3166 and FIPS 10-4 country code digram) | |
| NOAA U.S. National Oceanic and Atmospheric Administration | |
| NOAF Norwegian Air Force | |
| NOAO National Optical Astronomy Observatory | |
| nob Norwegian Bokmål language (ISO 639-2 code) | |
| NOC UK. National Oceanography Centre | |
| NODEF NATO Oceanographic Data Exchange Format | |
| NOK Norwegian krone (ISO 4217 currency code) | |
| NOLA New Orleans, Louisiana (LA is the official postal code for Louisiana) | |
| NOGI New Orleans Grande Isle (award for diving) | |
| NOLF Navy OutLying Field | |
| NOM Novus Ordo Missae or New Ordinary of the Mass (sometimes abbreviated to simply "NO") | |
| NOME Not on Mars Either | |
| NoMBO Non-mine, Mine-like Bottom Object | |
| NOME Not on Mars Either (see NIMBY) | |
| NOPA National Office Products Alliance-National Office Products Association | |
| nor Norwegian language (ISO 639-2 code) | |
| NOR Norway (ISO 3166 trigram) | |
| NORAD North American Aerospace Defense Command | |
| NORCECA North, Central America and Caribbean Volleyball Confederation | |
| NORELPREF No religious preference | |
| NORML National Organization for the Reform of Marijuana Laws ("normal") | |
| NORTHAG Northern Army Group | |
| NOS Network Operating System,New Old Stock (Internet auction/trading listings),Nitric Oxide Synthase (enzyme) | |
| NOSA NATO OSI Security Architecture | |
| NOTAFLOF No One Turned Away For Lack Of Funds | |
| NOTAM Notice to Airmen | |
| NOW National Organization for Women | |
| Np Neap tide (nautical charts), Neptunium | |
| NP National Permit (authorization used in India to allow trucks to go anywhere in the nation),Nepal (ISO 3166 and FIPS 10-4 country code digram) | |
| NPB Nippon Professional Baseball | |
| NPC National Postgraduate Committee,National Provincial Championship (New Zealand rugby competition, now superseded by the Mitre 10 Cup and Heartland Championship),Navigation Planning Chart,Non-Player Character (role-playing games) | |
| NPCS Non-Passenger Coaching stock (in Railways) | |
| NPD Nationaldemokratische Partei Deutschlands (German) | |
| NPDI New Product Development and Introduction | |
| NPG Needline/Network Participation Group | |
| NPH Normal Pressure Hydrocephalus | |
| NPL National Priorities List, Nepal (ISO 3166 trigram) | |
| NPOV Neutral Point Of View | |
| NPR National Public Radio, Nepalese rupee (ISO 4217 currency code),NQ[edit] | |
| NQ Dronning Maud Land (ISO 3166 digram; obsolete 1983) | |
| NQOCD Not Quite Our Class, Dear (or Darling). (Upper-class English slang) | |
| NPO -,nothing by mouth,NR[edit] | |
| nr Southern Ndebele language (ISO 639-1 code) | |
| NR Nauru (ISO 3166 and FIPS 10-4 country code digram) | |
| NRA National Rifle Association | |
| NRAO National Radio Astronomy Observatory | |
| NRC National Research Council (U.S.)-Nuclear Regulatory Commission (U.S.) | |
| NRDC (U.S.) Natural Resources Defense Council | |
| NREL U.S. National Renewable Energy Laboratory | |
| NRK Norsk Rikskringkasting (Norwegian Broadcasting Corporation) | |
| NRMP National Resident Matching Program (U.S. medicine) | |
| NRO U.S. National Reconnaissance Office | |
| NRT Near Real Time | |
| NRTA | |
| NRU Nauru (ISO 3166 trigram) | |
| ns Nanosecond | |
| nS Nanosiemens | |
| NS Norfolk Southern Railway (AAR reporting mark),Nova Scotia (postal symbol),Suriname (FIPS 10-4 country code) | |
| NSA U.S. National Security Agency,Naval Support Activity,No Strings Attached | |
| NSABB National Science Advisory Board for Biosecurity | |
| NSAID Non-Steroidal Anti-Inflammatory Drug | |
| NSB Norges Statsbaner (Norwegian State Railways) | |
| NSBM National Socialist black metal | |
| NSC National Security Council | |
| NSDAP Nationalsozialistische Deutsche Arbeiterpartei (German: "German National Socialist Workers Party", the formal name of the Nazi Party) | |
| NSDL National Science Digital Library (US) | |
| NSG National System for Geospatial-Intelligence | |
| NSN National Stock Number | |
| NSNA National Student Nurses' Association | |
| NSO National Standardization Office (ABCA) | |
| NSS (U.S.) Naval Simulation System | |
| NST (UK) Nimrod Software Team | |
| NSTAC National Security Telecommunications Advisory Committee | |
| NSV Nikitin-Sokolov-Volkov heavy machine gun (Russian НСВ Никитина-Соколова-Волкова) ru:ПулеметНСВ-12,7 "Утес" | |
| NSW New South Wales (postal symbol) | |
| nT Nanotesla | |
| NT National Trust (UK), Saudi-Iraqi neutral zone (ISO 3166 digram; obsolete 1993), New Technology (Windows NT), Northern Territory (Australia) (postal symbol),Northwest Territories (Canada) (postal symbol) | |
| NTC National Training Center,Negative Temperature Coefficient (thermistor) | |
| NTDS Naval Tactical Data System | |
| NTP Network Time Protocol | |
| NTR Network Time Reference | |
| NTRA National Thoroughbred Racing Association | |
| NTSB National Transportation Safety Board | |
| NTSC National Television Standards Committee (colloquially, Never Twice the Same Color) | |
| NTV Non-Tactical Vehicle | |
| NTY (Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You | |
| NTZ Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993) | |
| NU Nicaragua (FIPS 10-4 country code),Niue (ISO 3166 digram),Nunavut (postal symbol) | |
| NUI No user interface ("noo-ey") | |
| NUL Null character (ASCII code of control character),National Urban League | |
| NUTS Nuclear Utilization Target Selection | |
| NUWC U.S. Naval Undersea Warfare Center | |
| nv Navajo language (ISO 639-1 code) | |
| nV Nanovolt | |
| NV Naamloze vennootschap (Dutch, "innominate partnership" or "anonymous venture"; i.e. a public limited-liability company), Nevada (postal symbol) | |
| NVEOL Night Vision and Electro-Optics Laboratory | |
| NVESD CERDEC Night Vision and Electronic Sensors Directorate, Fort Belvoir, Virginia | |
| NVG Night Vision Goggles | |
| NVL Night Vision Laboratory | |
| nW Nanowatt | |
| NW North-West | |
| NW Nuclear Weapon | |
| NWA National Wrestling Alliance | |
| NWF National Wildlife Federation | |
| NWFZ Nuclear-Weapon-Free Zone | |
| NWHN U.S. National Women's Health Network | |
| nWo New World Order (see article for explanation of idiosyncratic capitalization) | |
| NWOAHM New Wave of American Heavy Metal | |
| NWOBHM New wave of British heavy metal (sometimes pronounced /nəˈwɒbəm/ as if it were an acronym) | |
| NWRA National Wildlife Rehabilitators Association | |
| NWSL National Women's Soccer League (U.S.) | |
| NWT North-West Territories | |
| NX Part of computer memory marked as "no execute"-Automobile made by Nissan-unit of illuminance-National Express-Net exports | |
| NXA 21st arcade game in the Pump It Up series | |
| NXD Native XML | |
| NXE New Xbox Experience | |
| NXG New Cross Gate station | |
| NXL National XBall League | |
| NXN Nike Cross Nationals | |
| NXP "Next Experience" Semiconductors | |
| ny Chichewa language (ISO 639-1 code) | |
| NY New York (postal symbol) | |
| nya Chichewa language (ISO 639-2 code) | |
| NYHA New York Heart Association | |
| NYO National Youth Orchestra of Great Britain | |
| NYRA National Youth Rights Association-New York Racing Association (horse racing) | |
| NYSE New York Stock Exchange | |
| NZ New Zealand (ISO 3166 and FIPS 10-4 country code digram) | |
| NZC New Zealand Cricket | |
| NZD New Zealand dollar (ISO 4217 currency code) | |
| NZL New Zealand (ISO 3166 trigram) | |
| NzL Noze looan (online/event listings) | |
| NZOSS New Zealand Open Source Society | |
| NZR New Zealand Railways,New Zealand Rugby (governing body for rugby union) | |
| NZRU New Zealand Rugby Union, the former name of the organisation now known as New Zealand Rugby | |
| O Oberst-Observer-Obstacle-Octal- | |
| Officer Official-Oh-Operational- | |
| Operator Oprah (magazine)-Outstanding-Oxygen | |
| OA Operational Analysis-Overeaters Anonymous | |
| OAC On Approved Credit | |
| OAP Old Age Pensioner (UK) | |
| OAS Organization of American States | |
| OARSI Osteoarthritis Research Society International | |
| OASIS Objects and Agents for Information Systems and Simulation-Organization for the Advancement of Structured Information Standards | |
| OASIS Ontario Agencies Supporting Individuals with Special Needs | |
| OASIS Ontario Association of Sewage Industry Services | |
| OASP Operational Analysis Support Paper/Plan | |
| OAU Organization for African Unity | |
| ob obiit (Latin, " he died") | |
| OB | |
| Obstetrics Ocean Beach (California)-Off Break (cricket)-Old Bryanstonian- | |
| OBE Officer of the Order of the British Empire | |
| OBJ Objective (military parlance) | |
| OBM Obsidian Black Metallic (automobile paint color) | |
| OBS Observation/Observer-Obsolete-Obstacle- | |
| OBSS | |
| OBX Outer Banks (North Carolina) | |
| oc Occitan language (ISO 639-1 code) | |
| OC Officer Commanding | |
| OCA Observatoire de la Côte d'Azur-Offensive Counter-Air | |
| OCD Obsessive-Compulsive Disorder | |
| OCFS Oracle Cluster File System | |
| OCFS2 Oracle Cluster File System Release 2 | |
| oci Occitan language (ISO 639-2 code) | |
| OCIDS Optical Combat Identification System | |
| OCMCC [2] Orchard County MCC | |
| OCN Oncology Certified Nurse | |
| OCO Oort Cloud Object | |
| OCOKA Observation, Cover and concealment, Obstacles, Key terrain, and Avenues of approach (mnemonic) | |
| OCR Optical Character Recognition | |
| OCS see entry | |
| OD Old Dragon,Ordnance Datum (nautical charts), Overdose | |
| ODAS OCA-DLR Asteroid Survey | |
| ODB Ol' Dirty Bastard (rapper), One Dirty B*tch/Broad/Babe (professional wrestler), Operational Data Base, Original David Baker (professional poker player; used to distinguish from another professional poker player of the same name), Oxford Dictionary of Byzantium | |
| ODBC Open DataBase Connectivity | |
| ODI Office for Disability Issues (UK government agency),One Day International (cricket),Open Data-Link Interface,Oracle Data Integrator,Overseas Development Institute (UK think tank),OE[edit] | |
| OEA (U.S.) Office of Economic Adjustment | |
| OED Oxford English Dictionary | |
| OECD Organisation for Economic Co-operation and Development (international) | |
| OEG Operation Exposure Guidance | |
| OEIS On-Line Encyclopedia of Integer Sequences | |
| OEM Original Equipment Manufacturer | |
| OFA Occipital Face Area | |
| OFDA U.S Agency for International Development's Office of Foreign Disaster Assistance | |
| OGC Open Geospatial Consortium | |
| OGD Other Government Department | |
| OGO Other Government Organization | |
| OGX OUARGLA-a petroleum state in the south of Algeria | |
| OH Ohio (postal symbol) | |
| OHC OverHead-Cam engine | |
| OHHLA Original Hip-Hop Lyrics Archive | |
| OHIP Ontario Health Insurance Plan | |
| OHMS On Her (or His) Majesty's Service (also written: O.H.M.S.) | |
| OHP Observatoire de Haute-Provence | |
| OHSS Ovarian Hyperstimulation Syndrome | |
| OIC Officer In Charge | |
| OIE World Organisation for Animal Health (originally the Office international des épizooties, French for "International Epizootic Office") | |
| OIF Operation Iraqi Freedom | |
| OIOC Oriental & India Office Collections (in the British Library) | |
| oj Anishinaabe language (Ojibwa) (ISO 639-1 code) | |
| OJ Orange Juice-O.J. Simpson | |
| oji Anishinaabe language (Ojibwa) (ISO 639-2 code) | |
| OJT On-the-Job Training | |
| OK Oklahoma (postal symbol), oll korrect (facetious alteration of "all correct", 1839) | |
| OKC Oklahoma City | |
| OLED Organic Light-Emitting Diode | |
| OLS Operational Linescan System | |
| om Oromo language (ISO 639-1 code) | |
| OM Oman (ISO 3166 digram)-Olympique de Marseille (French football club) | |
| OMA Open Mobile Alliance-Operations & Maintenance, Army | |
| OMB U.S. Office of Management and Budget-Ontario Municipal Board-Order of Mapungubwe in Bronze | |
| OMD Orchestral Manoeuvres in the Dark (1980s pop group) | |
| OME Osaka Mercantile Exchange | |
| OMFG Oh My Fucking God | |
| OMG Oh My God or Or My Gosh | |
| OMGW "Oh My Gosh it's Windy" | |
| OMN Oman (ISO 3166 trigram) | |
| OMNCS U.S. Office of the Manager for the National Communications System | |
| OMP Order of Mapungubwe in Platinum | |
| OMR Omani rial (ISO 4217 currency code) | |
| OMS Order of Mapungubwe in Silver | |
| OMT Object Model Template | |
| OMW On My Way, Oh My Word | |
| ON Ontario (postal symbol) | |
| Onna Oniong, Nnung Ndem, and Awa, a Local Government Area in Nigeria | |
| ONC Orthopaedic Nurse Certified | |
| ONCE Organización Nacional de Ciegos Españoles (Spanish, "National Organization for the Spanish Blind") | |
| ONG Orthodontic National Group | |
| ONH Óglaigh na hÉireann (Irish idiom for "soldiers of Ireland"), used for the following: | |
| ONI (U.S.) Office of Naval Intelligence | |
| ONS Operational Needs Statement | |
| OO Object Oriented-Over & Out | |
| OOO Out Of the Office | |
| OOAD Object Oriented Analysis and Design | |
| OOBE Out-of-body experience | |
| OOCL Orient Overseas Container Line | |
| OODA Observation, Orientation, Decision, Action loop (a.k.a. Boyd's Loop) | |
| OOMF One Of My Followers | |
| OOP Object-Oriented Programming-Out Of Print | |
| OOS | |
| OOTW Operations Other Than War | |
| OP Observation Point/Post,Ocean Pacific (surfwear and swimwear brand),Original Poster (internet),Order Point, in inventory management; the inventory state at which more items should be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached, order OQ new items),Overpowered, often used to refer to fictional characters (e.g. Superman) or game mechanics (e.g. the Black Lotus in Magic: the Gathering) that are considered disproportionately strong | |
| OPA Other Procurement, Army | |
| OPAC Online Public Access Catalogue | |
| OPCON Operational control | |
| OPCW Organisation for the Prohibition of Chemical Weapons | |
| OPEC Organization of the Petroleum Exporting Countries | |
| OPFOR Opposing force | |
| OPI Office of Primary Interest,Open Prepress Interface | |
| OPINTEL Operational Intelligence | |
| OPLAN Operation plan (also OpPlan) | |
| OPORD Operation order | |
| OPP Ontario Provincial Police,Operational Planning Process,Other People's Property/Pussy/Penis (song) | |
| OPS On-base plus slugging (baseball statistics), Operations | |
| OPSEC Operations security,Open Platform for Security | |
| OPSI Overwhelming post splenectomy infection,UK Office of Public Sector Information | |
| OPTAR Operational target | |
| OPV Offshore Patrol Vessel | |
| OQ Order Quantity, in inventory management; the quantity of new items to be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached, order OQ new items) | |
| or Oriya language (ISO 639-1 code) | |
| OR Operating Room (surgery)-Operational/Operations Research-Oregon (postal symbol)-overreciprocation-when the leader of an inner circle friendship contacts a friend more than is wanted or reasonable | |
| ORAU (a/i) Oak Ridge Associated Universities | |
| ORB (a/i) Object Request Broker | |
| ORBAT Order of Battle | |
| ORD O'Hare International Airport in Chicago, Illinois (IATA Airport Code ORD) | |
| ORD Office of Research and Development-Operational Requirements Document | |
| ORF Operational iness Float | |
| ori Oriya language (ISO 639-2 code) | |
| ORISE Oak Ridge Institute for Science and Education | |
| orm Oromo language (ISO 639-2 code) | |
| ORNL Oak Ridge National Laboratory | |
| ORR Oak Ridge Reservation (U.S. DOE)-Office of Rail Regulation (UK government)- | |
| ORSA Oxacillin-resistant Staphylococcus aureus-Operations Research Society of America | |
| OS Operating System | |
| os Ossetic language (ISO 639-1 code) | |
| Os Osmium | |
| OSA Order of St. Augustine | |
| OSCE Organization for Security and Co-operation in Europe | |
| OSD U.S. Office of the Secretary of Defense-On-screen Display | |
| OSDL Open Source Development Labs | |
| OSE Own Separate Entrance | |
| OSERS U.S. Department of Education Office of Special Education and Rehabilitative Services | |
| OSETI Optical SETI also Optical SETI | |
| OSHA Occupational Safety and Health Administration | |
| OSI | |
| OSIA (U.S.) On-Site Inspection Agency | |
| OSL Open Source License-Optically Stimulated Luminescence-Orbiting Solar Laboratory | |
| OSIRIS Optical, Spectroscopic, and Infrared Remote Imaging System (astronomical system on the Rosetta spacecraft),Optical System for Imaging and low Resolution Integrated Spectroscopy (astronomical system on the land-based Gran Telescopio Canarias) | |
| OSM One Saturday Morning | |
| OSPA Operations Security Professional's Association site of OSPA | |
| OSPA Oregon School Psychologists Association [3] | |
| OSRH Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia) | |
| oss Ossetic language (ISO 639-2 code) | |
| OSS Office of Strategic Services (1942-1945, forerunner of CIA) | |
| OSU Ohio State University-Oklahoma State University | |
| OTA Occupational Therapy Assistant, Office of Technology Assessment-(a/i) Orthodontic Technicians Association | |
| OTAC Orthodontic Technicians Association Conference-Orthodontic Technicians Association Council | |
| OTB Off The Ball-Offtrack Betting-OneSAF Testbed (a descendant of ModSAF) | |
| OTC Over-The-Counter (drugs) | |
| OTD Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith) | |
| OTEA (U.S. Army) Operational Test Evaluation Agency | |
| OTI Office of Transition Initiatives (United States Agency for International Development) | |
| OTO Ordo Templi Orientis (Latin, "Order of the Temple of the East", i.e. the Order of Oriental Templars) | |
| OTOH On The Other Hand | |
| OTS Off the scale, sexually untouchable except for a lot of money. | |
| OTSBH Over The Shoulder Boulder Holder | |
| OTW On The Way | |
| OTYBL Over To You Blue Leader | |
| OTYRL Over To You Red Leader | |
| OU University of Oklahoma | |
| OVC Overcast (METAR Code)-Ohio Valley Conference | |
| OVV Optically Visually Violent, or Optically Violently Variable-a type of quasar | |
| OW Old Wykehamist | |
| OWN Oprah Winfrey Network | |
| OX IATA code for Orient Thai Airlines | |
| OXC Optical cross-connect | |
| OXF IATA code for London Oxford Airport | |
| OXM Official Xbox Magazine | |
| OXR IATA code for Oxnard Airport | |
| OXT Oxytocin | |
| Oy Osakeyhtiö (Finnish, "stock company") | |
| Oyj Julkinen osakeyhtiö (Finnish, "public stock company") | |
| OZ (?) Australia | |
| p pico | |
| P Peta-Phosphorus | |
| P2P Peer-to-peer (networking) | |
| pa Punjabi language (ISO 639-1 code) | |
| pA picoampere | |
| Pa pascal,Protactinium | |
| PA (a/i) Pamela Anderson, Panama (ISO 3166 digram),Paraguay (FIPS 10-4 country code), Partial Agonist, Pennsylvania (postal symbol),petampere, PolyAmide (Nylon),Prince Albert piercing,Public Address (vocal amplification system),Public Affairs,PA 6-Nylon 6 (PolyAmide) (similarly for PA 11, 12, 46, 66, 610) | |
| PAA Position Area for Artillery | |
| PAB Panamanian balboa (ISO 4217 currency code) | |
| PABX Private Automated Branch eXchange (company phone system) | |
| PAC Pan Africanist Congress, Partial Solar Calibrator,Patriot Advanced Capabilities,Political action committee,(a/i) Primary Auditory Cortex | |
| PACOM (U.S.) Pacific Command | |
| PADD Personal Access Display Device (as seen in the Star Trek franchise),Petroleum Administration for Defense Districts, used for data collection in the U.S. petroleum industry | |
| PADI Professional Association of Diving Instructors | |
| PAEK PolyArylEtherKetone | |
| PAFC Plymouth Argyle Football Club | |
| PAH Polycyclic aromatic hydrocarbon | |
| PAHO Pan American Health Organization | |
| PAI PolyAmide Imide,Pre-Approval Inspection (pharma) | |
| PAK Pakistan (ISO 3166 trigram) | |
| Pakistan Punjab, Afghan states, Kashmir, sIndh, baluchiSTAN | |
| PAL Phase Alternating Line (TV standard), Philippine Airlines | |
| PAM (a/i) Precision Attack Missile | |
| Pamida Patrick, Michael, and David, sons of the department store chain's co-founder Jim Witherspoon | |
| PAMELA Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics, Pedestrian Accessibility and Movement Environment Laboratory | |
| pan Punjabi language (ISO 639-2 code) | |
| PAN Panama (ISO 3166 trigram), Partai Amanat Nasional (Indonesian, "National Mandate Party")-Indonesian political party,Partido Acción Nacional (Spanish, "National Action Party")-political parties in El Salvador, Mexico, and Nicaragua,Partido de Avanzada Nacional (Spanish, "National Advancement Party")-Guatemalan political party,Personal Area Network, PolyAcryloNitrile, Programa de Asistencia Nutricional (Spanish, "Nutritional Assistance Program")-U.S. federal program for nutritional needs of poor families in Puerto Rico | |
| PANS Pretty Advanced/Awesome Network Services (cf. POTS) | |
| PAO Panathinaikos Athlitikos Omilos (Greek: Παναθηναϊκός Αθλητικός Όμιλος, "Pan-Athenian Athletic Club"),Public Affairs Officer | |
| PAOK Panthessalonikeios Athlitikós Ómilos Konstantinoupoliton (Greek Πανθεσσαλονίκειος Αθλητικός Όμιλος Κωνσταντινοπολιτών, "Pan-Thessalonian Athletic Club of Constantinopolites") | |
| PAPI Precision Approach Path Indicator (aviation) | |
| PAR Paraguay (IOC and FIFA trigram, but not ISO 3166) | |
| PARC Palo Alto Research Center | |
| PAROS Prevention of an Arms Race in Outer Space (treaty) | |
| PARP (NATO Partnership for Peace) Planning And Review Process | |
| PARWIG Power Augmented Ram Wing In Ground (aeroplane wing shape) | |
| PAS See entry | |
| PASA PolyAmide, Semi-Aromatic (Nylon) | |
| PASGT Personnel Armor System, Ground Troops | |
| PASR Personnel Accounting and Strength Reporting | |
| PatD Panic! at the Disco | |
| PATH Port Authority Trans-Hudson | |
| PAWS Phased Array Warning System,Progressive Animal Welfare Society | |
| PAYD Pay As You Drive | |
| PAYE Pay As You Earn | |
| Pb Lead (Latin Plumbum) | |
| PB PolyButylene | |
| PBA Philippine Basketball Association,Professional Bowlers Association | |
| PBB PolyBrominated Biphenyl | |
| PBCK Problem Between Chair and Keyboard (computer help desk in-joke) | |
| PBD PolyButaDiene | |
| PBDE PolyBrominated Diphenyl Ether | |
| PBI PolyBenzImidazole | |
| PBN PolyButylene Naphthalate | |
| PBOH Please Become Old History | |
| PBR Pabst Blue Ribbon (beer brand),Professional Bull Riders | |
| PBS Pharmaceutical Benefits Scheme (Australia),Public Broadcasting Service (U.S.),Public Broadcasting Services (Malta) | |
| PBRT may stand for: Physically Based Raytracing, an open source software rendering system for physically correct image synthesis. | |
| PBT PolyButylene Terephthalate | |
| PBX Private Branch eXchange (company phone system) | |
| pC picocoulomb | |
| PC petacoulomb,U.S. Pacific Islands Trust Territory (ISO 3166 digram; obsolete 1986), Personal computer,Player Character (roleplaying),Politically Correct / Political Correctness,post cibum (Latin, "after meals") | |
| PCAS Planet-Crossing Asteroid Survey | |
| PCB see entry | |
| PCC NATO Partnership Coordination Cell,Posterior Cingulate Cortex,Pre-Command Course,Presidents Conference Committee | |
| PCCB Porsche Ceramic Composite Brake | |
| PCCIP President's Commission on Critical Infrastructure Protection | |
| PCE PerChlorEthylene | |
| PCI U.S. Pacific Islands Trust Territory (ISO 3166 trigram; obsolete 1986), Peripheral Component Interconnect (computer bus) | |
| PCIe Peripheral Component Interconnect Express (computer bus) | |
| PCL Passive Coherent Location | |
| PCMCIA Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms) | |
| PCN Pitcairn Islands (ISO 3166 trigram) | |
| PCP phencyclidine,Pneumocystis jiroveci pneumonia (formerly Pneumocystis carinii), Probabilistically Checkable Proof | |
| PCPI Physician Consortium for Performance Improvement (AMA) | |
| PCR Polymerase chain reaction | |
| PCSSD Pulaski County Special School District | |
| PCT Pacific Crest Trail,Patent Cooperation Treaty | |
| PCTE Portable Common Tool Environment, Punjab College of Technical Education | |
| PCZ Panama Canal Zone (ISO 3166 trigram; obsolete 1980) | |
| Pd Palladium | |
| PD per diem (Latin: (calculated) by the day),Point of Departure,Police Department,Postal District,Potential Difference,Principal Deputy,Privatdozent,Public domain | |
| PD Product Director—Example: CERDEC Product Director C4ISR and Network Modernization | |
| PDA Personal Digital Assistant,Predicted Drift Angle,Public Display of Affection,Push-Down Automaton | |
| PDD Past Due Date,Presidential Decision Directive | |
| PDF Panama[nian] Defense Forces (abolished 1990),Portable Document Format,Principal Direction of Fire | |
| PDG President Director General,Product Development Group | |
| PDL Premier Development League (U.S. minor soccer league),Pure Dumb Luck (Texan punk band) | |
| PDN Pull-Down Network | |
| PDP Programmable Data Processor,Performance Development Plan[1] | |
| PDQ Pre-Defined Queries (Siebel packages),Pretty Damn Quick | |
| PDRY People's Democratic Republic of Yemen (obsolete since 1990) | |
| PDT Pacific Daylight [Saving] Time (UTC-7 hours) | |
| PDU Police Dog Unit,Power Distribution Unit,Protocol Data Unit | |
| PDVSA (a/i) Petróleos de Venezuela, S.A. (Spanish, "Venezuelan Petroleum Company") | |
| PE Professional Engineer | |
| PE Ice Pellets (old style METAR Code)-Peru (ISO 3166 and FIPS 10-4 country code digram)-Physical Education-Premature Ejaculation-Prince Edward Island (postal code)-Price to Earning ratio (used for equity shares)-Plant Extract | |
| PEBCAC Problem Exists Between Chair and Computer (IT help desk in-joke) | |
| PEBKAC Problem Exists Between Keyboard and Chair (ditto) | |
| PEEK PolyEtherEtherKetone | |
| PEET Partnerships for Enhancing Expertise in Taxonomy | |
| PEGIDA Patriotische Europäer gegen die Islamisierung des Abendlandes (German, "Patriotic Europeans Against the Islamization of the West") | |
| PEI Prince Edward Island-PolyEtherImide | |
| PEK PolyEtherKetone | |
| PEN Peruvian sol (ISO 4217 currency code), Poets, Essayists and Novelists, the original meaning of the initialism of the organization now known as PEN International,PolyEthylene Naphthalate | |
| PEO Παγκύπρια Εργατική Ομοσπονδία (Greek for "Pancyprian Federation of Labour")- | |
| PEPFAR President's Emergency Plan For AIDS Relief | |
| PER Peru (ISO 3166 trigram) | |
| perl usually lower case Practical Extraction and Report Language | |
| PES PolyEtherSulfone | |
| PEST UK Public Engagement with Science and Technology | |
| PET (a/i) Personal Electronic Transactor- | |
| PETA (a/i) pentaerythritol triacrylate-People Eating Tasty Animals-People for the Ethical Treatment of Animals | |
| PETE PolyEthyleneTErephthalate | |
| PETP PolyEthyleneTerePhthalate | |
| pF picofarad | |
| PF French Polynesia (ISO 3166 digram),petafarad, Phenol Formaldehyde (resin),Power forward, a player position in Australian rules football, basketball, and ice hockey | |
| PFD Permanent Fund Dividend = personal flotation device | |
| PFE Permanent Forest Estate | |
| PFLAG Parents, Families and Friends of Lesbians and Gays ("pee-flag") | |
| PFIY Please Fix it Yourself ("pee-fiy") | |
| PFO Pissed, Fell Over (medical diagnosis in-joke) | |
| PfP Partnership for Peace | |
| PFW Pro Football Weekly (magazine and website covering the National Football League),Purdue University Fort Wayne,PG[edit] | |
| pg picogram | |
| Pg petagram | |
| PG | |
| PGCE Postgraduate Certificate in Education | |
| PGD Pre-implantation Genetic Diagnosis | |
| PGENI Pharmaco-Genetics for Every Nation Initiative | |
| PGH Pre-implantation Genetic Haplotyping | |
| PGK Papua New Guinea kina (ISO 4217 currency code) | |
| PGM Precision-Guided Munition | |
| PGP Pretty Good Privacy | |
| pH parts of hydrogen (acidity/alkalinity index)-picohenry | |
| PH Passive Homing (missile guidance system)-petahenry- | |
| PHA PolyHydroxyAlkanoate-Potentially Hazardous Asteroid | |
| PHL Philippines (ISO 3166 trigram) | |
| PHQ Patient Health Questionnaire | |
| PHP Philippine peso (ISO 4217 currency code)-PHP: Hypertext Preprocessor (originally Personal Home Page (Tools)) | |
| pi Pāli language (ISO 639-1 code) | |
| Pi Pebi | |
| PI PolyImide-PolyIsoprene-Private Investigator | |
| PIB PolyIsoButylene | |
| PIC Person In Charge | |
| PICNIC Problem In Chair Not In Computer | |
| PICS Private Investment Capital Subscription | |
| PID Pelvic Inflammatory Disease- | |
| PIF (a/i) Partners in Flight | |
| PIG Pipeline Inspection Gauge | |
| PIGS Passenger Inert Guidance Systems-Movable tape barrier, typically used on airport aprons to guide passengers to/from their aircraft avoiding danger areas. | |
| PIM | |
| PIN Personal Identification Number | |
| PINF People In Need Foundation (Czech charitable organisation) | |
| PIPA (a/i) Program on International Policy Attitudes | |
| PIR Priority Intelligence Requirement | |
| PIRA Provisional Irish Republican Army | |
| PIREPS Pilot Reports | |
| PITA Pain In The Ass | |
| PITS Person In The Seat. A common problem as to why a computer is not working properly. It is a PITS issue. | |
| pJ picojoule | |
| PJ petajoule | |
| PJHQ Permanent Joint Headquarters | |
| PJs Pajamas ("pee-jayz") | |
| K picokelvin | |
| PK Pakistan (ISO 3166 and FIPS 10-4 country code digram)-petakelvin- | |
| PKA previously known as-professionally known as | |
| PKE Partnership of Kindermusik Educators[3][4][5] | |
| PKI public key infrastructure (cryptography) | |
| PKM Pulemet Kalashnikova Modernizirovanniy (Russian ПКМ пулемет Калашникова модернизированный, "Machinegun Kalashnikov Modernised")[2] | |
| PKMS Pulemet Kalashnikova Modernizirovanniy Stepanova (Russian ПКМС пулемет Калашникова модернизированный Степанова, "Machinegun Kalashnikov Modernised Stepanova")[2] | |
| PKMT Pulemet Kalashnikova Modernizirovanniy Tankoviy (Russian ПКМТ пулемет Калашникова модернизированный танковый, "Machinegun Kalashnikov Modernised Tank") (a.k.a. PKTM)[2] | |
| PKR Pakistani rupee (ISO 4217 currency code) | |
| PKT Pulemet Kalashnikova Tankoviy (Russian ПКТ пулемет Калашникова танковый, "Machinegun Kalashnikov Tank")[2] | |
| PKTM Pulemet Kalashnikova Tankoviy Modernizirovanniy (Russian ПКТМ пулемет Калашникова танковый модернизированный, "Machinegun Kalashnikov Tank Modernised") (a.k.a. PKMT)[2] | |
| PKU Phenylketonuria | |
| pl Polish language (ISO 639-1 code) | |
| pL picolitre | |
| PL | |
| PLAF (a/i) People's Liberation Armed Forces-Pluggable look and feel-Product Line Architecture Framework | |
| PLAID Precision Location and Identification | |
| PLB Personal Locator Beacon | |
| PLC Public Limited Company (British) | |
| PLCC Plastic Leaded Chip Carrier (electronics) | |
| PLD Probable Line of Deployment | |
| PLEBS People Lacking Everyday Basic Skills | |
| PLF Parachute Landing Fall | |
| PLGR Precision Lightweight GPS Receiver ("plugger") | |
| pli Pāli language (ISO 639-2 code) | |
| PLI Position Location Information-Private Lands Initiative-Professional Liability Insurance | |
| PLIF Planar Laser-Induced Fluorescence | |
| PLK Polska Liga Koszykówki (Polish, "Polish Basketball League") | |
| PLKK Polska Liga Koszykówki Kobiet (Polish, "Polish Women's Basketball League") | |
| PLL Phase-Locked Loop (electronics) | |
| PLM Polarized Light Microscope/Microscopy | |
| PLMBA -,Phospholipid Bilayer Microarray | |
| Pln Platoon | |
| PLN Polish zloty (ISO 4217 currency code) | |
| PLO Palestine Liberation Organization | |
| PLOKTA Press Lots Of Keys To Abort | |
| PLP Platonic Life Partner | |
| PLS Palletized Loading System-Personal Locator System | |
| PLUTO Pipe Line Under The Ocean | |
| PLW Palau (ISO 3166 trigram) | |
| pm picometre | |
| Pm petametre-Promethium | |
| PM Panama (FIPS 10-4 country code)-Perry Mason-Phase Modulation- | |
| PMC Primary Motor Cortex | |
| PMCS Partial Mission Capable Supply (SM&R code)-Power Management Control System-Professional Military Comptroller School | |
| PME Professional Military Education | |
| PMHT Pardon My Hashtag (Also #PMHT) | |
| PMI Positive Material Identification | |
| PMID PubMed Identifier | |
| PMMA PolyMethylMethAcrylate | |
| PMOS (i/a) P-type/Positive Metal-Oxide-Semiconductor transistor ("pee-moss") | |
| PMS Premenstrual Syndrome | |
| PMSC NATO Political-Military Steering Committee on Partnership for Peace | |
| PMSL Piss Myself Laughing (Internet shorthand) | |
| PMT Premenstrual Tension (UK) (see Premenstrual Syndrome) | |
| pN piconewton | |
| PN petanewton,Pitcairn Islands (ISO 3166 diagram) | |
| PNAC Project for the New American Century | |
| PNC Palestinian National Council,Palmerston North City (cf. PNC, a New Zealand rapper from this city),Parti nationaliste chrétien, defunct Quebec political party,Pittsburgh National Corporation, one of the two companies that merged into today's PNC Financial Services,Provident National Corporation, the other company that merged into PNC Financial Services | |
| PNF Pilot Not Flying (aviation) | |
| PNG Papua New Guinea (ISO 3166 trigram), Portable Network Graphics | |
| PNP Parti national populaire, defunct Quebec political party, Partido Nuevo Progresista,Plug 'N' Play/Pray,Positive Negative Positive | |
| PNS Pensacola, Florida (IATA airport code) | |
| PNVS Pilot Night Vision Sensor | |
| PNH Paroxysmal nocturnal hemoglobinuria,Police Nationale d'Haïti (French, "National Police of Haiti"),PO[edit] | |
| Po Polonium | |
| PO Dust Devil (METAR Code), per os (Latin, "by mouth"), Portugal (FIPS 10-4 country code) | |
| PO Post Office | |
| PO Purchase Order | |
| POCD Post-Operative Cognitive Dysfunction | |
| pod Plain Old Documentation | |
| POD Payable on Death (banking term, and the full name of American metal band P.O.D.),Point of divergence (alternate or counterfactual history),Port of Debarkation | |
| POE Perl Object Environment-(b) Port Of Embarkation (c) Polyol Ester (d) Power Over Ethernet | |
| POETS Portable Occultation, Eclipse, and Transit electronic-camera System | |
| POFF Plain Old Flat File | |
| POG Passionfruit, Orange and Guava | |
| POGO Project On Government Oversight | |
| POI Program Of Instruction | |
| POK (a/i) Plane Of Knowledge | |
| pol Polish language (ISO 639-2 code) | |
| POL Petroleum, Oils and Lubricants, Poland (ISO 3166 trigram) | |
| POLAD Political Advice | |
| POM Program Objective Memorandum,PolyOxyMethylene | |
| POMDP Partially observable Markov decision process | |
| POP (a/i) Point of Presence,Post Office Protocol,Progesterone Only Pill | |
| por Portuguese language (ISO 639-2 code) | |
| POR Portugal (FIFA and IOC trigram, but not ISO 3166), Proposed Operational Requirement | |
| POS (a/i) Point Of Sale terminal (retail industry transaction computers), Piece Of S**t | |
| POSH Port Outbound Starboard Home (alleged) | |
| POSSLQ Person of the Opposite Sex Sharing Living Quarters | |
| POT (a/i) Plane Of Tranquility | |
| POTS Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome | |
| POV Point of view | |
| POW Prisoner of war | |
| pp pages, especially in references, e.g. "A. U. Thor, Title, Journal X, Vol. 1, no. 2 (2010) pp. 13-42." | |
| PP Papua New Guinea (FIPS 10-4 country code), Passage Point,per procurationem (Latin, "by proxy") | |
| PPA Parahippocampal Place Area,PolyPhthalAmide | |
| PPASC (U.S.) Plans and Program Analysis Support Center | |
| PPASSCCATAG "Proud Parents Against Singles, Seniors, Childless Couples And Teens And Gays", a fictional group formed by Marge Simpson | |
| PPCLI Princess Patricia's Canadian Light Infantry (regiment) | |
| PPG Pittsburgh Plate Glass (the original name of the company now known as PPG Industries),The Powerpuff Girls | |
| PPL Pakistan Petroleum Limited,Pay per lead (marketing),Pennsylvania Power and Light, former name of the U.S. utility company now known as PPL,Pfadfinder und Pfadfinderinnen Liechtensteins (German, "Scouts and Guides of Liechtenstein"),Phonographic Performance Limited (UK performing rights organisation) | |
| PPLI Precise Participant Location & Identification | |
| ppm Parts Per Million | |
| PPM Parts Per Million | |
| PPM Project Planning and Management | |
| PPO PolyPhenylene Oxide | |
| PPP Point-to-Point Protocol,Purchasing Power Parity | |
| PPQ Pulses Per Quarter (used in music programming, sequencers) | |
| PPQN Pulses Per Quarter Note (ditto) | |
| PPQT Pre-Production Qualification Test | |
| PPS post postscriptum,Precise/Precision Positioning Service (GPS),PolyPhenylene Sulfide | |
| PPV Pay-per-view | |
| PQ Province of Québec (obsolete postal code, replaced by QC), Parti Québécois,PR[edit] | |
| Pr Pastor or Priest | |
| Pr Praseodymium | |
| PR Public Relations, Puerto Rico (postal symbol; ISO 3166 digram) | |
| Prb Presbyter | |
| PRBO Point Reyes Bird Observatory | |
| PRC People's Republic of China | |
| PRD CERDEC Product Realization Directorate | |
| PRFG Partial Fog (METAR Code) | |
| PRI Puerto Rico (ISO 3166 trigram) | |
| PRK Democratic People's Republic of Korea (ISO 3166 trigram) | |
| PRM Personnel iness Management | |
| PRN pro re nata (Latin, "for the emergency", "as needed") | |
| PRT Portugal (ISO 3166 trigram), Provincial Reconstruction Team | |
| PRY Paraguay (ISO 3166 trigram) | |
| ps Pashto language (ISO 639-1 code),picosecond | |
| pS picosiemens | |
| Ps petasecond | |
| PS Palestinian Territory, Occupied (ISO 3166 digram), Personnel Services, petasiemens, post scriptum (Latin, "written after"),Power Steering,Power Supply,Public School | |
| PooS Poo Sniffer (Internet shorthand) | |
| PSA Paralysis Society of America,Pharmaceutical Society of Australia,Pressure-Sensitive Adhesive,Production Services Association,Prostate Specific Antigen,Public Service Announcement,Public Service Association | |
| PSC Personal service corporation,Primary Somatosensory Cortex | |
| PSE Palestinian Territory, Occupied (ISO 3166 trigram) | |
| PSG Pacific Seabird Group,Paris Saint-Germain | |
| PSI Pounds per square inch | |
| PSI (a/i) Portable Source Initiative | |
| PSO Peace Support Operations,Primary Standardisation Office (ABCA),Protocol Supporting Organization (of the ICANN) | |
| PSS Personnel System Support | |
| PST Pacific Standard Time (UTC−8 hours) | |
| PSU Pennsylvania State University | |
| PSV Philips Sport Vereniging (Dutch for "Philips Sports Union"),Public Service Vehicle | |
| PsyOp Psychological Operations | |
| pt Portuguese language (ISO 639-1 code) | |
| pT picotesla | |
| Pt Platinum | |
| PT petatesla-Physical Training (in the Army)-Portugal (ISO 3166 digram) | |
| PTA Parent-Teacher Association | |
| PTAL Public Transport Accessibility Level | |
| PTAN | |
| PTCAS Physical Therapy Centralized Application System | |
| PTES People's Trust for Endangered Species | |
| PTFE PolyTetraFluoroEthylene | |
| PTI Pardon the Interruption | |
| PTL Patrol-Primary Target Line | |
| PTO Patent and Trademark Office-Please Turn Over | |
| PTSD Post-Traumatic Stress Disorder | |
| PTUI (a/i) Plain-Text User Interface ("pa-too-ey") (cf CLI) | |
| Pu Plutonium | |
| PU Guinea-Bissau (FIPS 10-4 country code), Polyurethane, United States Miscellaneous Pacific Islands (ISO 3166 digram; obsolete 1986) | |
| Pub Publication | |
| PUG (a/i) PET Users Group | |
| PUN (a/i) Pull-Up Network | |
| PUP (a/i) Pull-Up Point | |
| PUR Puerto Rico (IOC and FIFA trigram, but not ISO 3166) | |
| pus Pashto language (ISO 639-2 code) | |
| PUS United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986) | |
| pV picovolt | |
| PV petavolt | |
| PVC | |
| PvE Player versus Environment | |
| PvP Player versus Player | |
| PVR Personal Video Recorder | |
| PvZ Plants vs. Zombies | |
| pW picowatt | |
| PW Palau (postal symbol; ISO 3166 digram) | |
| petawatt | |
| PWA Pirates With Attitude | |
| PWBA Pension and Welfare Benefits Administration | |
| PwC PricewaterhouseCoopers (international accounting firm) | |
| PWC PieceWise Constant (describing a mathematical function) | |
| PWL PieceWise Linear (describing a mathematical function) | |
| PWLC PieceWise Linear and Concave/Convex (describing a mathematical function) | |
| PWP Plot, What Plot? / Porn Without Plot (denotes plotless, um, "feel-good" stories in online fiction, especially fanfic or erotic fiction) | |
| PWR Pressurized Water Reactor | |
| PWV Pretoria-Witwatersrand-Vereeniging, the original name for the South African province now known as Gauteng, and still used to refer to the metropolitan agglomeration at the core of the province | |
| PX Post eXchange | |
| PY Paraguay (ISO 3166 digram)-Person-Year-Portsmouth yardstick | |
| PYF French Polynesia (ISO 3166 trigram) | |
| PYG Paraguayan guaraní (ISO 4217 currency code) | |
| PYMWYMI Put Your Money Where Your Mouth Is | |
| PZ Panama Canal Zone (ISO 3166 digram; obsolete 1980)-Pickup Zone | |
| Q1 First Quarter | |
| Q2 Second Quarter | |
| Q3 Third Quarter | |
| Q4 Fourth Quarter | |
| QA Qatar (FIPS 10-4 country code; ISO 3166 digram) | |
| Qantas Queensland And Northern Territory Aerial Services | |
| QAP Quadripartite Advisory Publication ("kwapp") | |
| QAR Qatari rial (ISO 4217 currency code) | |
| QAT Qatar (ISO 3166 trigram) | |
| QB Quarterback (football) | |
| QC Quality Control-Québec (postal symbol)-Queen's Counsel | |
| QCA Qualifications and Curriculum Authority-Quality Council of Alberta | |
| QCD Qualified Charitable Distribution-Quantum ChromoDynamics | |
| QD quaque die (Latin, "daily") | |
| QDOS Quick and Dirty Operating System ("cue-doss") | |
| QDR Quadrennial Defense Review | |
| QDRO Qualified domestic relations order ("quad-ro") | |
| QED quantum electrodynamics-quid es demonstrata or quod erat demonstrandum (Latin, "that proves it" or "which was to be demonstrated") | |
| QEH Queen Elizabeth's Hospital | |
| QFE Quoted For Emphasis-Local ground level atmospheric pressure (aeronautical Q code) | |
| QID quater in die (Latin, "four times daily") | |
| QIP Quadrilateral Interoperability Programme (ancestor of MIP; "quip") | |
| QK Air Canada Jazz (IATA airline designator) | |
| QLD Queensland, (Australia) (postal symbol) | |
| QM Quality Management-Quantum Mechanics-Queen Mother | |
| QNH Regional mean sea level atmospheric pressure (aeronautical Q code) | |
| QPR Queens Park Rangers F.C. (English football team)-Quality-Price Ratio (wine evaluation term) | |
| QPS Quark Publishing System | |
| QR Quake Rally-Qualitative Reasoning-Queensland Rail- | |
| QS quantum sufficit (Latin, "as much as suffices") | |
| QSCAT Quick Scatterometer satellite | |
| QSL Québec Sign Language | |
| QSO Quasi-Stellar Object | |
| QSTAG Quadripartite Standardization Agreement ("cue-stag") | |
| QT | |
| qu Quechua language (ISO 639-1 code) | |
| Quango (British Commonwealth) QUasi Autonomous Non-Governmental Organisation | |
| Quasar Quasi-stellar radio source | |
| QUB Queen's University Belfast | |
| que Quechua language (ISO 639-2 code) | |
| QUIET Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization) | |
| qv quod vide (Latin "which see") | |
| QVC "Quality, Value, Convenience" (home shopping channel) | |
| QWG Quadripartite Working Group ("qwig") | |
| QWGAOR Quadripartite Working Group on Army Operational Research ("qwig-a-o-r") | |
| QZ Awair (IATA airline designator) | |
| R | |
| R2I Resistance to Interrogation | |
| R3P Rearm, Refuel, and Resupply Point | |
| Ra Radium | |
| RA Radio Australia | |
| RA Rain (METAR Code)-Rear Area-Reinforced Alert- | |
| RAA Royal Automobile Association-South Australia-Rear Assembly Area | |
| RAAF Royal Australian Air Force | |
| Rabobank Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company) | |
| RAC Royal Automobile Club (in the United Kingdom, renamed RAC plc in 2002) | |
| RACK Risk Aware Consensual Kink (SM phrase) | |
| Racon RAdar beaCON | |
| RADA Royal Academy of Dramatic Art | |
| Radar Radio Detection And Ranging | |
| RADB Real America Database- | |
| RADb Routing Assets Data Base | |
| RadB Rad51/Dmc1 homologous protein | |
| RADC Region Air Defence Commander | |
| RAE UK Royal Aircraft Establishment (-1991) | |
| RAF Red Army Faction-Royal Air Force | |
| RAG Raising and Giving-Rocket Antitank Grenade | |
| RAGBRAI Register's Annual Great Bicycle Ride Across Iowa | |
| RAM Random Access Memory-Rolling Airframe Missile-Royal Air Maroc | |
| Ramark RAdar MARKer | |
| RAOC Rear Area Operation Centre | |
| RAP (a/i) Radio Access Point- | |
| RARDE UK Royal Armament Research and Development Establishment (1962-1991) | |
| RARE Rapid Acquisition with Relaxation Enhancement (MRI technique) | |
| RASC Royal Army Service Corp-Former corps of British Army | |
| RATELO Radiotelephone Operator | |
| Rb Rubidium | |
| RB Running Back (football) | |
| RBAR Row By Agonizing Row-a derogatory way of describing a technique of scanning a set of records in a database to update or examine the contents of each one. | |
| RBCI Radio Based Combat Identification | |
| RBI Runs Batted In | |
| RBOC (a/i) Regional Bell Operating Company ("Baby Bell") | |
| RC see entry | |
| RCA Radio Corporation of America,Root Cause Analysis,Royal Canadian Artillery,Royal City Avenue (famous entertainment zone in Thailand) | |
| RCAF Royal Canadian Air Force | |
| RCAR Research Council for Automobile Repairs ("are-car") | |
| RCC Rescue Co-ordination Centre | |
| RCCO Royal Canadian College of Organists | |
| RCHA Royal Canadian Horse Artillery (regiment) | |
| RCMP Royal Canadian Mounted Police | |
| RCRA Resource Conservation and Recovery Act ("reck-ra" or "rick-ra") | |
| RCS Radar Cross-Section,Reaction Control System,Revision Control System | |
| RCT Randomized Controlled Trial,Robotically Controlled Telescope,Rugby club toulonnais (French, "Rugby Club of Toulon") | |
| RCZ Rear Combat Zone | |
| RD Radio Disney | |
| RDA Research, Development, and Acquisition,Recommended Daily Allowance (Nutrition) | |
| RDD Radiological Dispersion Device | |
| RDDL (a/i) Resource Directory Description Language ("riddle") | |
| RDECOM (U.S. Army) Research, Development and Engineering Command | |
| RDM Remotely Delivered/Deliverable Mine | |
| RDO Rapid, Decisive Operation,Regular Day Off,Remote Data Objects | |
| RDS Remote Desktop Services (Microsoft service),Réseau des sports (French, "Sports Network" — Canadian French-language TV channel),Respiratory distress syndrome,Royal Dublin Society (see also RDS Arena, a stadium on the grounds often called "the RDS") | |
| RDT Remote Digital Terminal | |
| RDV Remote Detection Vehicle | |
| Re Rhenium | |
| RE Royal Engineers | |
| REACH Registration, Evaluation, Authorisation and Restriction of Chemical Substances | |
| REACT Remote Electronically Activated Control Technology | |
| REAM Retired Educators Association of Minnesota | |
| RECCE Reconnaissance | |
| REEF Reef Environmental Education Foundation | |
| REM (i/a) Rapid Eye Movement (sleep phase)-Rosicrucian Egyptian Museum | |
| REME Royal Electrical and Mechanical Engineers | |
| RERC Rehabilitation Engineering Research Center | |
| RES Radiation Exposure Status-Reserve | |
| RESNA Rehabilitation Engineering and Assistive Technology Society of North America | |
| REU Réunion (ISO 3166 trigram) | |
| Rf Rutherfordium | |
| RF Radio Frequency-Receptive Field (neurophysiology) | |
| RFA Restrictive Fire Area (military)-Royal Field Artillery | |
| RFC Request for Comments-Royal Flying Corps (WWI precursor to RAF) | |
| RFD Request for Documentation | |
| RFE Request for Evaluation | |
| RFEF Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation) | |
| RFF Right of First Refusal (legal term) | |
| RFI | |
| RFID Radio Frequency IDentification | |
| RFL Rugby Football League | |
| RFL Restrictive Fire Line (military) | |
| RFP Request for Proposal | |
| RFQ Request for Quotation | |
| RFT Request for Tender | |
| RFU Rugby Football Union | |
| Rg Roentgenium | |
| RG Republican Guard | |
| RGB Red Green Blue (colour model) | |
| RGBI Red Green Blue Intensity (ditto) | |
| Rh Rhodium | |
| RH Southern Rhodesia (ISO 3166 digram; obsolete 1980) | |
| RHIC Relativistic Heavy Ion Collider | |
| RHLI Royal Hamilton Light Infantry (Canadian militia regiment) | |
| RHO Southern Rhodesia (ISO 3166 trigram; obsolete 1980) | |
| RHS | |
| RHU Replacement Holding Unit | |
| RHWR Radar Homing and Warning Receiver ("raw" for short) | |
| RI Rex et Imperator, Regina et Imperatrix King-Emperor | |
| RI Rhode Island (postal symbol) | |
| RIAA Recording Industry Association of America | |
| RIBA Royal Institute of British Architects | |
| RIF Reduction In Force (layoffs),Resistance Index for Frostbite,ing Is Fundamental | |
| RIFA Red imported fire ant | |
| RILA Retail Industry Leaders Association | |
| RIM Remote integrated multiplexer, Australian term for a digital loop carrier,Research In Motion, former name of the BlackBerry company,Revolutionary Internationalist Movement (Maoist organization),Royal Indian Marine, former navy of British colonial India | |
| RIMVS Retinal Imaging Machine Vision System | |
| RINO Republican In Name Only[1] | |
| RIP (a/i) Relief In Place, requiesca[n]t in pace (Latin for "may he/she/they rest in peace") | |
| RIS Range Instrumentation System,Réseau Info Sports (French, roughly "Sports News Network" — Canadian French-language TV channel) | |
| RISC Reduced Instruction Set Computer | |
| RISD Rhode Island School of Design ("riz-dee") | |
| RISTA Reconnaissance, Intelligence, Surveillance, and Target Acquisition (see also ISTAR) | |
| RWH Rain Water Harvesting | |
| RJD Reduced Julian Day | |
| RKBA Right to Keep and Bear Arms (Second Amendment to the United States Constitution) | |
| RKI Robert Koch Institute, German governmental research institute in Berlin | |
| RKO Radio-Keith-Orpheum Pictures | |
| RL Release Line-Real Life | |
| RLP Recognised [Operating/Operational] Land Picture | |
| RLS Restless Leg Syndrome | |
| RLY Rally Point | |
| RM see separate disambiguation page | |
| rm Raeto-Romansh language (ISO 639-1 code) | |
| RMA Return Mailing Authorization-Revolution in Military Affairs-Rachel McAdams | |
| RMC Robert Menzies College | |
| RMC (ii) Royal Military College (Australia, Canada, UK) | |
| RMDA Records Management and Declassification Agency | |
| RMP Recognised [Operating/Operational] Maritime Picture | |
| RMS | |
| rn Rundi language (Kirundi) (ISO 639-1 code) | |
| Rn Radon | |
| RN Radio Netherlands | |
| RN Royal Navy-Registered Nurse (US) | |
| RNA RiboNucleic Acid | |
| RNAD Royal Naval Armaments Depot (UK) | |
| RNPS Radio Network Planning System | |
| RNZ Radio New Zealand | |
| RNZI Radio New Zealand International | |
| ro Romanian language (ISO 639-1 code) | |
| RO Range Only-Red Orchestra-Romania (ISO 3166 and FIPS 10-4 country code digram) | |
| ROA (a/i) Rate Of Ascent | |
| ROC (i/a) Receiver Operating Characteristic (statistics)- | |
| ROD (a/i) Rate Of Descent-Record Of Decisions-Report Of Discrepancy | |
| ROE Rules Of Engagement | |
| roh Raeto-Romansh language (ISO 639-2 code) | |
| ROH Ring of Honor | |
| ROI Return On Investment, Republic of Ireland. | |
| ROME Return On Modeling Effort | |
| ROFLOL Rolling On the Floor Laughing Out Loud | |
| ROK (a/i) Republic of Korea | |
| ROL Romanian leu (ISO 4217 currency code) | |
| ROM -Only Memory-Refuel On the Move-Royal Ontario Museum | |
| ron Romanian language (ISO 639-2 code) | |
| RON Romanian new leu (ISO 4217 currency code) | |
| ROP Render Output Pipeline | |
| ROPE Research Opportunity and Performance Evidence | |
| ROS Reactive Oxygen Species | |
| ROTC Reserve Officer Training Corps ("Rawt-Cee") | |
| ROU Romania (ISO 3166 trigram) | |
| ROV Remotely Operated Vehicle | |
| ROW Right Of Way-Rest Of the World | |
| ROWPU Reverse Osmosis Water Purification Unit ("roe-pew") | |
| ROZ (a/i) Restricted Operations Zone | |
| RP Philippines (FIPS 10-4 country code), Release Point,Role-Playing [relationship potential] | |
| RPA Regional Plan Association | |
| RPD Recognition-Primed Decision-making | |
| RPF Rwandan Patriotic Front | |
| RPG (US-CA) Regional Planning Group,Report Program Generator,Rocket Projectile Gun,Rocket-Propelled Grenade,Role-Playing Game | |
| RPL Reverse Polish Lisp | |
| rpm revolutions per minute | |
| RPM Records, Promotion, Music (expansion of the title of a former Canadian music magazine),Red Hat Package Manager | |
| RPN reverse Polish notation | |
| RPO Radiation Protection Officer, Regular Production Option,RPR FOM-(i/a) Realtime Platform Reference Federation Object Model ("reaper fomm") | |
| rps revolutions per second | |
| RPV Remotely Piloted Vehicle | |
| RQ Puerto Rico (FIPS 10-4 territory code) | |
| RRB -Railroad Retirement Board | |
| RRN Recurrence Rate Number | |
| RRP Recurrent Respiratory Papillomatosis | |
| RRS Racing Rules of Sailing | |
| RRSP Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.) | |
| RS Russia (FIPS 10-4 country code) | |
| RSA Regimental Support Area,Republic of South Africa,Rivest-Shamir-Adleman encryption, South Africa (IOC and FIFA trigram, but not ISO 3166) | |
| RSD Reflex Sympathetic Dystrophy, Serbian dinar (ISO 4217 currency code) | |
| RSEQ Réseau du sport étudiant du Québec (French, "Quebec Student Sports Network") | |
| RSI Repetitive Strain Injury | |
| RSJ Rolled Steel Joist (construction) | |
| RSN Real Soon Now (coined by author Jerry Pournelle) | |
| RSPB (UK) Royal Society for the Protection of Birds | |
| RSPCA Royal Society for the Prevention of Cruelty to Animals | |
| RSR Required Supply Rate | |
| RSRE UK Royal Signals and Radar Establishment (1976-1991) | |
| RSRI Red Sands Research Institute | |
| RSS Really Simple Syndication | |
| RSTA Reconnaissance, Surveillance, and Target Acquisition | |
| RSVP répondez s'il vous plaît (French for "respond if you please") | |
| RT Real Time-Radio Telephone-Return to duty | |
| RTA Road traffic accident (British) | |
| RTBF Radio-Télévision belge de la Communauté française | |
| RTCA RTCA, Inc. | |
| RTF Rich Text Format | |
| RTFM the Fucking/Fine Manual | |
| RTG Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane | |
| RTGS Royal Thai General System of Transcription-Real Time Gross Settlement | |
| RTI Run-Time Infrastructure (Simulation) | |
| RTL see entry | |
| RTLS Return to Launch Site-period in NASA Space Shuttle assent profile where, during assent, shuttle aborts assent and turns and glides back to landing strip at launch site | |
| RTP Real-time Transport Protocol | |
| RTS see entry | |
| RTT Round Trip Timing | |
| RTV Rapid Terrain Visualization ACTD-Retro Television Network | |
| ru Russian language (ISO 639-1 code) | |
| Ru Ruthenium | |
| RU Russia (ISO 3166 digram) | |
| RUB Russian ruble (ISO 4217 currency code) | |
| RuBisCO Ribulose-1,5-bisphosphate carboxylase/oxygenase (enzyme involved in carbon fixation) | |
| RUC Royal Ulster Constabulary | |
| run Rundi language (Kirundi) (ISO 639-2 code) | |
| rus Russian language (ISO 639-2 code) | |
| RUS Russia (ISO 3166 trigram) | |
| RUSI Royal United Services Institute for Defence Studies | |
| RV Reconnaissance Vehicle,Recreational Vehicle,Re-entry Vehicle,reciprocation void | |
| RVD Rijksvoorlichtingsdienst (Dutch, "Government Information Service"), Rob Van Dam (American professional wrestler),RW[edit] | |
| rw Rwanda language (Kinyarwanda) (ISO 639-1 code) | |
| RW Rwanda (ISO 3166 and FIPS 10-4 country code digram) | |
| RWA Rwanda (ISO 3166 trigram) | |
| RWADA Resident Weighted Average Daily Attendance (New York State term used in public education to indicate the size of a school district, i.e. its number of students) | |
| RWF Rwandan franc (ISO 4217 currency code) | |
| RWR Radar Warning Receiver | |
| RWS Remote Weapon Station | |
| Rx Medical prescription (possibly from Latin "recipere", "to take": see entry) | |
| RX Receive | |
| South Sulphur/Sulfur,S0-9[edit],S followed by a number is used to denote various German and Austrian S-train lines.,S4C — Sianel Pedwar Cymru (Welsh, "Channel Four Wales") | |
| S3 Alternative to SSS (e.g. Amazon S3) | |
| SA Sand (METAR Code),Saudi Arabia (ISO 3166 and FIPS 10-4 country's,code digram), Sexaholics Anonymous, sine anno (Latin, “without year”),Situational awareness,South Africa,(i/s) South Australia (postal symbol), Standards Australia,Sturmabteilung (German, “Storm Detachment”, Nazi forerunner and rival of SS),S.A.-designation for a corporation in many European countries; see article for meanings | |
| SAA Saudi Arabian Airlines, former name of Saudia,Sex Addicts Anonymous,South African Airways,Southern Athletic Association,Standards Association of Australia, a former name of Standards Australia,SAAB — Svenska Aeroplan AB (Swedish aircraft manufacturer; also refers to its former auto manufacturing arm),SAAFR — (a/i) Standard use Army Aircraft Flight Route (“safer”),SAAMI — Sporting Arms and Ammunition Manufacturers' Institute (“sammy”),SAARC — South Asian Association for Regional Cooperation,SAB — Soprano Alto Baritone,Sabena — Société anonyme belge d'exploitation de la navigation aérienne (French for “Belgian Company for Exploiting Aerial Navigation”, 1923-2001),SABIC — Saudi Basic Industries Corporation,SABR — Society for American Baseball Research | |
| SAC Standards Activity Committee (of SISO),U.S. Strategic Air Command (1946-1992),SACAT — Semi Attended Customer Activated Terminal (Supermarket checkout),SACEUR — Supreme Allied Commander EURope,SACLANT — Supreme Allied Commander atLANTic,SACLOS — Semi-Automatic Command to Line of Sight | |
| SAD Safford Regional Airport (IATA code), Seasonal Affective Disorder,Situational Awareness Display,SADD — originally Students Against Drunk Driving, now Students Against Destructive Decisions (U.S. national school-related group) | |
| SADL Situation Awareness Data Link (“saddle”),Structural Architecture Description Language | |
| SAE Society of Automotive Engineers[1],Stamped addressed envelope,SAFER — Steel And Foam Energy Reduction,SAFETY — Stopping Adults Facilitating the Exploitation of Today's Youth,SAFICT — Software Agents as Facilitators of Interoperability in Collective Training,sag — Sango language (ISO 639-2 code),SAG — Screen Actors Guild,SAGAT — Situation Awareness Global Assessment Technique,SAGE — Semi-Automatic Ground Environment (simulation),SAHB — Sensational Alex Harvey Band,SAIC — Science Applications International Corporation | |
| SALT (a/i) Save A Life Today (SALT) Alert; Emergency Contact System, Southern African Large Telescope,Strategic Arms Limitation s | |
| SAM Sequential-Access Memory,Sociedad Aeronáutica de Medellín,Surface-to-Air Missile | |
| Sambo (p/a) Samooborona bez oruzhiya (Russian: "Самооборона без оружия", literally "self-defense without weapons") | |
| san Sanskrit language (ISO 639-2 code), Storage Area Network | |
| SAR Saudi riyal (ISO 4217 currency code), Search And Rescue,Special Administrative Region,Synthetic Aperture Radar | |
| SARA Southeastern Association for Research in Astronomy,Scientific Atlanta Resident Application,Scottish Amateur Rowing Association,Southern African Railway Association,State Administration for Religious Affairs,SARP — Search And Rescue Processor,SARR — (i/a) Search And Rescue Repeater,SARS — Severe Acute Respiratory Syndrome | |
| SART Search and Rescue Transponder,Situational Awareness Rating Technique,SARU — South African Rugby Union | |
| SAS Scandinavian Airlines System,Second Avenue Subway,Situational Awareness System,Special Air Service,Studies, Analysis and Simulation,Side Angle Side, Statistical Analysis System (original meaning; SAS Institute Inc. has evolved far beyond that scope),SASE — Self-Addressed Stamped Envelope,SASO — Stability and Support Operations,SASOL — Suid Afrikaanse Steenkool en Oli.e. (Afrikaans, “South African Coal and Oil”) | |
| SAT formerly Scholastic Aptitude Test and Scholastic Assessment Test; now known solely by the initials,Small Arms Trainer,SATB — Soprano Alto Tenor Bass,SATNAV — Satellite Navigation (Increasingly common GPS based system in new vehicles),SATs — Standard Assessment Tasks and other similar terms describing tests used in English schools; see National Curriculum assessment#Terminology,SAU — Saudi Arabia (ISO 3166 trigram),SAVAK — Sazamane Etelaat va Amniate Kechvar (Iranian “Security and Intelligence Service”) | |
| SAW Squad Automatic Weapon,Surface acoustic wave,SAWE — Society of Allied Weight Engineers,SB[edit],Sb — Antimony (Latin Stibium) | |
| SbA Stibarsen, an alloy of antimony and arsenic | |
| SB Sexy Bitch,Sexy Bastard,Sexy Boy (disambiguation), Solomon Islands (ISO 3166 digram), Special Warfare Boat Operator | |
| SBA Santa Barbara Airport,Simulation-Based Acquisition,Sovereign Base Area,Student bar association,SBB — German for the Swiss Federal Railways | |
| SBC Sensotronic Brake Control,Single-Board Computer,Southern Baptist Convention,SBCCOM — U.S. Army Soldier and Biological Chemical Command (disbanded 2003),SBCS — Single-Byte Character Set,SBCT — Stryker Brigade Combat Team | |
| SBD Solomon Islands dollar (ISO 4217 currency code),Silent But Deadly | |
| SBP Samahang Basketbol ng Pilipinas (Filipino, "Basketball Federation of the Philippines"),U.S. School Breakfast Program,Society of Business Practitioners,State Bank of Pakistan | |
| SBS Special Boat Service,Special Broadcasting Service,Seoul Broadcasting System | |
| SBW Sonny Bill Williams (New Zealand dual-code rugby player),SC[edit],sc — Sardinian language (ISO 639-1 code),Sc — Scandium | |
| SC Cruiser Submarine (US Navy hull classification) c Saint Kitts and Nevis (FIPS 10-4 country code; from Saint Christopher),Seychelles (ISO 3166 digram),South Carolina (postal symbol) | |
| SCA Service Contract Act,Sexual Compulsives Anonymous,Society for Creative Anachronism,SCAP — Supreme Commander Allied Powers (Allied occupation of Japan),sccm — Standard cubic centimetre per minute (unit of measurement of fluid flow),sccs — Standard cubic centimetre per second (unit of measurement of fluid flow),scfh — Standard cubic foot per hour (unit of measurement of fluid flow),scfm — Standard cubic foot per minute (unit of measurement of fluid flow),scfs — Standard cubic foot per second (unit of measurement of fluid flow),SCG — Serbia and Montenegro (ISO 3166 trigram; defunct since 2006),SCHIMS — Soldier Combat Helmet Identification Marking System,SCHIP — State Children's Health Insurance Program (U.S.; often pronounced "ess-chip"),SciFi — Science Fiction,sCJD — Sporadic Creutzfeldt-Jakob disease,SCM — Surface Contamination Module,SCMODS — State, County, Municipal Offender Data System,SCN — Suprachiasmatic Nucleus,SCNT — Somatic Cell Nuclear Transfer | |
| SCO Santa Cruz Operation (initials later used by SCO Group), Scotland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram), Shanghai Cooperation Organization,SCOTUS — Supreme Court of the United States,SCR — Seychelles rupee (ISO 4217 currency code),SCRAM — Safety Control Rod Axe Man | |
| SCS Scan Correlated Shift,Soil Conservation Service | |
| SCSI Small Computer System Interface (“scuzzy”), Strategic and Combat Studies Institute,SCT — Scattered Sky (METAR Code),SCTP — Stream Control Transmission Protocol,Scuba — Self Contained Underwater Breathing Apparatus,SCUF — Slow Continuous Ultrafiltration,SCUFN — Sub-Committee on Undersea Feature Names (of GEBCO),SD[edit],sd — Sindhi language (ISO 639-1 code) | |
| SD Secure Digital (memory card format),Sheriff's department,Smoke/Decontamination, South Dakota (postal symbol),Sudan (ISO 3166 digram) | |
| SDC Shaft Driven Compressor,U.S. Army Strategic Defense Command (1985-1992),SDG — Sudanese pound (ISO 4217 currency code),SDG — Sum Dum Goy-greasy spoon chinese restaurant,SDH — Synchronous Digital Hierarchy | |
| SDHC Secure Digital High Capacity | |
| SDXC Secure Digital eXtended Capacity | |
| SE Seychelles (FIPS 10-4 country code), Societas Europaea (form of business organization in the EU),South-east, Sweden (ISO 3166 digram), Synthetic Environment,System Engineering,SEAD — Suppression of Enemy Air Defence,SEADI — Senior Executioner of Approved Driving Instructors,SEAFDEC — Southeast Asian Fisheries Development Center,SEAL — SEa-Air-Land,SEAT — Sociedad Española de Automóviles de Turismo (Spanish for "Spanish Touring Car Company"),SEATO — Southeast Asia Treaty Organization,SeaWiFS — Sea-Viewing Wide Field of View Sensor (satellite instrument) | |
| SEC U.S. Securities and Exchange Commission, Security,Southeastern Conference | |
| SECaaS Security-as-a-Service | |
| SEM (i/a) Sensor Employment Manager,Switch to Email Mode, i.e. stop texting as it is more disruptive by making a sound or vibrating and email instead, for a given time | |
| SEN Senegal (ISO 3166 trigram), Small Extension Node | |
| SEP Somebody Else’s Problem,Spherical Error Probable,System Enhancement Package,System Engineering Plan,SEPTA — Southeastern Pennsylvania Rapid-Transit Authority,SERE — Survival, Evasion, Resistance and Escape,SESSPE — Submarine Escape and Surface Survival Personnel Equipment,SET — Staphylococcal EnteroToxin,SETI — Search for ExtraTerrestrial Intelligence,SETAC — Society for Environmental Toxicology and Chemistry | |
| SEU Single Event Upset (solid state physics),Slightly Enriched Uranium,Special Evidence Unit,SF[edit] | |
| SF Fleet Submarine (retired US Navy hull classification), San Francisco,Science fiction, South Africa (FIPS 10-4 country code), Speculative fiction,Special Forces | |
| SFA Sales force automation,Saturated fatty acid,Scottish Football Association,Stephen F. Austin (State University),Sudan Football Association | |
| SFE Supercritical fluid extraction,Sydney Futures Exchange,SFF — Standard File Format,sf&f — Science fiction & fantasy,SFM — Switch to Facebook Mode, i.e. to message someone on Facebook instead of texting as it is less disruptive in the sense of the phone not making sound or vibrating, for a period of time,SFOB — Special Forces Operations Base,SFOR — UN Stabilisation Force (in Bosnia and Herzegovina),SFU — Simon Fraser University (Canada),SG[edit],sg — Sango language (ISO 639-1 code),Sg — Seaborgium | |
| SG Senegal (FIPS 10-4 country code),Singapore (ISO 3166 digram),Snow Grains (METAR Code), Study Group | |
| SGC Server Gated Cryptography, Stargate Command,SGD — Singapore dollar (ISO 4217 currency code),SGML — Standard Generalized Markup Language,SGP — Singapore (ISO 3166 trigram) | |
| SGS South Georgia and the South Sandwich Islands (ISO 3166 trigram), Svalbard Ground Station (Landsat),Société Générale de Surveillance,SH[edit],sh — Serbo-Croatian language (ISO 639-1 code) | |
| SH Saint Helena (ISO 3166 digram), SONATRACH (Algerian petroleum company) | |
| SHAC Stop Huntingdon Animal Cruelty,Student Health Action Coalition,SHAPE — Supreme Headquarters Allied Powers Europe,SHF — Super High Frequency,SHN — Saint Helena (ISO 3166 trigram) | |
| SHO Showtime (see also sho.com) | |
| SI Slovenia (ISO 3166 and FIPS 10-4 country code digram), Socialist International,Sports Illustrated,Système International (French, International System of Units),SIA — Singapore Airlines (ICAO code),SIA — Survivors of Incest Anonymous,SIAM — Society for Industrial and Applied Mathematics,SIC — Standard Industrial Classification,SICS — (a/i) Swedish Institute of Computer Science,SIDS — Sudden infant death syndrome,SIDU — select, insert, delete, update. See Create, read, update and delete,SIF — Selective Identification Feature,SIFF — Successor IFF | |
| SIG Schweizerische Industrie Gesellschaft (German, "Swiss Industry Company"). See also SIG Sauer, a firearms manufacturer spun off from the aforementioned company in 2000., .signature (UNIX shell/Internet standard file name),(a/i) Special Interest Group,SIGCAT — Special Interest Group for CD-ROM Applications and Technology,SIGINT — Signals Intelligence,SIGMET — Significant Meteorological Information | |
| SIIT Saskatchewan Indian Institute of Technologies (Canadian university),Sirindhorn International Institute of Technology (Thai university),Stateless IP/ICMP Translation algorithm,SIMAC — Semantic Interaction with Music Audio Contents,SIMLAS — Soldier Integrated Multipurpose Laser System,SIMM — Single In-line Memory Module,SIMNET — SIMulator NETwork, later SIMulation NETwork,SIMNET-D-SIMNET-Developmental,SIMP — Strongly Interacting Massive Particle | |
| SIMPLE Satellite Interactive Multimedia Platform for Low-cost Earth stations, Savings Incentive Match Plan for Employees (as used in SIMPLE IRA), Standard Interface for Multiple Platform Link Evaluation (NATO STANAG 5602),sin — Sinhalese language (ISO 639-2 code),SIN — Social Insurance Number (Canada),SINCGARS — SINgle Channel Ground and Airborne Radio System | |
| SIP Session Initiation Protocol,State Implementation Plan,System Improvement Program,Systematic Investment Plan,SIPP — Self-Invested Personal Pension | |
| Siri Speech Interpretation and Recognition Interface (Apple iOS software) | |
| SIRI Service Interface for Real Time Information | |
| SISO Simulation Interoperability Standards Organization,Society of Independent Show Organizers,SIW — Simulation Interoperability Workshop,SIYSS — Stockholm International Youth Science Seminar,SJ[edit] | |
| SJ Svalbard and Jan Mayen (ISO 3166 digram), Societas Iesu (Latin: The Society of Jesus, the Jesuit order), Statens Järnvägar (Swedish State Railways),SJA — Staff Judge Advocate (military law),SJC — Supreme Judicial Court of Massachusetts (note: the highest court in the state of Maine is also called the Supreme Judicial Court),SJM — Svalbard and Jan Mayen (ISO 3166 trigram),SK[edit],sk — Slovak language (ISO 639-1 code) | |
| SK Saskatchewan (postal symbol),Slovakia (ISO 3166 digram),SKC — Clear Sky (METAR Code),SKK — Slovak koruna (ISO 4217 currency code),SKM — Sikkim (ISO 3166 trigram; obsolete 1975) | |
| SKU | |
| SL Sierra Leone (ISO 3166 and FIPS 10-4 country code digram), Start Line | |
| SLA Service Level Agreement,Symbionese Liberation Army,SLAA — Sex and Love Addicts Anonymous,SLAC — Stanford Linear Accelerator Center,SLAN — sine loco, anno, nomine (Latin, “without place, year, or name”),SLAPP — Strategic lawsuit against public participation,SLB — Solomon Islands (ISO 3166 trigram),SLBM — Sea/Submarine-Launched Ballistic Missile,SLC — Scan Line Corrector,SLE — Sierra Leone (ISO 3166 trigram),SLI/SLi,(i/s) Scan-Line Interleave,Scalable Link Interface,SLIT — SubLingual ImmunoTherapy,slk — Slovak language (ISO 639-2 code),SLL — Sierra Leone leone (ISO 4217 currency code),SLO — Slovenia (IOC trigram, but not FIFA or ISO 3166) | |
| SLOC Sea Lines Of Communication,Source Lines Of Code,SLORC — State Law and Order Restoration Council (of Burma) | |
| SLP Sea Level Pressure, Super Long Play,slph — Standard litre per hour (air flow),slpm — Standard litre per minute (air flow),slps — Standard litre per second (air flow),SLR — Single-Lens Reflex (camera) | |
| SLT Single Lens Translucent, Speech and language therapist, Solid Logic Technology (electronics),Swing Landing Trainer (paratroops),Secondary lymphoid tissue,slv — Slovenian language (ISO 639-2 code),SLV — El Salvador (ISO 3166 trigram),SM[edit],sm — Samoan language (ISO 639-1 code),Sm — Samarium | |
| SM Sado-Masochism, San Marino (ISO 3166 and FIPS 10-4 country code digram), Soldier's Manual, Submarine Minelayer (US Navy hull classification),SMA — Scan Mirror Assembly,SMART — Subject Matter And Requirements Team,SMART — Self-Monitoring, Analysis and Reporting Technology,SMASS — Small Main-Belt Asteroid Spectroscopic Survey,SMCT — Soldier's Manual of Common Tasks,SMD — Surface Mount Device,SMDR — Station Message Detail Recording,sme — Northern Sami language (ISO 639-2 code) | |
| SME Scan Mirror Electronics,Subject Matter Expert | |
| SMG Sequential Motorsport Gearbox,SubMachine Gun,SMH — Shaking My Head,SMil — Sadomasochisterne i landet (Danish SM organisation),SMIL — Synchronized Multimedia Integration Language,smo — Samoan language (ISO 639-2 code),SMP — Standard Military Pattern,SM&R — Source, Maintenance, and Recoverability,SMR — San Marino (ISO 3166 trigram),SMS — many, including: Short message service; see entry,SMTP — Simple Mail Transfer Protocol,SMU — Southern Methodist University | |
| SMX many, including: Server Macro Expansion, Solaris MINIX, Spatial multiplexing, Sulfamethoxazole; see entry | |
| SMZ many, including: Silver Mt. Zion, Sulfamethazine, Sulfamethoxazole; see entry,SN[edit],sn — Shona language (ISO 639-1 code),Sn — Tin (Latin Stannum) | |
| SN Senegal (ISO 3166 digram),Singapore (FIPS 10-4 country code),Snow (METAR Code),SuperNova,Screen Name,sna — Shona language (ISO 639-2 code),SNAFU — “Situation Normal — All Fouled/Fucked Up”,SNAP — Supernova/Acceleration Probe,SNCB — Société nationale des chemins de fer de Belgique (French for “Belgian Railways National Society”, NMBS in Dutch),SNCF — Société nationale des chemins de fer français (French for “French Railways National Society”),snd — Sindhi language (ISO 639-2 code),SND — Standard Nomenclature Database,SNE — Synthetic Natural Environment,SNES — Super Nintendo Entertainment System,SNÉTA — Syndicat national pour l'étude des transports aériens (French for “Aerial transport Study National Syndicate”, 1919-1923),SNG — Satellite News Gathering (television) | |
| SNL Saturday Night Live (television), Società Navigazione del Lago di Lugano,SNM — Special Nuclear Material,SNMP — Simple Network Management Protocol,SNOBOL — StriNg Oriented symBOlic Language,SNP — Single-nucleotide polymorphism | |
| SNR SuperNova Remnant,Signal-to-Noise Ratio,SNRI — Serotonin-Norepinephrine Reuptake Inhibitor,SNS — Spallation Neutron Source,SNU — Solar Neutrino Unit,SO[edit],so — Somali language (ISO 639-1 code) | |
| SO Shared Object (Unix),Sheriff's Office,Significant other, Somalia (ISO 3166 and FIPS 10-4 country code digram) | |
| SOA service-oriented architecture, Society of Actuaries, State of the art | |
| SOAP Simple Object Access Protocol,Supplemental Offer and Acceptance Program (U.S. medical residency matching) | |
| SOB Son Of a Bitch,Same Old Bullshit,SOC — Sector Operations Centre,SOCCSKSARGEN — South Cotabato, Cotabato, Sultan Kudarat, Sarangani, General Santos City (a region in the Philippines; pronounced “sock-sar-gen”),SOCOM — (U.S.) Special Operations Command | |
| SoCon Southern Conference (U.S. college sports) | |
| SOD (i/a) School Of Dentistry,Statement Of Difference[s],Statement Of Direction,Statement Of Documentation,Statement Of Duty/Duties | |
| SOE Secret Of Evermore,Special Operations Executive (WWII British organization),State Of Emissions (EW) | |
| SOF (a/i) Special Operations Force,Status of Forces,SOFIA — Stratospheric Observatory For Infrared Astronomy | |
| SOGAT Society of Graphical and Allied Trades,Former British printing union,SOHC — Single-OverHead-Cam engine,SOHO — Solar and Heliospheric Observatory,SOI — Signal Operating Instruction,SOL — Shit Out of Luck,SOLIS — Synoptic Optical Long-term Investigations of the Sun,som — Somali language (ISO 639-2 code) | |
| SOM Simulation Object Model, Somalia (ISO 3166 trigram),Sonar — SOund Navigation And Ranging | |
| SOP Standing/Standard Operating Procedure,State of Play | |
| SOR State Of iness,Statement Of Requirements | |
| SOS Somali shilling (ISO 4217 currency code),Save Our Souls,SOSTAR — Stand-Off Surveillance and Target Acquisition Radar,sot — Sotho language (ISO 639-2 code),SOUTHAG — Southern Army Group,SOUTHCOM — (U.S.) Southern Command,SOV — Single Occupant Vehicle,SOW — Statement Of Work,SOWHAT — RESNA Subcommittee on Wheelchairs and Transportation,SOX — Sarbanes-Oxley Act,SP[edit] | |
| Sp Special,Spring tide (nautical charts), sine prole (Latin, “without offspring”) | |
| SP Security Police,Self-Propelled,Shore Patrol, Spain (FIPS 10-4 country code), Start Point,Strong Point,spa — Spanish language (ISO 639-2 code),SPAAG — Self-Propelled Anti-Aircraft Gun,SPACECOM — (U.S.) Space Command,Spaser — Surface plasmon amplification by stimulated emission of radiation,SPC — Secretariat of the Pacific Community,SPCO — Single-Pole Change Over | |
| SPD Shimano Pedaling Dynamics,Sozialdemokratische Partei Deutschlands (Social Democratic Party of Germany),SPDT — Single-Pole Double-Throw,SPEAC — Stop Primate Experiments at Cambridge (later became SPEAK),SPECTRE — SPecial Executive for Counter-intelligence, Terrorism, Revenge and Extortion,S.P.E.A.R.-Spontaneous Protection Enabling Accelerated Response,SPEED — Subsistence Preparation by Electronic Energy Diffusion (early military microwave oven),SPIE — originally the Society for Photo-Optical Instrumentation Engineers (“SPIE — The International Society for Optical Engineering” 1981-2007, “SPIE” since 2007) | |
| SPL Scottish Premier League,Superior Parietal Lobule,Sound Pressure Level,SPM — Saint Pierre and Miquelon (ISO 3166 trigram),SPOD — (a/i) Sea Port of Debarkation,SPOE — (a/i) Sea Port of Embarkation,SPOT — Satellite pour l'observation de la Terre (French, “Satellite for Earth Observation”),SPQR — Senatus Populusque Romanus (Latin “The Senate and the People of Rome”),sps — sine prole superstite (Latin, “without surviving issue”),SPS — Standard Positioning Service (GPS),SPST — Single-Pole Single-Throw,SQ[edit],sq — Albanian language (ISO 639-1 code),SQ — Sound Quality,SQ — Standard Quality,sqi — Albanian language (ISO 639-2 code),SQL — (i/a) Structured Query Language (“seek-well”),SQUID — Superconducting QUantum Interference Device,SQOR — Succinate:Quinone OxidoReductase, enzyme superfamily including quinone-linked succinate dehydrogenase and fumarate reductase,SR[edit],sr — Serbian language (ISO 639-1 code),Sr — Strontium | |
| SR Sound Reinforcement,Supply Route, Suriname (ISO 3166 digram), Sveriges Radio (Swedish Radio Ltd),SR — Sustained release of a drug | |
| SRAM Scott (King), Ray (Day), SAM (Patterson) — founders of bicycle component manufacturer SRAM Corporation, Static Random Access Memory (“ess-ram”),SR-ATGW — Short-Range Anti-Tank Guided Weapon,SRB — Solid Rocket Booster,SRBM — Short-Range Ballistic Missile (cf. IRBM, ICBM),SRC — Scheduled Removal Component,srd — Sardinian language (ISO 639-2 code) | |
| SRD Science Requirements Document, Surinam dollar (ISO 4217 currency code),SREL — Savannah River Ecology Laboratory | |
| SRG SACEUR Rover Group,Special Republican Guard,SRGW — Short-Range Guided Weapon | |
| SRL Savannah River Laboratory,Single Rocket Launcher,Survival Research Labs,SRM — Specified Risk Material,srp — Serbian language (ISO 639-2 code),SRS — Savannah River Site,SRSP — Science and Religion in Schools Project,SRTP — [Secure Real-time Transport Protocol],SS[edit],ss — Swati language (ISO 639-1 code) | |
| SS Sand Storm (METAR Code), Schutzstaffel (German, roughly "Protection Squadron"; Nazi elite Praetorian guard), U.S. Secret Service,Spanish Ship,Stainless steel,Stockholm Skins, Submarine (US Navy hull classification), Super Sport,Surface-to-Surface (missile) | |
| SSA Cargo Submarine (US Navy hull classification), Social Security Administration (U.S.),Statistics South Africa,SSB — Single-sideband modulation,SSB — Sacramento Sustainable Business,SSBN — Nuclear-Powered Ballistic Missile Submarine (US Navy hull classification) | |
| SSC Safe, Sane, Consensual (SM phrase),Secondary Somatosensory Cortex,Smaller-Scale Contingency,U.S. Army Soldiers System Center (Natick, Massachusetts),Superconducting Super Collider,SSCCATAGAPP — Singles, Seniors, Childless Couples, And Teens And Gays Against Parasitic Parents (fictional organization from The Simpsons) | |
| SSD Solid-state drive, South Sudan (ISO 3166 trigram),SSDC — U.S. Space and Strategic Defense Command | |
| SSDD Same Shit, Different Day,Single-Sided Double-Density (floppy disk) | |
| SSE South South-East, Streaming SIMD Extensions,SSG — Guided Missile Submarine (retired US Navy hull classification),SSGN — Nuclear-Powered Guided Missile Submarine (US Navy hull classification),SSH — Saffir-Simpson Hurricane scale,SSK — Hunter-Killer Submarine (retired US Navy hull classification),SSKP — Single-Shot Kill Probability,SSL — Secure Sockets Layer,SSM — Surface-to-Surface (Guided) Missile | |
| SSN Nuclear-Powered Attack Submarine (US Navy hull classification), SIM Serial Number,Social Security Number (U.S.),Socialist Solidarity Network,Subsystem number (SCCP, SS7),SSNW — Same Shit, New Wrapping,SSO — Submarine Oiler (retired US Navy hull classification),SSP — Submarine Transport (retired US Navy hull classification) | |
| SSR Radar Picket Submarine (retired US Navy hull classification), Solid State Recorder | |
| SSRI Selective Serotonin Reuptake Inhibitor,Social Systems Research Institute | |
| SSRN Social Science Research Network, Nuclear-Powered Radar Picket Submarine (retired US Navy hull classification) | |
| SSS Siding Spring Survey,Side Side Side (an acronym for remembering congruent triangles), Sigue Sigue Sputnik (band),S/SSM — Surface-to-Subsurface Missile | |
| SST SuperSonic Transport, Training Submarine (US Navy hull classification),Saturated Suction Temperature (refrigeration cycles),SSTO — Single-Stage To Orbit,SSV — Soft-Skinned Vehicle (i.e., unarmoured),ssw — Swati language (ISO 639-2 code),SSW — South South-West,ST[edit],st — Sotho language (ISO 639-1 code) | |
| ST Saint Lucia (FIPS 10-4 country code),São Tomé and Príncipe (ISO 3166 digram) | |
| STA Scheduled Time of Arrival,Surveillance and Target Acquisition,STAG — (U.S.) Strategy and Tactics Group,STAGE — Scenario Toolkit And Generation Environment,STANAG — (NATO) Standardisation Agreement | |
| STAR Scientific and Technical Aerospace Reports (NASA),Simulation of Tactical Alternative Responses,Special Threat Analysis and Recognition | |
| STAT Signal Transducers and Activators of Transcription (cell biology),Special Tertiary Admissions Test (Australia) | |
| STB Surface Transportation Board[2] | |
| STD São Tomé and Príncipe dobra (ISO 4217 currency code), Sexually Transmitted Disease,STDM — Statistical Time Division Multiplexing | |
| STEM Scanning transmission electron microscopy,Science, technology, engineering, and mathematics, Spatiaotemporal Epidemiological Modeler (IBM-developed software),STENTOR — Satellite de télécommunications pour expérimenter de nouvelles technologies en orbite (French, “Orbital New Technology Experimental Telecommunications Satellite”) | |
| STFU Southern Tenant Farmers Union,Stuff You[citation needed],"Shut the fuck up!"',STH — Sonic The Hedgehog | |
| STI Sexually Transmitted Infection,Subaru Tecnica International,STK — Satellite Tool Kit,STM — Short Term Memory,STOL — Short Take-Off and Landing,STOVL — Short Take-Off and Vertical Landing | |
| STP São Tomé and Príncipe (ISO 3166 trigram), Standard Temperature and Pressure,STR — Short Tandem Repeat (DNA analysis),STRATCOM — United States Strategic Command | |
| STRICOM U.S. Army Simulation, Training & Instrumentation Command (1992-),Strike Command (1962-1971),STRIVE — Synthetic Tactical Real-time Interactive Virtual Environment,STSM — Senior Technical Staff Member,Stuka — Sturzkampfflugzeug (German WWII dive bomber),SU[edit],su — Sundanese language (ISO 639-1 code) | |
| SU Soviet Union (ISO 3166 digram; obsolete 1992),Sudan (FIPS 10-4 country code),SUB — Student Union Building,SuD — Subject under Discussion,SUDC — Swedish United Dawah Center, a salafist Islamic organisation in Sweden | |
| SUI Sonic user interface, Switzerland (IOC and FIFA trigram, but not ISO 3166),SUK — Start Up Kit,sun — Sundanese language (ISO 639-2 code),SUN — ,Soviet Union (ISO 3166 trigram; obsolete 1992),Stanford University Network that led to Sun Microsystems,SUNY — State University of New York (usually pronounced “sue-knee”),SUR — Suriname (ISO 3166 trigram),SURTASS — Surveillance Towed Array Sensor System,SUSAT — Sight Unit Small Arms, Trilux,SUV — Sport Utility Vehicle,SV[edit],sv — Swedish language (ISO 639-1 code) | |
| SV El Salvador (ISO 3166 digram), Sportverein (German for “Sport Association”, as in Hamburger SV and SV Werder Bremen),SVC — Secondary Visual Cortex,SvD — Svenska Dagbladet (Swedish newspaper) | |
| SVD Singular Value Decomposition,Snaiperskaya Vintovka Dragunova (Снайперская винтовка Драгунова, Russian for “Dragunov Sniper Rifle”),SVG — Scalable Vector Graphics,SVK — Slovakia (ISO 3166 trigram) | |
| SVM Stroboscopic effect Visibility Measure, Support Vector Machine (artificial intelligence),SVN — Slovenia (ISO 3166 and FIFA trigram),SVO — subject-verb-object,SVR — Sluzhba Vneshney Razvedki (Служба Внешней Разведки, Russian for "Foreign Intelligence Service"),SW[edit],sw — Swahili language (ISO 639-1 code) | |
| SW South-West ordinal direction,Sweden (FIPS 10-4 country code), Shortwave,swa — Swahili language (ISO 639-2 code) | |
| SWA (i/a) Secure Web Access,South-West Asia,SWAC — Southwestern Athletic Conference,SWALK — Sealed With A Loving Kiss,SWAN — System for Wearable Audio Navigation,SWAP — Surface Waters Acidification Programme,SWAPO — South-West Africa People's Organisation,SWAT — Special Weapons And Tactics,swe — Swedish language (ISO 639-2 code),SWE — Sweden (ISO 3166 trigram) | |
| SWF Shockwave Flash file (“swiff”),Single White Female | |
| SWG Surface Warfare Group,Symbology Working Group,SWHR — Society for Women's Health Research,SWIG — Simplified Wrapper and Interface Generator,SWIR — (a/i) Short Wave InfraRed (“ss-why-are” or “swhirr”) | |
| SWLABR She Was Like A Bearded Rainbow,Cream song (Bruce, Clapton and Baker),SWORD — Subjective WORkload Dominance,SWORDS — Special Weapons Observation Reconnaissance Detection System,SWOT — Strengths, Weaknesses, Opportunities, Threats (mnemonic) | |
| SWP Special Working Party (“swipp”),Systematic Westing Plan (a plan of periodic westing of shares or mutual funds worth a fixed amount of money),Skill with prize (UK pub quiz machines — quality titles include: Pub Quiz, Quiz City, Frog in a Liquidizer, Who Wants To Win a Tenner?),SWT — Sea Water Tank,SWV — Sisters With Voices (American female R&B vocal group),SWZ — Swaziland (ISO 3166 trigram),SX[edit],SX — Sonic X | |
| SXM Scanning X-ray Microscope, Sint Maarten (ISO 3166 trigram), Stream X-Machine,SY[edit],SY — Syria (ISO 3166 and FIPS 10-4 country code digram),SYC — Seychelles (ISO 3166 trigram),SYLK — Microsoft 'Symbolic Link' data file format,SYP — Syrian pound (ISO 4217 currency code),SYR — Syria (ISO 3166 trigram),Syriza — Synaspismós Rizospastikís Aristerás (Greek Συνασπισμός Ριζοσπαστικής Αριστεράς,"Coalition of the Radical Left"),SysML — System Modeling Language,Sysop — System Operator,SZ[edit] | |
| SZ Swaziland (ISO 3166 digram),Switzerland (FIPS 10-4 country code),SZL — Swaziland lilangeni (ISO 4217 currency code),References[edit],^ Society of Automotive Engineers,^ Replaced Interstate Commerce Commission on January 1st, 1996,vteList of acronyms,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z,Retrieved from "https://en.wikipedia.org/w/index.php?title=List_of_acronyms:_S&oldid=884129123",Categories: Lists of acronymsHidden categories: All articles with unsourced statementss with unsourced statements from December 2015,Navigation menu,Personal tools,Not logged inContributionsCreate accountLog in,Namespaces,,,,View history, | |
| T Tera-Tesla-Tritium | |
| ta Tamil language (ISO 639-1 code) | |
| Ta Tantalum | |
| TA Target Acquisition-Teaching Assistant-Tera-ampere-Territorial Army (UK)-Tristan da Cunha (ISO 3166 digram) | |
| TAA Transparency Anti-Aliasing-Trans Australia Airlines | |
| TAACOM U.S. Theater Army Area Command | |
| TAADCOORD Theatre Army Air Defence Co-ordinator | |
| TAAR Trace Amine-Associated Receptor | |
| TAC U.S. Tactical Air Command (1946-1992) | |
| TACAMO Take Charge and Move Out (U.S. military) | |
| TACAN Tactical Air Navigation | |
| TACC Tactical Air Control Centre-(USAF) Tanker Airlift Control Center | |
| TACCO Tactical Coordinator | |
| TACCSF U.S. Theater Aerospace Command & Control Simulation Facility | |
| TACDAR Tactical Detection And Reporting | |
| TACP Tactical Air Control Party-Technology Applications Certification Program | |
| TACSOP Tactical SOP (Standing Operating Procedure) | |
| TADIL Tactical Digital Information Link | |
| TADL Tactical Air Data Link ("taddle") | |
| TADSS Training Aids, Devices, Simulators, and Simulations | |
| TAF Trading Activity Fee assessed by FINRA to recover the costs of supervising and regulating firms. | |
| tah Tahitian language (ISO 639-2 code) | |
| TAI Target[ed] Area of Interest | |
| TAJ Tom and Jerry | |
| TAJT Tom and Jerry Tales | |
| TALES Technical Advice and Lexicon for Enabling Simulation | |
| tam Tamil language (ISO 639-2 code) | |
| TAN Tanzania (IOC and FIFA trigram, but not ISO 3166) | |
| TANJ There Ain't No Justice (used as expletive in the Ringworld novels) | |
| TANP Terrain-Aware Network Planner | |
| TANSTAAFL There Ain't No Such Thing As A Free Lunch (coined by author Robert A. Heinlein in his The Moon Is a Harsh Mistress) | |
| TAPPS Texas Association of Private and Parochial Schools | |
| TARDIS Time And Relative Dimension In Space (from Doctor Who) | |
| TARP Transparency Accountability Rights for Parents (coined by Karen Plumridge, founder of Black Ribbon Gold Heart) | |
| TAROT Télescope à action rapide pour les objets transitoires (French, "Transient Object Rapid Action Telescope") | |
| TAS Tasmania (postal symbol) | |
| TASER Thomas A. Swift's Electric Rifle | |
| TASM Tactical Air-to-Surface Missile | |
| tat Tatar language (ISO 639-2 code) | |
| TAT Tourism Authority of Thailand | |
| TATP TriAcetone TriPeroxide | |
| TATT Tired All The Time (medical diagnosis in-joke) | |
| Tb Terbium | |
| TB Tuberculosis | |
| TBA to be announced | |
| TBBPA TetraBromoBisPhenol-A | |
| TBC to be confirmed, to be continued | |
| TBD "to be documented", "to be determined", or "to be decided" | |
| TBD Torpedo Boat Destroyer | |
| TBF To be fair | |
| TBGRI Tropical Botanic Garden and Research Institute, India | |
| TBH To Be Honest | |
| TBL Turkish Basketball League | |
| TBM Tactical Ballistic Missile-Theatre Ballistic Missile | |
| TBS Turner Broadcasting System | |
| TBT Tributyltin | |
| Tc Technetium | |
| TC Teracoulomb-Turks and Caicos (ISO 3166 digram)-United Arab Emirates (FIPS 10-4 country code; from Trucial Coast States) | |
| TCA Transformational Communications Architecture-Turks and Caicos (ISO 3166 trigram) | |
| TCAS Traffic Collision Avoidance System | |
| TCAA Top Counter-Assault Agents | |
| TCCCS (i/a) Tactical Command, Control and Communication System ("ticks") | |
| TCD Chad (ISO 3166 trigram) | |
| TCG Trusted Computing Group-Türkiye Cumhuriyeti Gemisi | |
| TCHD Truck Cargo Heavy Duty | |
| TCL Tool Command Language | |
| TCM Turner Classic Movies | |
| TCP Traffic Control Point-Transmission Control Protocol-Trichlorophenol | |
| TCU Texas Christian University | |
| TCWMS Tele-Center Workforce Management System | |
| TCW Tasty Coma Wife | |
| TCC Tarrant County College | |
| Tc Technetium | |
| TC Teracoulomb-Turks and Caicos (ISO 3166 digram)-United Arab Emirates (FIPS 10-4 country code; from Trucial Coast States) | |
| TCA Transformational Communications Architecture-Turks and Caicos (ISO 3166 trigram) | |
| TCAS Traffic Collision Avoidance System | |
| TCAA Top Counter-Assault Agents | |
| TCCCS (i/a) Tactical Command, Control and Communication System ("ticks") | |
| TCD Chad (ISO 3166 trigram) | |
| TCG Trusted Computing Group-Türkiye Cumhuriyeti Gemisi | |
| TCHD Truck Cargo Heavy Duty | |
| TCL Tool Command Language | |
| TCM Turner Classic Movies | |
| TCP Traffic Control Point-Transmission Control Protocol-Trichlorophenol | |
| TCU Texas Christian University | |
| TCWMS Tele-Center Workforce Management System | |
| TCW Tasty Coma Wife | |
| te Telugu language (ISO 639-1 code) | |
| Te Tellurium | |
| TE Tactical Exploitation-Testosterone to Epitestosterone ratio-Tight end (American football; position generally not used in modern Canadian football) | |
| TEAL Tasman Empire Airways Limited | |
| Team Together everyone achieves more | |
| TEAMS The East African Marine System (fiber optic cable) | |
| TED Technology Entertainment Design prize | |
| TEETH Tried Everything Else, Try Homeopathy (medical diagnosis in-joke) | |
| tel Telugu language (ISO 639-2 code) | |
| TEL (a/i) Transporter, Erector and Launcher | |
| TELAR Transporter, Erector, Launcher And Radar | |
| TEMO Training, Exercise, and Military Operations | |
| TENCAP Tactical Exploitation of National Capabilities | |
| TERS Tactical Event Reporting System | |
| TES Tactical Event System | |
| TEST Thesaurus of Engineering and Scientific Terms | |
| TEU Twenty-foot equivalent unit (cargo capacity) | |
| TeVeS Tensor Vector Scalar theory | |
| TF | |
| TFMPP Trifluorophenylmethylpiperazine | |
| TFR Total Fertility Rate | |
| TFT Thin-Film Transistor | |
| TFTP | |
| tg Tajik language (ISO 639-1 code) | |
| Tg Teragram | |
| TG Togo (ISO 3166 digram) | |
| TGA Tonga (IOC and FIFA trigram, but not ISO 3166) | |
| TGB Tres grande bibliothèque (French, "Very Large Library"), a sarcastic nickname for the Bibliothèque nationale de France | |
| TGIF Thank God It's Friday, Toes Go In First | |
| tgk Tajik language (ISO 639-2 code) | |
| tgl Tagalog language (ISO 639-2 code) | |
| TGO Togo (ISO 3166 trigram) | |
| TGT Target (also the ticker symbol for Target Corporation), Ticket Granting Ticket (computer security), Tyrese, Ginuwine, Tank-see TGT (group) for their collaboration | |
| TGV Tanjong Golden Village (Malaysian cinema chain), Tanora malaGasy Vonona (Malagasy, "Young Malagasies Determined"-political party), Test Generation with Verification,Train à grande vitesse (French for "High-Speed Train"),TH[edit] | |
| th Thai language (ISO 639-1 code) | |
| Th Thorium | |
| TH Terahenry-Thailand (ISO 3166 and FIPS 10-4 country code digram) | |
| tha Thai language (ISO 639-2 code) | |
| THA Thailand (ISO 3166 trigram) | |
| THAAD (a/i) Terminal High Altitude Area Defence | |
| THB Thai baht (ISO 4217 currency code) | |
| THEGENTRY The High-End Group of Earth's New Technologies Research Yield | |
| THEL Tactical High Energy Laser ACTD | |
| THG Tetrahydrogestrinone | |
| ThG Graduate of Theology | |
| THSU Texas Health and Science University | |
| ti Tigrinya language (ISO 639-1 code) | |
| Ti Tebi-Titanium | |
| TI Tajikistan (FIPS 10-4 country code)-Thermal Imaging-Threat Identification-Training Instructor-Texas Instruments | |
| TIA Total Information Awareness initiative | |
| TIA Transient Ischemic Attack | |
| TIALD Thermal Imaging and Airborne Laser Designation | |
| TIBS Tactical Information Broadcast System | |
| TIC Troops In Contact | |
| TID Target Identification-ter in die (Latin, "three times daily") | |
| TIGERS Topologically Integrated Geographic Encoding and Referencing System | |
| TIM Technical Information Memorandum-Technical Interchange Meeting-Toxic Industrial Material-Telecom Italia Mobile | |
| TIMS Tactical Internet Management System-The Institute of Management Sciences-The International Molinological Society-Thermal Infrared Multispectral Scanner-Thermal Ionization Mass Spectrometry-Travel Information Management Services-Tuberculosis Information Management System | |
| TINC There Is No Cabal | |
| TINY That Is, Not You (internet slang) | |
| TIP Thermal Identification Panel | |
| tir Tigrinya language (ISO 639-2 code) | |
| tits Toes in the Sand | |
| TJ Tajikistan (ISO 3166 digram)-Terajoule | |
| TJD Truncated Julian Day | |
| TJK Tajikistan (ISO 3166 trigram) | |
| TJS Tajik somoni (ISO 4217 currency code) | |
| tk Turkmen language (ISO 639-1 code) | |
| TK Terakelvin-Tokelau (ISO 3166 digram) | |
| TKBL Türkiye 1. Kadınlar Basketbol Ligi, the Turkish-language name of the Turkish Women's Basketball League | |
| TKL Tokelau (ISO 3166 trigram) | |
| TKM Turkmenistan (ISO 3166 trigram) | |
| tl Tagalog language (ISO 639-1 code) | |
| Tl Thallium | |
| TLPM T1 Line Performance Monitor | |
| TL Team Leader, Teralitre,Timor-Leste (ISO 3166 digram), ThermoLuminescence,TL;DR-Too long; didn't read | |
| TLATOJL The Life and Times of Juniper Lee | |
| TLA Three-Letter Abbreviation/Acronym,(ii) 'Three-Letter Agency' (i.e. CIA, FBI, NSA, etc.), Temporal light artefacts | |
| TLAM Tomahawk Land Attack Missile | |
| TLAR That Looks About Right (chat shorthand),Transporter-Launcher And Radar | |
| TLC Tender Loving Care,The Learning Channel (now known strictly by the initials),Thin-layer chromatography,T-Boz, Lefteye, Chilli,Tables, Ladders, and Chairs (type of professional wrestling match) | |
| TLD Thermoluminescent Dosimeter,Top-Level Domain | |
| TLE Temporal light effects | |
| TLI Temporal light interference | |
| TLM Traditional Latin Mass,Tridentine Latin Mass,Transaction Lifecycle Management, Temporal light modulation | |
| TLS Timor-Leste (ISO 3166 trigram), Times Literary Supplement,TM[edit] | |
| Tm Terameter | |
| Thulium | |
| TM Technical Manual,Theater Missile,Thematic Mapper, trademark (often written in small superscript type: TM or ™), Turing machine, Turkmenistan (ISO 3166 digram) Tympanic Membrane | |
| TMA Terminal Maneuvering Area (restricted flying zone),Texas Medical Association,Tristeza y muerte de agave (Spanish, "wilting and death of agave")-a disease affecting the blue agave, from which the popular spirit tequila is produced | |
| TMAP (a/i) Texas Medication Algorithm Project | |
| TMC The Movie Channel | |
| TMD Theater Missile Defense | |
| TMDK The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan) | |
| TMI Too Much Information | |
| TMJ TemporoMandibular Joint (syndrome) | |
| TMM Turkmen manat (ISO 4217 currency code) | |
| TMNT Teenage Mutant Ninja Turtles | |
| TMO Table Mountain Observatory,Television match official (rugby union) | |
| TMP East Timor (ISO 3166 trigram; obsolete 2002), Temporary | |
| TMPG Transparent Multiplatform Gateway | |
| TMR Twin Main Rotors (helicopter type) | |
| TMS Transcranial Magnetic Stimulation | |
| TMT Thirty Meter Telescope | |
| TMTOWTDI There's Than One Way To Do It (from Perl) | |
| TMZ Thirty-Mile Zone, an area in and around Los Angeles considered "local" under entertainment industry union work rules | |
| tn Tswana language (ISO 639-1 code) | |
| TN Tennessee (postal symbol),Teranewton,Tonga (FIPS 10-4 country code),Tunisia (ISO 3166 digram) | |
| TNA Total Nonstop Action Wrestling, a former name of the professional wrestling promotion now known as Impact Wrestling | |
| TND Tunisian dinar (ISO 4217 currency code) | |
| TNO Trans-Neptunian Object | |
| TNT Thomas Nationwide Transport, an Australian company that was one of the predecessors to the former TNT N.V. and the current TNT Express, TriNitroToluene,(a/i) Turner Network Television,TO[edit] | |
| to Tongan language (ISO 639-1 code) | |
| TO Togo (FIPS 10-4 country code),Tonga (ISO 3166 digram) | |
| TOA Table Of Authorities,Total Obligation Authority (accounting) | |
| TOAD Temporary, Obsolete, Abandoned, or Derelict site (urbanism),Towed Optical Assessment Device | |
| TOBS Time of OBServation | |
| TOC (a/i) Table Of Contents,Tactical Operations Centre, Temporo-Occipital transition Cortex,Top of Concrete,To-do-To-do-List | |
| TOG Togo (IOC and FIFA trigram, but not ISO 3166) | |
| TOGS Thermal Observation Gunnery Sight | |
| TOMS Total Ozone Mapping Spectrometer (satellite instrument) | |
| ton Tongan language (ISO 639-2 code) | |
| TON Tonga (ISO 3166 trigram) | |
| TOP Tongan pa'anga (ISO 4217 currency code) | |
| TOS Tape Operating System,Terms of service,The Original Series, used to distinguish the first Star Trek TV series from other parts of the media franchise,Tramiel Operating System | |
| TOT Time On Target | |
| TOW Tube-launched, Optically tracked, Wire-guided (anti-tank missile) | |
| TP East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code), Training Practice,Trident Ploughshares | |
| TPE Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan) | |
| TPI The point is | |
| TPO Thrombopoietin | |
| TPS The Pennington School | |
| TPTB The Powers That Be (often used to refer to the people responsible for the content of TV series or movies) | |
| TQ Top Qualifier (similar to Pole Position in car racing) | |
| tr Turkish language (ISO 639-1 code) | |
| TR Turkey (ISO 3166 digram) | |
| TRA Technology iness Assessment | |
| TRAC (U.S. Army) TRADOC Analysis Center | |
| TRACON Terminal Radar Approach Control | |
| TRADOC (U.S. Army) Training and Doctrine Command | |
| TRAIN Tourist Railway Association, Inc. | |
| TRANSCOM U.S. Transportation Command | |
| TRAP Tactical Receive equipment and related Applications | |
| TRASANA TRADOC Systems Analysis Agency | |
| TRD Towed Radar Decoy | |
| TRIGAT Third Generation Antitank (missile) | |
| TRL Technology readiness level | |
| Trp Troop | |
| TRP Target Reference Point-Time of Reporting | |
| TRU Transuranic | |
| TRUEX Training in Urban Environment Exercise | |
| TRW Thompson Ramo Wooldridge Inc. | |
| TRY Turkish lira (ISO 4217 currency code) | |
| ts Tsonga language (ISO 639-1 code) | |
| Ts Terasecond | |
| TS Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code), TinySex,Transsexual, "Tough Sh*t" | |
| TSA Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army | |
| TSCA Toxic Substances Control Act ("tosca") | |
| TSEC Transmission Security Encryption Code | |
| TSL Transportation Security Laboratory | |
| tsn Tswana language (ISO 639-2 code) | |
| TSN The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network | |
| tso Tsonga language (ISO 639-2 code) | |
| TSO The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office, Trans-Siberian Orchestra (band) | |
| TSOP Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental) | |
| TSR many, including Terminate and Stay Resident; see entry | |
| TSSIA The Subject Says It All | |
| tt Tatar language (ISO 639-1 code) | |
| TT Teratesla, Terrestrial Time,Tourist Trophy (Motorcycle sport), Trinidad and Tobago (ISO 3166 digram) | |
| TTBAO Things To Be Aware Of | |
| TTCT Torrance Tests of Creative Thinking | |
| TTD Trinidad and Tobago dollar (ISO 4217 currency code) | |
| TTO Trinidad and Tobago (ISO 3166 trigram) | |
| TTFN Ta Ta For Now | |
| TTL Tax, Title, License, Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic | |
| TTP Tactics, Techniques, and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point | |
| TTTEAF Thomas the Tank Engine and Friends | |
| TTY TeleTYpewriter (Printer) | |
| TTYL To You Later (Internet slang) | |
| TTZ Tetrazolium | |
| TU Technische Universität (German for "Technical University")-Thammasat University (Thailand)-Turkey (FIPS 10-4 country code) | |
| TUC Trades Union Congress | |
| TUG TeX Users Group | |
| TUI (a/i) Text-based user interface (cf. CLI), among other uses | |
| tuk Turkmen language (ISO 639-2 code) | |
| TUN Tunisia (ISO 3166 trigram) | |
| TUNS Technical University of Nova Scotia | |
| Tur Turkish language (ISO 639-2 code) | |
| TUR Turkey (ISO 3166 trigram) | |
| TUSK Tank Urban Survival Kit | |
| TUV Tuvalu (ISO 3166 trigram) | |
| Tv Time value, a designation seen on some camera dials for shutter priority mode | |
| TV Television, Teravolt, Transvestite, Tuvalu (ISO 3166 and FIPS 10-4 country code digram) | |
| TVA Tennessee Valley Authority | |
| TVG (p/i) Television Games (Network), Tick, Very Good, Often used by School Teachers when marking homework etc. (Tick VG)[1][2] | |
| TVR TreVor (Wilkinson) Racing | |
| TVS Tornado vortex signature | |
| TWA Trans World Airlines | |
| tw Twi language (ISO 639-1 code) | |
| TW Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram)- | |
| TWAIN Technology Without An Interesting Name | |
| TWD Taiwan dollar (ISO 4217 currency code) | |
| TWE Trans World Entertainment | |
| twi Twi language (ISO 639-2 code) | |
| TWI The Welding Institute | |
| TWN Republic of China (Taiwan) (ISO 3166 trigram) | |
| TWP Technical Working Paper | |
| Twp township | |
| TWS Thermal Weapon Sight-Track While Scan | |
| TWT traveling wave tube | |
| TWX telex | |
| TWIP Take What Insurance Pays-When a surgeon agrees to accept a lower payment than he ordinarily would for a procedure and not charge the patient the difference | |
| TX Texas (postal symbol)-Transmit-Turkmenistan (FIPS 10-4 country code) | |
| TXV Thermostatic Expansion Valve | |
| ty Tahitian language (ISO 639-1 code) | |
| TYT Take Your Time-Internet chat abbreviation | |
| TZ Tanzania (ISO 3166 and FIPS 10-4 country code digram) | |
| TZA Tanzania (ISO 3166 trigram) | |
| TZC Tetrazolium chloride | |
| TZS Tanzanian shilling (ISO 4217 currency code) | |
| U Uranium | |
| UA Ukraine (ISO 3166 digram) Unit of Action | |
| UAAP University Athletic Association of the Philippines | |
| UAB University of Alabama at Birmingham | |
| UAE (i/s) United Arab Emirates (also IOC and FIFA trigram, but not ISO 3166) | |
| UAH Ukrainian hryvnia (ISO 4217 currency code), University of Alabama in Huntsville | |
| UAR Uniformly At Random (probability),Unión Argentina de Rugby (Spanish for "Argentine Rugby Union"),United Arab Republic | |
| UAV Unmanned Aerial Vehicle | |
| UBC * United Baptist Church,* University of British Columbia | |
| UBIGEO Ubicación Geografica (Spanish for Geographical Location) | |
| UBA Unbundled Bitstream Access | |
| UBS Union Bank of Switzerland | |
| UCBSA United Cricket Board of South Africa | |
| UCAV (a/i) Unmanned Combat Air Vehicle | |
| UCF University of Central Florida | |
| UCI Union Cycliste Internationale (French, "International Cycling Union")-University of California, Irvine | |
| UCLA University of California, Los Angeles | |
| UCLES University of Cambridge Local Examinations Syndicate | |
| UCR University of Costa Rica-University of California, Riverside | |
| UCS Union of Concerned Scientists | |
| UCSB University of California, Santa Barbara | |
| UCSD University of California, San Diego | |
| UDAS Uppsala-DLR Asteroid Survey | |
| UDDI Universal Description, Discovery and Integration | |
| UDP User Datagram Protocol | |
| UDT Underwater Demolition Team | |
| UDTS Uppsala-DLR Trojan Survey | |
| UE Unit of Employment | |
| UEFA Union of European Football Associations | |
| UEFI (i/a) Unified Extensible Firmware Interface | |
| UESAC Uppsala-ESO Survey of Asteroids and Comets | |
| UFC Ultimate Fighting Championship | |
| UFO Unidentified flying object,United Farmers of Ontario,UG[edit] | |
| ug Uyghur language (ISO 639-1 code) | |
| UG Uganda (ISO 3166 and FIPS 10-4 country code digram) | |
| UGA Uganda (ISO 3166 trigram) | |
| UGV Unmanned Ground Vehicle | |
| UGX Ugandan shilling (ISO 4217 currency code) | |
| UHF Ultra High Frequency | |
| UHMW Ultra-high-molecular-weight polyethylene | |
| UHRB Ultra-High Resolution Building (simulation) | |
| UHNWIs Ultra High Net Worth Individuals Investopedia and Wikipedia | |
| UIC University of Illinois at Chicago | |
| UID User ID | |
| uig Uyghur language (ISO 639-2 code) | |
| UIL University Interscholastic League (governing body for most interscholastic activities, notably sports, in Texas public high schools) | |
| UIUC University of Illinois at Urbana-Champaign | |
| UJTL Universal Joint Task List | |
| UJT Unijunction transistor | |
| uk Ukrainian language (ISO 639-1 code) | |
| UK United Kingdom (also FIPS 10-4 country code),University of Kentucky | |
| UKDA United Kingdom Data Archive [1] | |
| UKIP UK Independence Party | |
| ukr Ukrainian language (ISO 639-2 code) | |
| UKR Ukraine (ISO 3166 trigram) | |
| UL Underwriters Laboratories | |
| ULEB Union des ligues européens de basket-ball, French for "Union of European Basketball Leagues" | |
| ULF Ultra Low Frequency | |
| ULOF unprotected loss of flow (nuclear accident) | |
| ULOHS unprotected loss of heat sink (nuclear accident) | |
| UTOP unprotected transient overpower (nuclear accident) | |
| UM United States Minor Outlying Islands (postal symbol; ISO 3166 digram) | |
| UMBC University of Maryland, Baltimore County | |
| UMC United Microelectronics Corporation-University of Missouri-Columbia | |
| UMCP Unit Maintenance Collection Point | |
| UMES University of Maryland Eastern Shore | |
| UMI United States Minor Outlying Islands | |
| UMIST University of Manchester Institute of Science and Technology | |
| UMK Uniwersytet Mikołaja Kopernika (Polish "Nicolaus Copernicus University") | |
| UML | |
| UMTS Universal Mobile Telecommunications System | |
| UN United Nations | |
| UNABOM University and airline bomber (FBI case name) | |
| UNAIDS (i/a) Joint United Nations Programme on HIV/AIDS | |
| UNaM (p/a) Universidad Nacional de Misiones (Spanish, "National University of Misiones") | |
| UNAM Universidad Nacional Autónoma de México (Spanish, "National Autonomous University of Mexico") | |
| UNAMSIL United Nations Mission in Sierra Leone | |
| UNCF United Negro College Fund | |
| UNCLOS United Nations Convention on the Law of the Sea | |
| UNCSGN United Nations Conference on the Standardization of Geographical Names | |
| UNCTAD United Nations Conference on Trade and Development | |
| UNDCP United Nations Drug Control Programme | |
| UNDE (i/a) Union of National Defence Employees (Canada) | |
| UNDP United Nations Development Programme | |
| UNEP United Nations Environment Programme | |
| UNESCO United Nations Educational, Scientific and Cultural Organization | |
| UNFCCC United Nations Framework Convention on Climate Change | |
| UNFICYP United Nations Peacekeeping Force in Cyprus | |
| UNGEGN United Nations Group of Experts on Geographical Names | |
| UNHCR United Nations High Commissioner for Refugees | |
| UNICEF United Nations Children's Fund (originally the United Nations International Children's Emergency Fund) | |
| UNICRI United Nations Interregional Crime and Justice Research Institute | |
| UNIDO United Nations Industrial Development Organization | |
| UNIFEM United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme) | |
| UNIS University of Surrey | |
| UNLV University of Nevada, Las Vegas | |
| UNMIK United Nations Interim Administration Mission in Kosovo | |
| UNMOVIC United Nations Monitoring, Verification and Inspection Commission | |
| UNOSOM United Nations Operations in Somalia | |
| UNPROFOR United Nations Protection Force (in former Yugoslavia) | |
| UNRISD United Nations Research Institute for Social Development | |
| UNSM Union of Nova Scotia Municipalities | |
| UNTAC United Nations Transitional Authority in Cambodia | |
| UNTAET (i/a) United Nations Transitional Administration in East Timor | |
| UNU United Nations University | |
| UP Ukraine (FIPS 10-4 country code),Union Pacific Railroad (AAR reporting mark), Upper Peninsula (of Michigan),Uttar Pradesh | |
| UPC United Pentecostal Church, Universal Product Code | |
| UPDA Uganda People's Democratic Army | |
| UPdM Università Popolare della Multimedialità | |
| UPDM Unified Profile for DoDAF/MODAF | |
| UPF Universitat Pompeu Fabra (Catalan, "Pompeu Fabra University") | |
| UPI United Press International | |
| UPN United Paramount Network | |
| UPS Uninterruptible Power Supply,United Parcel Service | |
| UPT Universal Personal Telecommunications | |
| UPTN Upper Peninsula Telehealth Network | |
| UPU Universal Postal Union | |
| ur Urdu language (ISO 639-1 code) | |
| UR Soviet Union (NATO country code, obsolete 1992) | |
| URBSFA Union royale belge des sociétés de football association (French for Royal Belgian Football Association) | |
| urd Urdu language (ISO 639-2 code) | |
| URD User requirements document | |
| URI Uniform Resource Identifier,University of Rhode Island | |
| URL (a/i) Uniform Resource Locator ("earl") | |
| URU Uruguay (IOC and FIFA trigram, but not ISO 3166) | |
| URY Uruguay (ISO 3166 trigram) | |
| US United States (also ISO 3166 and FIPS 10-4 country code digram) | |
| USAF United States Air Force | |
| USAFSPC U.S. Air Force Space Command | |
| USAACE United States Army Aviation Center of Excellence, Fort Rucker, Alabama | |
| USAADAC United States Army Air Defense Artillery School, Fort Sill, Oklahoma | |
| USAAS United States Army Armor School, Ft. Benning, Georgia | |
| USAIC U.S. Army Infantry Center,U.S. Army Intelligence Center | |
| USAID (a/i) United States Agency for International Development | |
| USAP Union Sportive des Arlequins Perpignanais, United States Antarctic Program | |
| USAPATRIOT Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism | |
| USAREUR United States Army Europe | |
| USB Universal Serial Bus | |
| USC United States Code,University of South Carolina,University of Southern California | |
| USCG United States Coast Guard | |
| USCINCSPACE United States Commander in Chief, Space Command | |
| USD United States dollar (ISO 4217 currency code),USD(A&S),-Under Secretary of Defense for Acquisition and Sustainment,ASD(R&E) Under Secretary of Defense for Research and Engineering,USD(C)-(U.S.) Under Secretary of Defense (Comptroller) | |
| USDA United States Department of Agriculture | |
| USDI United States Department of the Interior | |
| USDOE United States Department of Energy | |
| USDPR (U.S.) Under Secretary of Defense for Personnel and iness | |
| USDP (U.S.) Under Secretary of Defense for Policy | |
| USDRE (U.S.) Under Secretary of Defense for Research and Engineering | |
| USEC United States Enrichment Corporation | |
| USFL United States Football League | |
| USFWS United States Fish and Wildlife Service | |
| USGS United States Geological Survey | |
| USIA United States Information Agency | |
| USJFCOM United States Joint Forces Command | |
| USL United Soccer League, a third-level U.S. league, not to be confused with an earlier league of the same name.,United Soccer Leagues, the organization that operates the above league, plus several other lower-level leagues,University of Southwestern Louisiana, a former name for the school now known as the University of Louisiana at Lafayette | |
| USMC United States Marine Corps | |
| USMNT United States men's national (soccer) team | |
| USN United States Navy | |
| USNA United States National Arboretum-United States Naval Academy | |
| USNB United States Naval Base | |
| USNG United States National Grid | |
| USNH United States Naval Hospital | |
| USNI United States Naval Institute | |
| USNO U.S. Naval Observatory | |
| USNOFS United States Naval Observatory Flagstaff Station | |
| USNP United States Newspaper Program | |
| USNR United States Navy Reserve | |
| USNS United States Naval Ship | |
| USNY University of the State of New York (usually pronounced "use-knee") | |
| USNZ University Sport New Zealand | |
| USPS United States Postal Service | |
| USPTO United States Patent and Trademark Office | |
| USR Universal System Resources (/usr, directory in a *NIX filesystem), User | |
| USS United States ship (sometimes meaningless, see Star Trek) | |
| USSPACECOM United States Space Command | |
| USSR Union of Soviet Socialist Republics | |
| UST Underground Storage Tank | |
| USTRANSCOM United States Transportation Command | |
| USWNT United States women's national (soccer) team | |
| UT Universal Time | |
| UTEP (a/i) University of Texas at El Paso (pronounced you-tep) | |
| UTM Universal Transverse Mercator (geographical co-ordinate system) | |
| UU Unitarian Universalism-University of Utah-Unseen University | |
| UUA Unitarian Universalist Association | |
| UUID Universally Unique Identifier (see also GUID) | |
| UUV Unmanned Underwater Vehicle | |
| UV Burkina Faso (FIPS 10-4 country code; from Upper Volta)-ultraviolet | |
| UVM Universal Verification Methodology, Universidad del Valle de México, University of Vermont, from its Latin name of Universitas Viridis Montis ("University of the Green Mountains"), UV mapping,UW[edit] | |
| UW University of Washington | |
| UWO University of Western Ontario | |
| UWW United World Wrestling | |
| UXO Unexploded ordnance | |
| UY Uruguay (ISO 3166 and FIPS 10-4 country code digram) | |
| UYU Uruguayan peso uruguayo (ISO 4217 currency code) | |
| uz Uzbek language (ISO 639-1 code) | |
| UZ Uzbekistan (ISO 3166 and FIPS 10-4 country code digram) | |
| uzb Uzbek language (ISO 639-2 code) | |
| UZB Uzbekistan (ISO 3166 trigram) | |
| UZS Uzbek som (ISO 4217 currency code) | |
| V 5 (in Roman numerals)-Vanadium-Volt | |
| VA Vatican City-State (ISO 3166 digram)-Veterans Affairs (U.S. Department of)-Virginia (postal symbol)- | |
| VACIS Vehicle And Container Inspection System | |
| VACIS Victorian Ambulance Clinical Information System | |
| VANOS Variable Nockenwelle System | |
| VAO Vienna Art Orchestra | |
| VASIS Visual Approach Slope Indicator System (aviation) | |
| VAT Value-Added Tax-Vatican City-State (ISO 3166 trigram) | |
| VB Victoria Bitter (beer)-Visual Basic | |
| VBA Visual Basic for Applications | |
| VC Saint Vincent and the Grenadines (FIPS 10-4 country code; ISO 3166 digram)-Victoria Cross | |
| VCDS (Canada) Vice-Chief of the Defence Staff-VAG-COM Diagnostic System | |
| vCJD Variant Creutzfeldt-Jakob disease | |
| VCJCS Vice Chairman, Joint Chiefs of Staff | |
| VCNO (U.S.) Vice Chief of Naval Operations | |
| VCR Video cassette recorder | |
| VCofS Vice Chief of Staff | |
| VCT Saint Vincent and the Grenadines (ISO 3166 trigram) | |
| VD North Vietnam (ISO 3166 digram, obsolete 1977)-Venereal Disease | |
| VDFS VisualSVN Distributed File System (VDFS) | |
| VDMOS (i/a) Vertical Double-diffused MOS transistor ("vee-dee-moss") | |
| VDOT (i/a) Virginia Department of Transportation ("vee-dot") | |
| VDR North Vietnam (ISO 3166 trigram, obsolete 1977) | |
| ve Venda language (ISO 639-1 code) | |
| VE Venezuela (FIPS 10-4 country code; ISO 3166 digram) | |
| VEB Venezuelan bolívar (ISO 4217 currency code) | |
| VEEGA Venus Earth Earth Gravity Assist manœuvre | |
| ven Venda language (ISO 639-2 code) | |
| VEN Venezuela (ISO 3166 trigram) | |
| VERDI Vittorio Emanuele Re D'Italia (Victor Emmanuel, King of Italy) | |
| VERITAS Very Energetic Radiation Imaging Telescope Array System | |
| VFA Victorian Football Association (historic Australian rules football league), Volatile Fatty Acid | |
| VfD s for deletion (used in Wikipedia) | |
| VFL Victorian Football League, the name of two distinct Australian rules football leagues: | |
| VFM Value For Money | |
| VFMO Very Fast Moving Object (astronomy) | |
| VFR Visual Flight Rules | |
| VFT Virtual Function Table | |
| VFW Veterans of Foreign Wars | |
| VG British Virgin Islands (ISO 3166 digram) | |
| VGB British Virgin Islands (ISO 3166 trigram) | |
| VH1 (a/i) Video Hits One | |
| VHF Very High Frequency | |
| vi Vietnamese language (ISO 639-1 code) | |
| VI 6 (in Roman numerals)- | |
| VIA Versatile Interface Adapter | |
| VIC Victoria, Australia (postal symbol)-Video Interface Chip-Virginia Intermont College | |
| VIDS Visual Information Display System | |
| vie Vietnamese language (ISO 639-2 code) | |
| VII 7 (in Roman numerals) | |
| VIII 8 (in Roman numerals) | |
| VIN (i/a) Vehicle Identification Number (ISO 3779) | |
| VIP see entry | |
| VIR U.S. Virgin Islands (ISO 3166 trigram)-Virgin Atlantic Airways (ICAO code) | |
| VIS | |
| VISCII VIetnamese Standard Code for Information Interchange | |
| VIT Vellore Institute of Technology | |
| VIVO Video In Video Out | |
| VJ Video Jockey | |
| VK Australia (ham radio code)-Västerbottens-Kuriren, a Swedish daily newspaper | |
| VLA Very Large Array-(UK) Veterinary Laboratories Agency | |
| VLAD (a/i) Vertical Line Array DIFAR | |
| VLBA Very Long Baseline Array | |
| VLF Very Low Frequency | |
| VLIW Very Long Instruction Word | |
| VLPFC VentroLateral PreFrontal Cortex | |
| VLPMC VentroLateral PreMotor Cortex | |
| VLSF Very Loud, Stink-Free | |
| VLSI Very-large-scale integration | |
| VLVS Very Loud, Very Stinky | |
| VM Vietnam (FIPS 10-4 country code) | |
| VMASC (i/a) Virginia Modeling Analysis & Simulation Center ("vee-mask") | |
| VMF Variable Message Format | |
| VMF Marine Fighting Squadron of the United States Marine Corps | |
| VMN VentroMedial Nucleus (neurophysiology) | |
| VN Vietnam (ISO 3166 digram) | |
| VND Vietnamese đồng (ISO 4217 currency code) | |
| VNIR Visible and Near InfraRed | |
| VNM Vietnam (ISO 3166 trigram) | |
| VNS see entry | |
| VOA Voice of America | |
| vo Volapük language (ISO 639-1 code) | |
| VOC Vereenigde Oostindische Compagnie (Dutch East India Company)-Volatile organic compounds | |
| VOIP Voice Over Internet Protocol | |
| vol Volapük language (ISO 639-2 code) | |
| VOLT Visual OpenType Layout Tool | |
| Volvo Swedish supplier of commercial vehicles owned by Ford Motor Company. "Volvo" means "I roll" in Latin. | |
| VON Victorian Order of Nurses | |
| VOR VHF Omnidirectional Ranging | |
| VOR Voice of Russia | |
| VOX Voice-operated oscillator | |
| VP (a/i) Vice-President ("veep") | |
| VPN Virtual Private Network | |
| VQ Vector Quantization-U.S. Virgin Islands (FIPS 10-4 territory code) | |
| VR Virtual Reality | |
| VRSG | |
| VS Very Special (brandy grade)-vide supra (Latin, "see above") | |
| VSAT Very Small Aperture Terminal ("vee-satt") | |
| VSHORAD Very Short Range Air Defence | |
| VSO Voluntary Services Overseas | |
| VSOP | |
| VSR Very Special Relativity | |
| VT Vatican City-State (FIPS 10-4 country code),Vermont (postal symbol), Video tape,Virginia Tech | |
| VTC Video Tele-Conference | |
| VTEC Variable valve Timing and Electronic lift Control | |
| VTOL Vertical Take-Off & Landing | |
| VU Vanuatu (ISO 3166 digram)-Vedanta University | |
| VUB Vrije Universiteit Brussel (Belgian university) | |
| VUK | |
| VUT Vanuatu (ISO 3166 trigram) | |
| VUV Vanuatu vatu (ISO 4217 currency code) | |
| VV Via Voice-Village Voice | |
| VVAF Vietnam Veterans of America Foundation | |
| VW Volkswagen | |
| VZ Verizon Communications (NYSE code) | |
| vzw vereniging zonder winstoogmerk (Dutch "non-profit organisation") | |
| W3C World Wide Web Consortium | |
| wa Walloon language (ISO 639-1 code) | |
| WA Namibia (FIPS 10-4 country code; from West Africa),Washington state (postal symbol),Western Australia (postal symbol), World Archery (Federation) | |
| WAAC Women's Army Auxiliary Corps (Britain) (World War I UK) | |
| WAAF Women's Auxiliary Air Force (World War II UK) | |
| WAC Western Athletic Conference, Women's Auxiliary Corps (World War II Canada),Women's Army Corps (World War II U.S.) | |
| WACC Weighted Average Cost of Capital (accounting) | |
| WACS What-A-Cartoon! Show | |
| WAD Weapons Alert Designator | |
| WAGGGS World Association of Girl Guides and Girl Scouts | |
| WAGs Wives And Girlfriends (most notably of England national football team players at the 2006 FIFA World Cup, although the term existed earlier) | |
| WAK Wake Island (ISO 3166 trigram, obsolete 1986) | |
| WAL see entry | |
| WAN Wide area network | |
| WAP Wireless Application Protocol | |
| WAPIMA What a pain in my ass | |
| WAR With All Respect | |
| WAsP Short form of WAAAAP (Wind Atlas Analysis and Application Program) | |
| WASP White Anglo-Saxon Protestant,Wide Angle Search for Planets,Women Airforce Service Pilots | |
| WAYP | |
| Wb Weber | |
| WB Warner Bros.-Welcome Back (Internet shorthand) | |
| WBA Warner Bros. Animation,West Bromwich Albion (F.C.),World Boxing Association | |
| WBC World Boxing Council | |
| WBE Work Breakdown Element | |
| WBO World Boxing Organization | |
| WbW with best wishes,white boy wasted,WC[edit] | |
| WC Water Closet-Winston Churchill-World Cup (sports) | |
| WCBO World Chess Boxing Organisation | |
| WCBP World Center for Birds of Prey | |
| WCL World Confederation of Labour | |
| WCS Weapon Control Status-Wildlife Conservation Society | |
| WCW World Championship Wrestling | |
| WDC Western Design Center-World Data Center | |
| WDWR Walt Disney World Resort | |
| WDIN Wildlife Disease Information Node | |
| WEBS Weapon Effectiveness Battle Simulation | |
| WEC World Extreme Cagefighting | |
| WEEE Waste Electrical and Electronic Equipment | |
| WEF World Economic Forum | |
| WEIRD Western, educated, industrialized, rich, democratic (cultural identifier of a disproportionate number of psychology test subjects) | |
| WEM West Edmonton Mall | |
| WEU Western European Union | |
| WEZ (a/i) Weapon Engagement Zone | |
| WF Wallis and Futuna Islands (ISO 3166 digram) | |
| WFC Women's Forage Corps (World War II UK) | |
| WFD Weapon of Focused Destruction | |
| WFF Wallops Flight Facility | |
| WFP World Food Program | |
| WFZ Weapons Free Zone | |
| WFI Water for Injection | |
| WG Working Group-Wade-Giles | |
| WH Wehrmacht Heer (German World War II army vehicle licence plate code) | |
| WHAM Wisconsin Hydrogen-Alpha Mapping (telescope) | |
| WHI Women's Health Initiative | |
| WHIP Walks plus hits per inning pitched | |
| WHO World Health Organization | |
| WHS (U.S.) Washington Headquarters Services | |
| WI Western Sahara (FIPS 10-4 country code)-Wisconsin (postal symbol)-Women's Institute | |
| WIA Wounded In Action-Wireless Institute of Australia (Amateur Radio) | |
| WIIFM What's in it for me? | |
| WIMP Weakly Interacting Massive Particle-Windows, Icons, Menus, Pointers | |
| WIPO (a/i) World Intellectual Property Organization | |
| WIPP [Nuclear] Waste Isolation Pilot Plant | |
| WIYN Wisconsin Indiana Yale NOAO telescope consortium | |
| WK Wake Island (ISO 3166 digram, obsolete 1986) | |
| WKYP Will Keep You Posted | |
| WKX World Kickboxing Xtrm | |
| WL Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code) | |
| WLB Women's Land Brigade (World War II Canada) | |
| WLF Wallis and Futuna Islands (ISO 3166 trigram) | |
| wln Walloon language (ISO 639-2 code) | |
| WLOG Without Loss Of Generality (see WOLOG) | |
| WM Wehrmacht Marine (German World War II navy vehicle licence plate code) | |
| WMANUS West Midlands Area National Union of Students | |
| WMD Weapon[s] of Mass Destruction-World Movement for Democracy † | |
| WMI Wildlife Management Institute | |
| WMO World Meteorological Organization | |
| WNA World Nuclear Association | |
| WNF "Will Not Fix" | |
| WNL Medical initialism for "Within Normal Limits" | |
| WNIT Women's National Invitation Tournament | |
| WNSD What's New, Scooby-Doo? | |
| WNW West North-West | |
| wo Wolof language (ISO 639-1 code) | |
| WO Warrant Officer | |
| WOF Width of Fabric | |
| WOFT Waste Of Fucking Time | |
| WOFTAM Waste Of Fucking Time And Money | |
| WOI (a/i) Wheels Of Italy | |
| wol Wolof language (ISO 639-2 code) | |
| WOM Write Only Memory | |
| WOS Wilson Ornithological Society | |
| WOSM World Organization of the Scout Movement,Worldwide Oil Spill Model | |
| WOT Waste Of Time | |
| WP White Phosphorus (ammunition) | |
| WPB War Production Board during World War II | |
| WPE World Pork Expo | |
| WPK Wider Peacekeeping | |
| WPT World Poker Tour-World Premiere Toons | |
| WPP Witness Protection Program | |
| WR Wide Receiver (football) | |
| WRAC Women's Royal Army Corps (World War II UK) | |
| WRAIR Walter Reed Army Institute of Research | |
| WRBWWRM "We Best What We Most" | |
| WRC World Rally Championship | |
| WRC World Religions Conference | |
| WRNS Women's Royal Naval Service (World War II UK) (pronounced "wrens") | |
| WRVS Women's Royal Voluntary Service, now only known by the acronym (UK) | |
| WRS Worldwide Reference System | |
| WRT Writer Response Theory, WRT-"With respect to", especially in fields such as Mathematics., World Rally Team, Wallace Roberts & Todd, LLC (Urban Planning and Design), Wireless Ronin Technologies (digital signage), NHS Workforce Review Team,The Linksys routers whose model name start with 'WRT', Wholesale, Trade, Retail sector, category in employment and economics statistics, Wireless Receiver/Transmitter ( computer networks/IT ),Third party firmware for the Linksys WRT routers and compatible models from other vendors., Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.,WS[edit] | |
| WS Samoa (ISO 3166 and FIPS 10-4 country code digram; from the country's former name of Western Samoa), Writer to the Signet (a Scottish solicitor) | |
| WSC Weapon System Catalogue | |
| WSDL Web Services Description Language | |
| WSJ (The) Wall Street Journal | |
| WSL White Star Line (shipping company),Women's Super League, used to describe England's current top women's association football league and former top women's rugby union competition,Workers' Socialist League (UK political party) | |
| WSM Samoa (ISO 3166 trigram; from Western Samoa), Winchester Short Magnum (family of rifle cartridges) | |
| WSMR (a/i) White Sands Missile Range ("whiz-murr") | |
| WSROC Western Sydney Regional Organisation of Councils | |
| WSSM Winchester Super Short Magnum (family of rifle cartridges) | |
| WST Water Soluble Tetrazolium (assay), Samoan tālā (ISO 4217 currency code) | |
| WSTC Women Signallers Territorial Corps (World War II UK) | |
| WSW West South-West | |
| WTB Wales Tourism Board-Warenterminbörse Hannover | |
| WTB Want to Buy (a commonly used phrase in the online game "World of Warcraft") | |
| WTC World Trade Center | |
| WTF What the fuck?; also What a Terrible Failure (android) | |
| WTFH What The Fucking Hell | |
| WTH What the Hell | |
| WTNWD Wait To Next Working Day (a commonly used phrase to maintain work life balance) | |
| WTO World Trade Organization | |
| WTS Want to Sell (a commonly used phrase in the online game "World of Warcraft") | |
| WU Wabash University-Washington University in St. Louis-Western Union-Windows Update-Work unit-WU Wien (German Wirtschaftsuniversität Wien, Vienna University of Economics and Business Administration) | |
| WUU2 What you up to-Internet slang popular with teenagers. | |
| WUBU2 | |
| WV West Virginia (postal symbol) | |
| WVA World Veterinary Association | |
| WVIAC West Virginia Intercollegiate Athletic Conference | |
| WVR Women's Volunteer Reserve (World War II UK) | |
| WVSC Women's Volunteer Service Corps (World War II Canada) | |
| WVU West Virginia University | |
| WVUIT West Virginia University Institute of Technology (note, however, that the initialism is almost never used; the popular name of the school is "WVU Tech") | |
| WW see entry | |
| WWE World Wrestling Entertainment | |
| WWF World Wide Fund for Nature, from its original name of World Wildlife Fund, which remains the legal name in the U.S. and Canada,World Wrestling Federation | |
| WWI World War I | |
| WWII World War II | |
| WWIII World War III | |
| WWJD "What would Jesus do?" | |
| WWS Wheaton Warrenville South High School | |
| WWV Wagner-Werk-Verzeichnis (catalog of the works of Richard Wagner, and callsign of NIST's shortwave radio station in Fort Collins, Colorado) | |
| WWW World Wide Web | |
| WWWF World Wide Wrestling Federation | |
| WXO Weather [Executive] Officer | |
| WY Wyoming (postal symbol) | |
| WYSIWYG What You See Is What You Get (pronounced "wizzy-wig". See entry for derived acronyms) | |
| WYSIWYP What You See Is What You Print / What You See Is What You Pay ("wizzy-whip") | |
| WZ Swaziland (FIPS 10-4 country code) | |
| XAF BEAC (Banque des états de l'Afrique centrale) Central Africa CFA (Coopération financière en Afrique centrale) franc (ISO 4217 currency code) | |
| XAG Silver Troy ounce (ISO 4217 currency code) | |
| XAU Gold Troy ounce (ISO 4217 currency code) | |
| XBA European Composite Unit (EURCO; Bonds market unit) (ISO 4217 currency code) | |
| XBB European Monetary Unit (E.M.U.; Bonds market unit) (ISO 4217 currency code) | |
| XBML eXtended Business Modelling Language | |
| XC Ninety (in Roman numerals) | |
| XCBL XML Common Business Library | |
| XCD East Caribbean dollar (ISO 4217 currency code) | |
| XD Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD. | |
| Xe Xenon | |
| XF Automobile made by Jaguar-Truck made by DAF Trucks-IATA code for Vladivostok Air | |
| XFA XML Forms Architecture | |
| XFC Xtreme Fighting Championships | |
| XFD Fighter aircraft made by Douglas | |
| Xfe X File Explorer | |
| XFF X-Forwarded-For | |
| XFG Exfoliation glaucoma | |
| XFH 1932 prototype U.S. Navy fighter aircraft made by Hall-X-ray fluorescence holography | |
| XFN XHTML Friends Network-IATA code for Xiangyang Liuji Airport | |
| XFR Automobile made by Jaguar | |
| XFT X FreeType interface library | |
| XFW IATA code for Hamburg Finkenwerder Airport | |
| XG Automobile made by Hyundai | |
| XGA Extended Graphics Array | |
| XGE Xoreax Grid Engine-Signal for "I Surrender" | |
| XGG IATA code for Gorom Gorom Airport | |
| XGN IATA code for Xangongo Airport | |
| XGP Extreme Game Player | |
| XGR IATA code for Kangiqsualujjuag (Georges River) Airport | |
| xh Xhosa language (ISO 639-1 code) | |
| xho Xhosa language (ISO 639-2 code) | |
| XHTML eXtensible Hypertext Markup Language | |
| XHR eXtra high Image resolution-XMLHTTPRequest | |
| XI Eleven (in Roman numerals) | |
| XII Twelve (in Roman numerals) | |
| XIII Thirteen (in Roman numerals) | |
| XIV Fourteen (in Roman numerals) | |
| XIX Nineteen (in Roman numerals) | |
| XJ Automobile made by Jaguar-Automobile made by Jeep | |
| XJL Amphibian aircraft made by Columbia-Automobile made by Jaguar | |
| XJS Automobile made by Jaguar | |
| XK Automobile made by Jaguar-Automobile made by Jeep-Kell blood group precursor | |
| XKA IATA code for Kantchari Airport | |
| XKB X keyboard extension | |
| XKE Automobile made by Jaguar | |
| XKH IATA code for Xieng Khouang Airport | |
| XKR Automobile made by Jaguar | |
| XKS IATA code for Kasabonika Airport | |
| XKY IATA code for Kaya Airport | |
| XL eXtra Large-Forty (in Roman numerals) | |
| XML eXtensible Markup Language | |
| XMSF eXtensible Modelling and Simulation Framework | |
| XN Christian-Nordic Patent Institute | |
| XNA IATA code for Northwest Arkansas Regional Airport-X-No-Archive-Xeno Nucleic Acid | |
| XNC X Northern Captain | |
| XNN IATA code for Xining Caojiabao Airport | |
| XNS Xerox Network Systems-Extensible Name Service-Christians | |
| XNU X is Not Unix | |
| XO Χριστιανός Ορθόδοξος (Xristianos Orthodoksos, Greek for "Eastern Orthodoxy")-eXecutive Officer-eXtra Old (brandy grade) | |
| XOF BCÉAO (Banque centrale des états de l'Afrique de l'Ouest) West African CFA (Communauté financière d'Afrique) franc (ISO 4217 currency code) | |
| XP eXperience Point (role-playing games) | |
| XPD Palladium Troy ounce (ISO 4217 currency code) | |
| XPF CFP franc (ISO 4217 currency code) | |
| XPT Platinum Troy ounce (ISO 4217 currency code) | |
| XQJ XQuery API for Java™ | |
| XQP IATA code for Quepos La Managua Airport | |
| XQU IATA code for Qualicum Beach Airport | |
| XRML eXtensible Rights Markup Language | |
| XRP a cryptocurrency | |
| XS Xiaolin Showdown | |
| XSL eXtensible Style Language | |
| XTMH eXtreme Technology Multiprocessor Hyperlanguage | |
| XUL XML User Interface Language | |
| XV Fifteen (in Roman numerals) | |
| XVA an X-Value Adjustment (in finance) | |
| XVI Sixteen (in Roman numerals) | |
| XVII Seventeen (in Roman numerals) | |
| XVIII Eighteen (in Roman numerals) | |
| XWB (Airbus A350) "Extra Wide Body" | |
| XWF Xcitement Wrestling Federation | |
| XWM X window manager | |
| XWN eXtended WordNet | |
| XWS X Window System | |
| XX Twenty (in Roman numerals) | |
| XXX Hardcore pornography (film rating)-Thirty (in Roman numerals) | |
| XYA IATA code for Yandina Airport | |
| Xyl Xylobium | |
| XZA IATA code for Zabré Airport | |
| XZN Triple square screw driver | |
| y Yocto- | |
| Y Yotta-Yttrium | |
| Y2K Year Two Thousand | |
| yA Yoctoampere | |
| Ya Yottayear | |
| YA Yottaampere-Young Adult | |
| YAC (a/i) Youth-Adult Committee | |
| YAFLA Yet Another Five Letter Abbreviation | |
| YAP Young Aspiring Professional | |
| YaBPr Yet another Brother Pat rant | |
| YABSLAG Yet another boy singing like a girl | |
| Yb Ytterbium | |
| YB Youcef Benzouada (Southern Algerian name) | |
| yC Yoctocoulomb | |
| YC Yottacoulomb | |
| YD People's Democratic Republic of Yemen (ISO 3166 digram, obsolete 1990) | |
| YDS Yosemite Decimal System (climbing) | |
| YE Yemen (ISO 3166 digram) | |
| YEM Yemen (ISO 3166 trigram)-Manitowaning/Manitoulin East Municipal Airport IATA airport code | |
| YER Yemeni rial (ISO 4217 currency code) | |
| yF Yoctofarad | |
| YF Yottafarad | |
| yg Yoctogram | |
| Yg Yottagram | |
| YGM You've got mail | |
| Ygo Yu-Gi-Oh! | |
| YGCO Yamaneko Group of Comet Observers | |
| yH Yoctohenry | |
| YH Yottahenry | |
| YHS Ya Hoor sur! | |
| YHBT You Have Been Trolled | |
| YHIH1 You Heard It Here First (lowercase: yhih1, pronounced yi-hi) | |
| YHII You Have It Inside | |
| yi Yiddish language (ISO 639-1 code) | |
| Yi Yobi | |
| YI Serbia and Montenegro (deprecated FIPS 10-4 country code, now RB (Serbia) and MJ (Montenegro)) | |
| yid Yiddish language (ISO 639-2 code) | |
| Yippie Youth International Party + suffix | |
| yJ Yoctojoule | |
| YJ Yottajoule | |
| yK Yoctokelvin | |
| YK Yottakelvin | |
| YKYFCW You know you're from Christchurch when (post-earthquake joke) | |
| yL Yoctolitre | |
| YL Yottalitre | |
| ym Yoctometre | |
| Ym Yottametre | |
| YM Yemen (FIPS 10-4 country code)-Your Magazine (originally Young Miss, later Young & Modern) | |
| YMCA Young Men's Christian Association | |
| YMD People's Democratic Republic of Yemen (ISO 3166 trigram, obsolete 1990) | |
| YMMD You Make My Day | |
| YMMV Your Mileage May Vary (adapted from EPA's automobile mileage estimates, used as an idiom to convey "results may vary" | |
| yN Yoctonewton | |
| YN Yottanewton | |
| yo Yoruba language (ISO 639-1 code) | |
| YO former Yugoslavia (NATO country code, obsolete 1993) | |
| YOLO You Only Live Once | |
| yor Yoruba language (ISO 639-2 code) | |
| YPA Yards per Pass Attempt (football statistic) | |
| YPG Yekîneyên Parastina Gel (Kurdish, "People's Protection Units" or "People's Defense Units") | |
| YPIO Your Problem Is Obvious | |
| YPO Young Presidents' Organization | |
| YRR "Young, Restless, and Reformed", an alternative name for the New Calvinist movement | |
| ys Yoctosecond | |
| yS Yoctosiemens | |
| Ys Yottasecond | |
| YS Yottasiemens | |
| YSA Young Single Adult, a designation used by the LDS Church for single adults under 30,Young Socialist Alliance,Youth Service America | |
| YSI Young Scots for Independence | |
| yT Yoctotesla | |
| YT Mayotte (ISO 3166 digram)-Yottatesla-Yukon Territory (postal symbol) | |
| YTD Year-To-Date | |
| YTM Yield to Maturity | |
| YTS Youth Training Scheme | |
| YTT Yoshi Topsy-Turvy | |
| YU York University-former Yugoslavia (ISO 3166 digram, obsolete 2003) | |
| YUG former Yugoslavia (ISO 3166 trigram, obsolete 2003) | |
| Yuppie Young Urban Professional + suffix | |
| yV Yoctovolt | |
| YV Yottavolt | |
| yW Yoctowatt | |
| YW Yottawatt | |
| YWCA Young Women's Christian Association | |
| YWMV Your Wallet May Vary (to convey "our budgets are different as far as what is affordable / justifiable") | |
| YYH YuYu Hakusho | |
| YYK Yeah you know | |
| z Zepto | |
| Z Zetta | |
| za Zhuang languages (ISO 639-1 code) | |
| zA Zeptoampere | |
| ZA South Africa (ISO 3166 digram)-Zambia (FIPS 10-4 country code)-Zettaampere | |
| ZAF South Africa (ISO 3166 trigram) | |
| ZAMS Zero age main sequence | |
| ZAR South African rand (ISO 4217 currency code)-Zaire (ISO 3166 trigram, obsolete 1997) | |
| ZAS (i/a) Zylinder Abschaltung System | |
| ZBT Zero-Balance Transfer (accounting) | |
| zC Zeptocoulomb | |
| ZC Zettacoulomb | |
| ZCM (n) ZENworks Configuration Management | |
| ZCMK Zone Control Master Key | |
| ZCU Zimbabwe Cricket Union | |
| ZEBRA Zebra | |
| zF Zeptofarad | |
| ZF Zettafarad | |
| zg Zeptogram | |
| Zg Zettagram | |
| zh Chinese language (ISO 639-1 code) | |
| zH Zeptohenry | |
| ZH Zettahenry | |
| zha Zhuang languages (ISO 639-2 code) | |
| zho Chinese language (ISO 639-2 code) | |
| Zi Zebi | |
| ZI Zimbabwe (FIPS 10-4 country code) | |
| ZIF Zero Insertion Force (The device on a) | |
| ZIP Zone Improvement Plan code | |
| ZIRP Zero interest-rate policy | |
| zJ Zeptojoule | |
| ZJ Zettajoule | |
| zK Zeptokelvin | |
| ZK Zettakelvin | |
| zL Zeptolitre | |
| ZL Zettalitre | |
| zm Zeptometre | |
| Zm Zettametre | |
| ZM Zambia (ISO 3166 digram) | |
| ZMB Zambia (ISO 3166 trigram) | |
| ZMK Zambian kwacha (ISO 4217 currency code) | |
| zN Zeptonewton | |
| Zn Zinc | |
| ZN Zettanewton | |
| ZOPFAN Zone of Peace, Freedom And Neutrality | |
| Zr Zirconium | |
| ZR Zaire (ISO 3166 digram; obsolete 1997) | |
| zs Zeptosecond | |
| Zs Zettasecond | |
| ZS Zettasiemens | |
| zT Zeptotesla | |
| ZT Zettatesla | |
| zu Zulu language (ISO 639-1 code) | |
| ZUG Z User Group | |
| ZUI Zooming User Interface ("zoo-wee") | |
| zul Zulu language (ISO 639-2 code) | |
| zV Zeptovolt | |
| ZV Zettavolt | |
| zW Zeptowatt | |
| ZW Zettawatt-Zimbabwe (ISO 3166 digram) | |
| ZWD Zimbabwe dollar (ISO 4217 currency code) | |
| ZWE Zimbabwe (ISO 3166 trigram) | |
| ZZZ to be tired (internet slang) |
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| # coding=utf-8 | |
| ignore_list = ('Search-Navigation','Tools-What links','Top-','Contents','Magyar') | |
| with open('AcronymsFile.csv','r') as inp: | |
| data = inp.read().split('\n') | |
| with open('clean_AcronymsFile.csv','w') as out: | |
| out.write('acronym'+'\t'+'definition'+'\n') | |
| for line in data: | |
| if not line.startswith(ignore_list): | |
| tmp = line.split('-') | |
| acronym = tmp[0].strip() | |
| definition = '-'.join([x.strip() for x in tmp[1:]]) | |
| out.write(acronym+'\t'+definition+'\n') |
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