PowerShell/Data/Abbr/Misc.csv

1	Abbr,Description
2	0D,obvious deed
3	1AM,Air Mechanic 1st Class
4	1D,One-Dimensional
5	2AM,Air Mechanic 2nd Class
6	2D, Two-dimensional
7	2G, Second-generation mobile (cellular, wireless) telephone system
8	2LA,Two Letter Acronym
9	2Lt,2nd Lieutenant
10	3AM,Air Mechanic 3rd Class
11	3D, Three-Dimensional
12	3G, Third-generation mobile telephone system
13	3i, Investors In Industry (venture capitalists)
14	3M, Minnesota Mining and Manufacturing Company
15	4D, Four-Dimensional (usually three spatial plus one temporal dimension, sometimes four spatial ones)
16	4G, Fourth-generation mobile telephone system
17	4GL, Fourth-generation programming language
18	4WD, Four-wheel drive
19	5D,Five-Dimensional
20	6D,Six-Dimensional
21	7D,Seven-Dimensional
22	8D,Eight-Dimensional
23	9D,Nine-Dimensional
24	\a, Atto-
25	A, Ampere
26	A1C,Airman First Class
27	A4,many, including a European standard office paper size; see entry
28	A10, Atlantic 10 Conference
29	aa, Afar language (ISO 639-1 code)
30	aA, Attoampere
31	AA- achieved availability,Alcoholics Anonymous, Armed Forces Americas (postal symbol),Aruba (FIPS 10-4 territory code), assembly area,Automobile Association,avenue of approach
32	AAAI, Association for the Advancement of Artificial Intelligence, formerly American Association for Artificial Intelligence
33	AAAS, American Association for the Advancement of Science
34	AAAV, Advanced Amphibious Assault Vehicle
35	AAC- American Athletic Conference,Army Air Corps (British Army)
36	AAD- analogue-analogue-digital (CD quality),Australian Antarctic Division
37	AADD,Adult attention deficit disorder
38	AADT, annual average daily traffic
39	AADAC, Alberta Alcohol and Drug Abuse Commission
40	AADC- area air defense commander, amino acid decarboxylase, aromatic L-amino acid decarboxylase, Australian Antarctic Data Centre
41	AAFC- U.S. Army Air Corps Ferrying Command (1941-1942),All-America Football Conference (1946-1949)
42	AAFES, Army and Air Force Exchange Service
43	AAI, applied artificial intelligence
44	AAIS, advanced airborne interceptor simulator
45	AAM, air-to-air missile
46	AAMOF, as a matter of fact
47	AAN, American Academy of Nursing
48	AANEAS, Anglo-Australian Near-Earth Asteroid Survey
49	AAODL, Atmospheric Aerosols and Optics Data Library
50	AAP- advanced acquisition plan,Allied administrative publication,American Academy of Pediatrics
51	AAPC, Accounting and Auditing Policy Committee
52	aar, Afar language (ISO 639-2 code)
53	AAR- after-action review,Association of American Railroads
54	AARP,(i/s) American Association of Retired Persons (now officially known only by the initials)
55	AASPEM, advanced air-to-air system performance evaluation model
56	AAT, Australian Antarctic Territory
57	AAV, Amphibious Assault Vehicle
58	AAWC, anti-air warfare commander
59	ab, Abkhaz language (ISO 639-1 code)
60	AB- Able Seaman (both the rank and the occupation), Alberta (postal symbol)
61	ABA- Adriatic Basketball Association,American Bar Association,American Basketball Association,American Beverage Association,American Bicycle Association,American Birding Association,Australian Broadcasting Authority
62	ABB, ASEA Brown Boveri (Swiss-Swedish multinational company)
63	ABBA, Agnetha, Benny, Björn, Anni-Frid (Swedish pop group)
64	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
65	ABCA- American, British and Canadian Armies (originally),Army Bureau of Current Affairs
66	ABCS, (U.S.) Army Battle Command System
67	ABET, Accreditation Board for Engineering and Technology
68	ABFIST, Advanced Bradley Full Crew Interactive Skills Trainer
69	ABGI, Addington-Barker Group International
70	ABIN, Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
71	abk, Abkhaz language (ISO 639-2 code)
72	ABL, American Basketball League
73	ABLE, AirBorne Law Enforcement (police air support unit)
74	ABM, anti-ballistic missile,Asynchronous Balanced Mode,automated banking machine
75	ABMC, American Battle Monuments Commission
76	ABN, Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
77	ABPI, Association of the British Pharmaceutical Industry
78	ABRSM, Associated Board of the Royal Schools of Music
79	ABS- acrylonitrile butadiene styrene,anti-lock braking system
80	ABSTRIPS, abstraction-based STRIPS
81	ABV, Alcohol by volume
82	ABW, Aruba (ISO 3166 trigram)
83	aC, Attocoulomb
84	Ac, Actinium
85	AC1,Aircraftman 1st Class
86	AC2,Aircraftman 2nd Class
87	ACARS, Aircraft Communications Addressing and Reporting System
88	ACAS- Aboriginal Children's Advancement Society,Advisory, Conciliation and Arbitration Service
89	ACC- U.S. Air Combat Command,Air Component Commander,Alpine Club of Canada,Altocumulus castellanus,Area Control Center,Atlantic Coast Conference,Automatic climate control
90	ACCA- The Association of Chartered Certified Accountants,Automatic Cloud Cover Assessment
91	ACCAC, Awdurdod Cymwysterau, Cwricwlwm ac Asesu Cymru (Qualifications, Curriculum and Assessment Authority for Wales)
92	ACCD,American Coalition of Citizens with Disabilities
93	ACCS, Air Communications and Control Squadron
94	ACDA, Arms Control & Disarmament Agency
95	ACDC- Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
96	ACDT- Apple Certified Desktop Technician, Australian Central Daylight Time
97	ACE- Air Combat Emulator (computer game),Allied Command Europe,Armored Combat Earthmover,Automatic Computing Engine
98	ACF- Administration for Children and Families,American Car and Foundry,American Culinary Federation
99	ACHT, Average Call Hold Time
100	ACID, Atomicity, Consistency, Isolation, and Durability (in databases)
101	ACINT, Acoustic Intelligence
102	ACK, Acknowledge (telecommunications; cf. NAK)
103	ACL- Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
104	ACLJ, American Center for Law and Justice
105	ACLOS, Automatic CLOS (missile control system)
106	ACLS, American Council of Learned Societies
107	ACLU- American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
108	ACM,many, including Association for Computing Machinery; see entry
109	ACMC, (U.S.) Assistant Commandant of the Marine Corps
110	ACN- Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
111	ACNA, Anglican Church in North America
112	ACO, Airspace Control Order
113	ACOBA, Advisory Committee on Business Appointments
114	ACOG, American College of Obstetricians and Gynecologists
115	ACOM, (U.S.) Atlantic Command
116	ACORN, Association of Community Organizations for Reform Now
117	ACP- African, Caribbean and Pacific Group of States,Air Control Point
118	ACR, Advanced Concepts and Requirements
119	ACRI, African Crisis Initiative
120	ACRT, Advanced Concepts Research Tool simulator
121	ACS- Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
122	ACSC, Army Command and Staff College (various nations)
123	ACST, Australian Central Standard Time
124	ACST, American Cooperative School of Tunis
125	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
126	ACTD, Advanced Concept Technology Demonstration
127	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)
128	ACTU, Australian Council of Trade Unions
129	ACU, American Conservative Union
130	ACUF- BGN Advisory Committee on Undersea Features, American Conservative Union Foundation
131	ACV, Armoured Combat Vehicle
132	ADA, Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
133	ADAGE, Air Defense Air to Ground Engagement (simulation)
134	ADAP, AIDS Drug Assistance Program
135	ADAS,(a/i) Asiago-DLR Asteroid Survey
136	ADAT, Alesis Digital Audio Tape (recording format)
137	ADatP, Automated Data Processing
138	ADATS, Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
139	ADB, Asian Development Bank
140	ADC, Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
141	ADCTS, Advanced Distributed Combat Training System
142	ADD, Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
143	ADDIE, Analyze Design Develop Implement and Evaluate
144	ADDNS, Advanced Deployable Day/Night Simulation
145	ADF, Australian Defence Force,African Development Foundation
146	ADGB,Air Defence of Great Britain
147	ADHD, Attention-Deficit Hyperactivity Disorder
148	ADHS, Attention-Deficit Hyperactivity Syndrome
149	ADI, Acceptable/Allowable Daily Intake
150	ADIZ,(a/i) Air Defence Identification Zone
151	ADL, Anti-Defamation League
152	ADM, Administrative,,Admiral, and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
153	ADOA,(a/i) Air Defence Operations Area
154	ADP, Adenosine DiPhosphate,Army Doctrine Publication (UK, Canada, Australia),Automatic/Automated Data Processing
155	ADRG, Arc-second Raster Chart (ARC) Digitized Raster Graphics
156	ADS,(a/i) Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
157	ADSR, Attack, Decay, Sustain, Release (sound envelope specification)
158	ADT, Atlantic Daylight Time (UTC−3 hours)
159	ADTB, Army Doctrine and Training Bulletin
160	ADW, Air Defence Warning
161	ae, Avestan language (ISO 639-1 code)
162	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
163	AED, United Arab Emirates dirham (ISO 4217 currency code)
164	AEDT, Australian Eastern Daylight Time
165	AEF, American Expeditionary Force
166	AEGIS, Airborne Early warning Ground environment Interface Segment (fake etymology)
167	AESR, Aeronautical Equipment Service Record
168	AEST, Australian Eastern Standard Time
169	aet, After extra time (Football)
170	AEW, Airborne Early Warning,Airborne Electronic Warfare
171	af, Afrikaans language (ISO 639-1 code)
172	aF, Attofarad
173	AF- Afghanistan (FIPS 10-4 country code; ISO 3166 digram), Air Force,As f*ck
174	AFAIC, As Far As I'm Concerned
175	AFAICT, As Far As I Can Tell
176	AFAIK, As Far As I Know
177	AFAIR, As Far As I Remember/Recall
178	AFATDS, Advanced Field Artillery Tactical Data System
179	AFC- American Football Conference,Asian Football Confederation
180	AFCEA, Armed Forces Communications and Electronics Association
181	AFDB, African Development Bank
182	AFES, Automatic Fire Extinguishing System
183	AFG, Afghanistan (ISO 3166 trigram)
184	AFIS- Automated Fingerprint Identification System,American Forces Information Service
185	AFIST, Abrams Full Crew Interactive Skills Trainer
186	AFJ, April Fool's Joke
187	AFK, Away From Keyboard (Internet chat abbreviation)
188	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
189	AFLAC, American Family Life Assurance Company of Columbus
190	AFM, Army Field Manual (UK; the U.S. more frequently uses just FM),Atomic Force Microscope,Aviation Fleet Maintenance
191	AFN, Afghani (ISO 4217 currency code)
192	AFO, Association of Field Ornithologists
193	AFOSR, U.S. Air Force Office of Scientific Research
194	AFQT, Armed Forces Qualification Test
195	afr, Afrikaans language (ISO 639-2 code)
196	AFRC, Air Force Reserve Command
197	AFRL, Air Force Research Laboratory
198	AFROTC, Air Force Reserve Officer Training Corps
199	AFRRI,(i, U.S.) Armed Forces Radiobiology Research Institute
200	AFRTS, Armed Forces Radio and Television Service
201	AFS- Active Front Steering,Air Facility Sub-System,Amniotic Fluid-derived Stem cell,AFS&A or AFSA, U.S. Air Force Studies and Analysis
202	AFSC- U.S. Air Force Staff College (obsolete; replaced with JFSC),U.S. Air Force Systems Command
203	AFSCN, U.S. Air Force Satellite Control Network
204	AFSPC, Air Force Space Command
205	AFT,American Farmland Trust
206	AFV, armoured fighting vehicle
207	AFWA- Air Force Weather Agency,Association of Fish and Wildlife Agencies,AG[edit]
208	ag, Attogram
209	Ag, Silver (Latin argentum)
210	AGARD, Advisory Group for Aerospace Research and Development
211	AGARDograph, Advanced Guidance for Alliance Research and Development publication
212	AGASA, Akeno Giant Air Shower Array (cosmic ray detector)
213	AGB, Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
214	AGC- Apollo Guidance Computer,Automatic Gain Control
215	AGC, Adjutant General's Corps (British Army)
216	AGDC, Australian Game Developers' Conference
217	AGI, Auxiliary Group Intelligence
218	AGL, Above Ground Level
219	AGM, Annual General Meeting
220	AGN, Active Galactic Nucleus
221	AGO, Angola (ISO 3166 trigram)
222	AGP, Accelerated Graphics Port
223	AGRICOLA, Agriculture Online Access
224	AGS, Alaska Ground Station (LandSat)
225	AGTS, Advanced Gunnery Training System
226	AGU, American Geophysical Union
227	AGW, Autonomous Guided Weapon
228	aH, Attohenry
229	Ah, Ampere-hour
230	AH, Attack Helicopter
231	AHA, American Heart Association
232	AHCPR, Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
233	AHEC, Australian Health Ethics Committee
234	AHPCRC, Army High Performance Computing Research Center
235	AHQ,Air Headquarters
236	AHRQ, Agency for Healthcare Research and Quality
237	AHS, American Housing Survey
238	AI- Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence, Anguilla (ISO 3166 digram)
239	AIA- Aerospace Industries Association,American Institute of Architects, Anguilla (ISO 3166 trigram)
240	AIAA, American Institute of Aeronautics and Astronautics
241	AIC- African Independent Church,Animal Identification Coordinator
242	AICD, Australian Institute of Company Directors
243	AICMFP, And I Claim My Five Pounds
244	AID, U.S. Agency for International Development
245	AIDS, Acquired Immune Deficiency Syndrome
246	AIM,many, including AOL Instant Messenger, Australian Institute of Management; see entry
247	AIMP, Aurora Incremental Modernization Project
248	AIPAC, American Israel Public Affairs Committee
249	AIR, Aircraft Inventory Record
250	AIRFA, American Indian Religious Freedom Act
251	AIRS,(a/i) Aerometric Information Retrieval System (obsolete; replaced with AFS)
252	AIS- Australian Institute of Sport,Automatic Identification System
253	AISB, (British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
254	aJ, Attojoule
255	AJ, Azerbaijan (FIPS 10-4 country code)
256	Ajax, Asynchronous JavaScript And XML
257	AJD, Astronomical Julian day
258	AJP, Allied Joint Publication
259	AJPW, All Japan Pro Wrestling
260	ak, Akan languages (ISO 639-1 code)
261	aK, Attokelvin
262	AK, Alaska (postal symbol)
263	aka, Akan languages (ISO 639-2 code)
264	AKA, Above knee amputation (orthopaedic usage)
265	AKDT, Alaska Standard Daylight Saving Time (UTC−8 hours)
266	AKST, Alaska Standard Time (UTC−9 hours)
267	aL, Attolitre
268	Al, Aluminium
269	ALA, Åland Islands (ISO 3166 trigram)
270	ALAP, As Long/Late As Possible
271	ALARM, Air-Launched Anti-Radar Missile
272	ALB, Albania (ISO 3166 trigram)
273	ALD, Accounting Line Designator (nuclear weapon targeting)
274	ALERT, Advanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
275	ALF- Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
276	ALG, Algeria (IOC and FIFA trigram, but not ISO 3166)
277	ALGOL, ALGOrithmic Language
278	ALL, Albanian lek (ISO 4217 currency code)
279	ALOA, Associated Locksmiths of America, Inc.
280	ALOC- Air Lines Of Communication, Average Length of Calls
281	ALPA, Air Line Pilots Association
282	ALS, Amyotrophic Lateral Sclerosis,Automatic Landing System
283	ALSHS, Abraham Low Self-Help Systems
284	ALSP, Aggregate Level Simulation Protocol
285	ALTE, Association of Language Testers in Europe
286	ALTACS, Automated decision Logic Tactical Air Combat Simulation
287	am- Amharic language (ISO 639-1 code),Attometre
288	Am, Americium
289	AM-many, including Amplitude Modulation and Ante Meridiem; see entry, Armenia (FIPS 10-4 country code; ISO 3166 digram)
290	AM1,Airman 1st class
291	AMA- American Medical Association,Australian Medical Association
292	AMAPS, Aircraft, Missile, Avionics Performance Simulation
293	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
294	AMCB, U.S. Army/Marine Corps Board
295	AMD- Advanced Micro Devices,Age-related Macular Degeneration, Armenian dram (ISO 4217 currency code)
296	AMF, Afghan Military Force
297	AMFR- Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
298	AMFRS- Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
299	amh, Amharic language (ISO 639-2 code)
300	AML, Acute Myeloid Leukaemia
301	AMLCD, Active Matrix Liquid Crystal Display
302	AMLO- Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
303	AMO, Atlantic Multidecadal Oscillation
304	AMOLED, Active-matrix organic light-emitting diode
305	AMOS- Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
306	AMP- Adenosine MonoPhosphate,Automated Mission Planner
307	AMRAAM, Advanced Medium-Range Air-to-Air Missile
308	AMRDEC, U.S. Aviation & Missile Research, Development, & Engineering Center
309	AMS- Agriculture Marketing Service,American Mathematical Society
310	AMSAA,(i/a) U.S. Army Materiel Systems Analysis Activity
311	AMSO,(i/a) U.S. Army Model and Simulation Office
312	AMSU,Advanced Microwave Sounding Unit
313	AMTE, UK Admiralty Marine Technology Establishment (1977-1984)
314	an, Aragonese language (ISO 639-1 code)
315	aN, Attonewton
316	AN- Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram)
317	ANA- Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body, Australian National Airways,Australian Natives' Association
318	ANC, African National Congress
319	AND, Andorra (ISO 3166 trigram)
320	ANFO, Ammonium nitrate/fuel oil (explosive)
321	ANG- Air National Guard, Angola (IOC and FIFA trigram, but not ISO 3166), Netherlands Antillian guilder (ISO 4217 currency code)
322	ANGLiCo, Air/Naval Gunfire Liaison Company
323	ANL, Argonne National Laboratory
324	ANM, Acoustic Noise Monitor
325	ANOVA, ANalysis Of VAriance
326	ANS, Applied and Natural Sciences
327	ANSI, American National Standards Institute
328	ANTM, America's Next Top Model
329	ANT- Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram, but not ISO 3166 or FIFA)
330	ANTY,Acronyms, No Thank You
331	ANWR, Arctic National Wildlife Refuge /ˈænwɑr/
332	ANZ, Australia and New Zealand Banking Group
333	ANZAC, Australian and New Zealand Army Corps
334	AO, Angola (FIPS 10-4 country code; ISO 3166 digram), Approach Officer (submarine),Area of Operations
335	AOA, Air Officer in charge of Administration,Argonne National Laboratory, Angolan kwanza (ISO 4217 currency code), Award Of Arms (heraldry)
336	AOC, Air Operations Centre,Air Officer Commanding
337	AOD, Adrenalin O.D. (punk rock band)
338	AOI, Angle Of Incidence Arab Organization for Industrialization
339	AOL, America OnLine
340	AOR, Area of Responsibility
341	AOSTH, Adventures of Sonic the Hedgehog
342	AOTS, Attack of the Show!
343	AOU, American Ornithologists' Union
344	AP- Advanced Placement,Air Publication, Andhra Pradesh (Indian state code), Armed Forces Pacific (postal symbol), Associated Press,Auto Pilot
345	APA -
346	APB, All Points Bulletin (police jargon)
347	APC- Armoured Personnel Carrier,Armour Piercing Capped (ammunition)
348	APEC, Asia Pacific Economic Cooperation
349	APCNR, Armour-Piercing, Composite Non-Rigid (ammunition)
350	APCR, Armour-Piercing, Composite Rigid (ammunition)
351	APDS, Armour-Piercing, Discarding-Sabot (ammunition)
352	APEDS, AMSAA Performance Estimates Data System
353	APEX, Applied Physics Express
354	APFSDS, Armour-Piercing, Fin-Stabilised, Discarding Sabot (ammunition)
355	APHA, American Public Health Association
356	APHE, Armour-Piercing, High Explosive (ammunition)
357	APHIS, Animal and Plant Health Inspection Service
358	API, Application Programming Interface
359	APL- A Programming Language,Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
360	APM, Advanced Power Management
361	APOD, Aerial Port (Airport) Of Debarkation
362	APOE, Aerial Port (Airport) Of Embarkation
363	APOLLO, Apache Point Observatory Lunar Laser-ranging Operation
364	APP, Allied Procedural Publication
365	APR, Annual Percentage Rate
366	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]
367	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
368	AQIM, Al-Qaeda in the Islamic Maghreb
369	ar, Arabic language (ISO 639-1 code)
370	Ar, Argon
371	AR, Argentina (FIPS 10-4 country code; ISO 3166 digram),Arkansas (postal symbol),Armour, Arunachal Pradesh (Indian state code)
372	ara, Arabic language (ISO 639-2 code)
373	ARAG, Advanced Research and Assessment Group
374	ARB, Administrative Review Board
375	ARBA,(a/i) Army Review Boards Agency
376	ARC, Arc-second Raster Chart,Appalachian Regional Commission
377	ARCA, Automobile Racing Club of America
378	ARCENT, United States Army Central Command
379	ARDA, Advanced Research and Development Activity (became DTO 2006)
380	ARE, UK Admiralty Research Establishment (-1991), United Arab Emirates (ISO 3166 trigram)
381	ARF, ASEAN Regional Forum
382	arg, Aragonese language (ISO 639-2 code)
383	ARG, Argentina (ISO 3166 trigram)
384	ARH, Armed Reconnaissance Helicopter
385	ARI, Acute Respiratory Infection,U.S. Army Research Institute for the Behavioral and Social Sciences
386	ARL, UK Admiralty Research Laboratory (1921-1977),U.S. Army Research Laboratory,UIUC Aviation Research Laboratory
387	ARM, Anti-Radiation Missile,Adjustable-rate mortgage, Armenia (ISO 3166 trigram)
388	ARNet, Acquisition Reform Network
389	ARP, Address Resolution Protocol,Applied Research Programme
390	ARPA, Advanced Research Projects Agency
391	ARRC, ACE Rapid Reaction Corps
392	ARRF, Allied Rapid Reaction Force
393	ARRL, American Radio Relay League
394	ARS, Agricultural Research Service, Argentine peso (ISO 4217 currency code)
395	ARSC, Arctic Region Supercomputing Center
396	ARSPACE, U.S. Army Space Command
397	ART, Adaptive Resonance Theory,Anti-Retroviral Therapy
398	ARTCC, Air Route Traffic Control Center
399	as, Adult swim, Assamese language (ISO 639-1 code),Attosecond
400	aS, Attosiemens
401	As, Arsenic
402	AS, American Samoa (postal symbol; ISO 3166 digram),Australia (FIPS 10-4 country code),Assam / Asom (Indian state code)
403	AS, ActionScript
404	ASA, AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
405	ASAP, As Soon As Possible
406	ASARS, Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
407	ASB, Associated Student Body,Alternative Service Book (Church of England)
408	ASBO, Anti-Social Behaviour Order
409	ASCAP, American Society of Composers, Authors, and Publishers
410	ASCC, Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
411	ASCIET, All Services Combat Identification Evaluation Team
412	ASCII, American Standard Code for Information Interchange
413	ASD, (U.S.) Assistant Secretary of Defense,autism spectrum disorder
414	ASDIC, Allied Submarine Detection Investigation Committee (Sonar)
415	ASEAN, Association of Southeast Asian Nations
416	ASFAR, Americans for a Society Free of Age Restrictions
417	ASG, Area Support Group
418	ASIC, Australian Securities and Investments Commission, Aviation Security Identification Card
419	ASIO, Australian Security Intelligence Organisation, Audio stream input output
420	ASIP, Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
421	asm, Assamese language (ISO 639-2 code)
422	ASM, Air-to-Surface Missile, American Samoa (ISO 3166 trigram), American Society for Metals, American Society for Microbiology
423	ASMB, American Society for Matrix Biology,Adult Swim Message Board
424	ASME, American Society of Mechanical Engineers,American Society of Magazine ors
425	ASN, Associate of Science in Nursing
426	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
427	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
428	ASPI, Australian Strategic Policy Institute
429	ASR, Alkali-silica reaction,Anti Slip Regulation
430	ASRAAM, Advanced Short-Range Air-to-Air Missile
431	ASSC, Association for the Scientific Study of Consciousness
432	AST, Atlantic Standard Time (UTC−4 hours)
433	ASTIA, Armed Services Technical Information Agency
434	ASTM, American Society for Testing and Materials
435	ASTREA, Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
436	ASUW, AntiSUrface Warfare
437	ASVAB,Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
438	ASW, AntiSubmarine Warfare
439	ASWORG, (U.S.) AntiSubmarine Warfare Operations Research Group
440	ASX, Advanced Stream Redirector,Australian Securities Exchange
441	aT, Attotesla
442	At, Astatine
443	AT, Anti-Tank, Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram), Advanced Technology (IBM Personal Computer/AT)
444	ATA, Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array, Antarctica (ISO 3166 trigram)
445	ATAC, Air Transportable Acoustic Communications
446	ATACMS, Army TACtical Missile System
447	ATAPI, Advanced Technology Attachment Packet Interface
448	ATAS, Air-To-Air Stinger (missile)
449	ATAT, Aiken Tactical Airsoft Team / Star Wars vehicle
450	ATB, Active Time Battle, British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
451	ATC, Air Traffic Control,Air Training Corps,U.S. Air Transport Command (1942-1948)- Athletic Trainer, Certified (www.nata.org)
452	ATCCIS, Army Tactical Command and Control Information System
453	ATESS, Aerospace and Telecommunications Engineering Support Squadron
454	ATG, Antigua and Barbuda (ISO 3166 and FIFA trigram)
455	ATGM, Anti-Tank Guided Missile
456	ATGW, Anti-Tank Guided Weapon
457	ATI, Allied Telesyn International, Inc., Array Technologies Incorporated. (ATI Technologies)
458	Atisbo,a Local Government Area in Nigeria named for constituent communities (Ago-Are, Tede, Irawo, Sabe, Baasi, Ofiki and Owo)
459	ATK, Attack
460	ATL, Atlanta, Georgia, the largest city and capital of Georgia
461	ATLAS, All-Terrain Lifter Army System, Assessment Tool for LAnd Systems
462	ATM, Automated Teller Machine,Asynchronous Transfer Mode,At The Moment
463	ATN, Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
464	ATO, Air Tasking Order,Australian Taxation Office
465	ATP, Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
466	ATSD, (U.S.) Assistant Secretary of Defense
467	ATSDR, Agency for Toxic Substances and Disease Registry
468	ATV, All-Terrain Vehicle
469	ATWA, Air, Trees, Water, Animals
470	Au, Gold (Latin Aurum)
471	AU, African Union (was OAU before 2000),American University, Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
472	AUD, Australian dollar (ISO 4217 currency code)
473	AUS, Australia (ISO 3166 trigram)
474	AUSCANNZUKUS, Australia, Canada, New Zealand, United Kingdom, United States (security designation)
475	Auslan, Australian Sign Language
476	AUT, Austria (ISO 3166 trigram)
477	AUTL, Army Universal Task List
478	av, Avar language (ISO 639-1 code)
479	aV, Attovolt
480	Av, Aperture value (photographic mode)
481	AV- Anguilla (FIPS 10-4 territory code), Audio-Visual, Aviation
482	ava, Avar language (ISO 639-2 code)
483	AVA, American Viticultural Area
484	AVB, Audio Video Bridging
485	AVDLR, Aviation Depot Level Repair
486	ave, Avestan language (ISO 639-2 code)
487	AVGP, Armoured Vehicle, General Purpose
488	AVI, Audio Video Interleave
489	AVIM, Aviation Intermediate Maintenance
490	AVLB, Armoured Vehicle Launched Body
491	AVM- Air Vice-Marshal, Arteriovenous malformation
492	AVO, Apprehended Violence Order
493	AVP, Arubaanse Volkspartij
494	AVP, Association of Volleyball Professionals
495	AVRE, Armoured Vehicle Royal Engineers
496	AVTB- Armoured Vehicle Test Bed, Aviation Test Bed
497	AVUM, Aviation Unit Maintenance
498	AVVO, Acute Vaginal Venereal Outbreak
499	aW, Attowatt
500	AW, Aruba (ISO 3166 digram)
501	AWA, American Wrestling Association
502	AWACS, Airborne Warning And Control System
503	AWC, Air Warfare Centre
504	AWD,many, including All Wheel Drive; see entry
505	AWE,(i/a) Advanced Warfighting Experiment
506	AWG, Aruban guilder (ISO 4217 currency code)
507	AWOL, Absent Without Official Leave / Absent WithOut Leave (military jargon)
508	AWP, Awaiting Parts (SM&R code)
509	AWSIM, Air Warfare SIMulation
510	AWST, Australian Western Standard Time
511	AWW, Above Water Warfare
512	AX, Åland Islands (ISO 3166 digram)
513	AXP, Ambulance eXchange Point
514	ay, Aymara language (ISO 639-1 code)
515	AY, Antarctica (FIPS 10-4 territory code)
516	AYBABTU, All Your Base Are Belong To Us
517	aym, Aymara language (ISO 639-2 code)
518	AYU, As Yet Unknown
519	az, Azerbaijani language (ISO 639-1 code)
520	AZ- Arizona (postal symbol),Azerbaijan (ISO 3166 digram), Alkmaar Zaanstreek (Dutch football club)
521	aze, Azerbaijani language (ISO 639-2 code)
522	AZE, Azerbaijan (ISO 3166 trigram)
523	AZN, Azerbaijani manat (ISO 4217 currency code)
524	AZUR, Actions en zone urbaine (French, Urban Operations)
525	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 Agency,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]
526	BB- Barbados (ISO 3166 digram; FIPS 10-4 country code), Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
527	BBB- Better Business Bureau,Blood-brain barrier
528	BBC- Breeding Bird Census,British Broadcasting Corporation, Bumper to Back of Cab (trucking measurement)
529	BBD- Barbadian dollar (ISO 4217 currency code), Bowel Bladder Dysfunction
530	BBL- Be Back Later,Bird Banding Laboratory,British Basketball League,BBN - Bolt, Beranek and Newman,BBQ - Barbecue[1]
531	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)
532	BBYO,B'nai B'rith Youth Organization
533	BC- Before Christ,Blind Copy (in emailers),Boston College, Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
534	BCA- Bachelor of Computer Application,Black Coaches & Administrators,BCC - Blind Carbon Copy
535	BCCI- Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD - Binary-Coded Decimal
536	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,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),BDTA - British Dental Trade Association,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)
537	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
538	BH- Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code),BHD - Bahraini dinar (ISO 4217 currency code),BHR - Bahrain (ISO 3166 trigram)
539	BNF- Backus-Naur Form (computing),British National Formulary,BNICE - Biological, Nuclear, Incendiary, Chemical, and Explosive Agents
540	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)
541	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)
542	BoAML,Bank of America Merrill Lynch
543	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
544	BOGs, Bunch of Guys
545	BOI- Balance Of Investment,Basis Of Issue,BOL - Bolivia (ISO 3166 trigram)
546	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
547	BOQ- Bill Of Quotations,Bachelor Officers' Quarters,Bank Of Queensland,bos - Bosnian language (ISO 639-2 code),BOS - Battlefield Operating System
548	BOT- Balance of Trade, Botswana (IOC and FIFA trigram, but not ISO 3166), Build Operate Transfer, Bank of Thailand,BP[edit]
549	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
550	BPV- Battlefield Planning Visualization,Bovine papillomavirus,BQ[edit]
551	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
552	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)
553	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)
554	BS- The Bahamas (ISO 3166 digram),Bassas da India (FIPS 10-4 territory code),Bachelor of Science degree,British subject
555	Bullshit-
556	BSA- Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
557	BSatCoP,Benjamin Sniddlegrass and the Cauldron of Penguins
558	BSD- Bahamian dollar (ISO 4217 currency code), Berkeley Software Distribution (distinct from BSoD)
559	BSE, Bovine Spongiform Encephalopathy, better known as mad cow disease
560	BSNL-Bharat Sanchar Nigam Limited, Bachelor of Science in Nursing,BSoD - Blue Screen of Death (distinct from BSD)
561	BSP- Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread), Business-sponsored,Bone sialoprotein
562	BST- Binary search tree,Blended Sales Tax, Bovine somatotropin, British Summer Time,BSW - British Standard Whitworth (screw thread),BSX - Bendigo Stock Exchange,BT[edit]
563	Bt- Baronet,Bacillus thuringiensis
564	c, Centi
565	C, Carbon,Coulomb,One Hundred (in Roman numerals)
566	c2c, the British rail company formerly known as LTS Rail
567	C2C, Consumer-To-Consumer electronic commerce,Cam-To-Cam internet chat
568	ca, Catalan language (ISO 639-1 code)
569	Ca, Calcium
570	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
571	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
572	CAAT- or Campaign Against Arms Trade,Center for Alternatives to Animal Testing
573	CAC- California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier,CACM Central American Common Market
574	CACM, Communications of the ACM
575	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
576	CADCAM, Computer-Aided Design/Computer-Aided Manufacturing
577	CADPAT, CAnadian Disruptive PATtern
578	CADMID, Concept, Assessment, Demonstration, Manufacture, In service, Disposal (life cycle mnemonic)
579	CAE- Canadian Aviation Electronics (originally),Certificate in Advanced English
580	CAEn,(i/a) Close Action Engagement (constructive simulation)
581	CAF- Central African Republic (ISO 3166 trigram), Confederation of African Football (or French Confédération Africaine de Football)
582	CAFAD, Combined Arms For Air Defence
583	CAFDE- Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
584	CAFE, Corporate Average Fuel Economy standard
585	CAI, Computer Assisted Instruction
586	CAIR, Council on American-Islamic Relations
587	CALABARZON, A region in the Philippines: CAvite, LAguna, BAtangas, Rizal, queZON
588	CALL, (U.S.) Center for Army Lessons Learned
589	CALM, Communications, Air-interface, Long and Medium range
590	CalPERS, California Public Employees' Retirement System
591	Caltrans, California Department of Transpotation
592	CAM- Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
593	CAMRA, CAMpaign for Real Ale
594	CAN, Canada (ISO 3166 trigram)
595	CANA, Convulsive Antidote, Nerve Agent
596	CANDU, CANada Deuterium Uranium (nuclear reactor design)
597	Canola, Canadian oil, low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
598	CAP- Combat Air Patrol,Civil Air Patrol,Common [Operating/Operational] Air Picture,Crisis Action Procedures,Common Agricultural Policy (European Union)
599	CAPES- CAPability Evaluation System, Combined Arms Planning and Execution System
600	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)
601	CARMONETTE, Computerized Monte Carlo Simulation
602	CARP, Computed Air Release Point
603	CART, Championship Auto Racing Teams (now defunct)
604	CAS- Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
605	CASA, Civil Aviation Safety Authority
606	CASE- Cellular ammunition storage equipment,Computer-Aided Software Engineering
607	CASS, Command Activated Sonobuoy System
608	CASTFOREM, Combined Arms and Support Task FORce Evaluation Model
609	CASTOR, Canadian Automatic Small Telescopes for Orbital Research
610	cat, Catalan language (ISO 639-2 code)
611	CAT- Community Acceptance Testing,Computer-Assisted (or Axial) Tomography
612	CATK, Counterattack
613	CATS, Computer Active Technology Suspension
614	CATT,(a/i) Combined Arms Tactical Trainer
615	CAV, Cavalry
616	CAW, Canadian Auto Workers (trade union)
617	CB- Citizens' Band radio, Cambodia (FIPS 10-4 country code)
618	CBC- Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
619	CBE- Commander of the Order of the British Empire,Cab Beside Engine (see truck)
620	CBGB, Country, Blue Grass, and Blues (former New York City nightclub)
621	CBLA, Comparative bullet lead analysis
622	CBN,CardsApp Brand Number
623	CBM,many, including Canadian Baptist Ministries and Commodore Business Machines; see entry
624	CBML, Coalition Battle Management Language
625	CBOL, Consortium for the Barcode of Life
626	CBOT, Chicago Board of Trade
627	CBR, Case-Based Reasoning
628	CBRN, Chemical, Biological, Radiological, or Nuclear (weapon or event)
629	CBRNE, Chemical, Biological, Radiological, Nuclear or [high-yield] Explosive (weapon or event)
630	CBS- Columbia Broadcasting System,Corps Battle Simulation
631	CBT- Cognitive Behaviour Therapy, Combat
632	CBUS, Columbus, Ohio
633	CC,many, including carbon copy; see entry
634	CCA, Counter Command Activity
635	CCC- Canterbury Clothing Company,Civilian Conservation Corps (U.S., 1930s and 1940s),Corpus Christi College, Oxford
636	CCCP- Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik, Russian Союз Советских Социалистических Республик, Union of Soviet Socialist Republics)
637	CCD- Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
638	CCF, Cartoon Cartoon Fridays
639	CCG- Canadian Coast Guard,Collectible Card Game
640	CCGC- Canadian Coast Guard Cutter,Canadian Coast Guard College
641	CCGH, Canadian Coast Guard Hovercraft
642	CCGS- Canadian Coast Guard Ship,Christ Church Grammar School
643	CCH, Computer-Controlled Hostile
644	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)
645	CCII- Command and Control Information Infrastructure,Community Capital Investment Initiative
646	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 Requirements
647	CCIT, Comité consultatif international télégraphique (French for International Telegraph Consultative Committee, merged with the CCIF in 1956 to form the CCITT)
648	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)
649	CCK- Cholecystokinin, Cocos (Keeling) Islands (ISO 3166 trigram)
650	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
651	CCOC- Canadian Children's Opera Chorus,Crosley Car Owners Club
652	CCOP, Coalition Common Operating/Operational Picture
653	CCP- Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
654	CCPA, Consumer Credit Protection Act
655	CCR, Creedence Clearwater Revival
656	CCRAp, Canadian Conservative Reform Alliance party
657	CCRP, Command and Control Research Program
658	CCRTS, Command and Control Research and Technology Symposium
659	CCSCS, Coordinadora de Centrales Sindicales del Cono Sur
660	CCSCS, Consultative Committee for Space Data Systems
661	CCSK, Cyclic Code Shift Keying
662	CCT, Current Commitments Team
663	CCTT, Close Combat Tactical Trainer
664	cd, Candela
665	Cd, Cadmium
666	CD,many, including Compact Disc; see entry
667	CD1, Cluster of Differentiation 1 (a small gene family)
668	CDA, UK Centre for Defence Analysis
669	CDC- Centers for Disease Control and Prevention (originally (U.S.) Communicable Disease Center),Control Data Corporation,Cult of the Dead Cow
670	CDD, Capabilities Development Document
671	CDE, Chemical Defence Equipment
672	CDEC, U.S. Combat Development Experimentation Center
673	CDF- California Department of Forestry [and Fire Protection],Common Data Format, Democratic Republic of Congo franc congolais (ISO 4217 currency code)
674	CDipAF, Certified Diploma in Accounting and Finance
675	CDL, Commercial driver's license
676	CDM- Clean Development Mechanism (Kyoto protocol),Cold Dark Matter (astronomy)
677	CDMA, Code Division Multiple Access
678	CDMSII, Cryogenic Dark Matter Search II
679	Cdr, Commander
680	CDS- Chief of the Defence Staff,Credit default swap
681	Cdt, Commandant
682	CDT, Central Daylight Time (UTC−5 hours)
683	ce, Chechen language (ISO 639-1 code)
684	Ce, Cerium
685	CE,many, including Christian/Common Era (cf. AD); see entry
686	CEA, Campaign Effectiveness Analysis
687	CECOM, U.S. Army Communications and Electronics Command
688	CEI, Competitive Enterprise Institute
689	CENTCOM, United States Central Command
690	CENTO, Central Treaty Organization (Baghdad Pact)
691	CEO, Chief Executive Officer
692	CEP, Circular Error Probable
693	CERCLA, U.S. Comprehensive Environmental Response, Compensation, and Liability Act (Superfund)
694	CERDEC,U.S. Communications-Electronics Research, Development and Engineering Center
695	CERT, Computer Emergency Response Team
696	ces, Czech language (ISO 639-2 code)
697	CESS, Centre for Earth Science Studies (India)
698	CEWC,(a/i) Council for Education in World Citizenship
699	Cf, Californium
700	CF- Canadian Forces, Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
701	CFA- Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
702	CFAR- Christine's,Federal Acquisition Regulation
703	CFC- ChloroFluoroCarbon,Canadian Fish Company
704	CFES, Continuous Flow Electrophoresis System
705	CFFZ, Call For Fire Zone
706	CFG- Context-free grammar,Control flow graph
707	CFHT, Canada-France-Hawaii Telescope
708	CFI, Center for Inquiry (CSICOP)
709	CFL- Canadian Football League,Co-ordinated Fire Line
710	CFLCC, Coalition Forces Land Component Command
711	CFM, Certified Facilities Manager [(IFMA)]http://www.ifma.org/
712	CFO, Chief Financial Officer
713	CFP- Call for papers,College Football Playoff,Common Fisheries Policy (EU)
714	CFRP, Carbon fibre reinforced plastic
715	CFS, Chronic Fatigue Syndrome
716	CFSP, Common Foreign and Security Policy
717	CFU, Colony Forming Unit in Microbiology
718	CFV, Cavalry Fighting Vehicle
719	CFZ, Critical Friendly Zone
720	CG, Client Group,Computer Graphics,Controls Group, Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
721	CGDC, Computer Game Developers Conference (became GDC in 1998)
722	CGF, Computer-Generated Forces (Simulation)
723	CGH, Comparative Genomic Hybridisation
724	CGIG, Cross-Government Implementation Group
725	CGM, Computer Graphics Metafile
726	CGO, Republic of the Congo (IOC and FIFA trigram, but not ISO 3166)
727	CGS, Chief of the General Staff
728	CGT, Capital Gains Tax
729	ch, Chamorro language (ISO 639-1 code)
730	ch,ch(L) is used to denote the Chern character of a line bundle
731	CH, Chieftain tank, China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
732	cha, Chamorro language (ISO 639-2 code)
733	CHAMPUS, (U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
734	CHAOS, Cambridge Heart Anti-Oxidant Study
735	CHAPS, Clearing House Automated Payment System
736	CHDK, Canon Hack Development Kit (Canon camera firmware hack)
737	che, Chechen language (ISO 639-2 code)
738	CHE, Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
739	CHF, Swiss franc (ISO 4217 currency code)
740	CHI, Columbia Helicopters, Inc
741	CHI, Computer-Human Interaction
742	CHiP, California Highway Patrol
743	CHIPS, Cosmic Hot Interstellar Plasma Spectrometer
744	CHL, Chile (ISO 3166 trigram)
745	CHLA, Core Historical Literature of Agriculture
746	CHN, China (ISO 3166 trigram)
747	CHOGM, Commonwealth Heads of Government Meeting
748	CHP, California Highway Patrol,Combined Heat and Power
749	CHPSO, California Hospital Patient Safety Organization
750	CHS, Combat Health Support
751	CHT, Certified Hand Therapist
752	chu, Old Church Slavonic language (ISO 639-2 code)
753	chv, Chuvash language (ISO 639-2 code)
754	CREN, Christian Real Estate Network Real Estate Association
755	Ci, Curie
756	CI- Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram), Counter-Intelligence,101 (in Roman numerals)
757	CIA- Cairo International Airport,Central Intelligence Agency,Culinary Institute of America
758	CIAO- Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
759	CIB, Complete In Box (Internet auction/trading listings)
760	CIBC, Canadian Imperial Bank of Commerce
761	CID- Combat Identification, Criminal Investigation Division,Criminal Investigations Department
762	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.
763	CIEF, Comité international d'enregistrement des fréquences (International Frequency Registration Board)
764	CIF, Cost, Insurance, and Freight (Paid) (shipping)
765	CIMIC, Civil-Military Co-operation
766	CINC, Commander in Chief
767	CINEOS, Campo Imperatore Near-Earth Object Survey
768	CIO- Chief information officer,Congress of Industrial Organizations
769	CIP, Combat Identification Panel
770	CIPE, (European) Centre for International Political Economy
771	CIR, (Commander's) Critical Information Requirements
772	CIR, Corotating Interaction Region
773	CIS- Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
774	CISA, (U.S.) C4I Integration Support Activity
775	CISB, Complete In Sealed Box (Internet auction/trading listings)
776	CISPR, Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
777	CISSP, Certified Information Systems Security Professional
778	CITS, Combat Identification Training System
779	CIV, Côte d'Ivoire (ISO 3166 trigram)
780	CIVETS, Colombia, Indonesia, Vietnam, Egypt, Turkey, South Africa (economics)
781	CIVPOP, Civilian Population
782	CIWS, Close-In Weapon System
783	CHRS,Canadian Heart Rhythm Society
784	CJ, Cayman Islands (FIPS 10-4 country code), Criminal Justice
785	CJC, Canadian Jewish Congress,Cold Junction Compensation
786	CJD, Chronological Julian Day,Creutzfeldt-Jakob Disease
787	CJCS, Chairman of the Joint Chiefs of Staff
788	CJO, Chief of Joint Operations
789	CJTF, Combined Joint Task Force
790	CK, Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
791	CKA, commonly known as, Canada Kicks Ass
792	CKND,Codename: Kids Next Door
793	Cl, Chlorine
794	CL, Chile (ISO 3166 digram), Co-ordination Line,One Hundred and Fifty (in Roman numerals)
795	CLA, Clutterers Anonymous
796	CLEC, Competitive Local Exchange Carrier
797	CLEMARS, California Law Enforcement Mutual Aid Radio System
798	CLI, Command Line Interface/Interpreter
799	CLIC, Compact LInear Collider
800	CLO, Cornell Lab of Ornithology
801	CLOB, Character Large OBject
802	CLOS, Command to Line-Of-Sight (missile control system)
803	CLOS, Common Lisp Object System
804	CLP, Chilean peso (ISO 4217 currency code), Common [Operating/Operational] Land Picture
805	CLPFC, CentroLateral PreFrontal Cortex
806	CLRP, College Loan Repayment Program
807	Cm, Curium
808	CM- Cameroon (FIPS 10-4 country code; ISO 3166 digram), Cruise Missile, Nine Hundred (in Roman numerals)
809	CMA- U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
810	CMB, Cosmic Microwave Background
811	CMBR, Cosmic Microwave Background Radiation
812	CME, Coronal Mass Ejection (usually Sun)
813	CMHC, Canada Mortgage and Housing Corporation
814	CMIIAW, Correct me if I am wrong
815	CMIS- Content Management Interoperability Services,Common management information service
816	CMJ, Christopher Martin-Jenkins (BBC sports commentator)
817	CML- Chemical, Chronic Myelogenous Leukemia (formerly Chronic Myeloid Leukemia)
818	CMM, Capability Maturity Model
819	CMMC, Corps Materiel Management Centre
820	CMML- Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
821	CMO, Civil-Military Operations
822	CMOC, Civil-Military Operations Centre
823	CMOS- Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
824	CMP, Common [Operating/Operational] Maritime Picture
825	CMP, Canadian Military Pattern truck (World War II)
826	CMPD, Chronic Myeloproliferative Disease
827	CMPD, Charlotte Mecklenburg Police Department
828	CMR- Cameroon (ISO 3166 trigram), Coaxial Main Rotors (helicopter type)
829	CMS- Centers for Medicare and Medicaid Services,The Chicago Manual of Style
830	CMT, Country Music Television
831	CMU- Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
832	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)
833	CMYK, Cyan Magenta Yellow Key/blacK (colour model)
834	CN-(i/s) Canadian National (railway; also the AAR reporting mark for said company), China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
835	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
836	CNBC,(a/i) Consumer News and Business Channel
837	CND- Campaign for Nuclear Disarmament,Computer Network Defence
838	CNE- Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
839	CNF, Cost and Freight
840	CNI, Communications, Navigation and Identification
841	CNI, Clinical Nursing Intern
842	CNN- Cable News Network,Cellular Nonlinear Network
843	CNO, Computer Network Operations
844	CNR- Canadian National Railway,Combat Net Radio
845	CNV, Copy-Number Variable (genetics)
846	CNY, Chinese yuan renminbi (ISO 4217 currency code)
847	co, Corsican language (ISO 639-1 code)
848	Co, Cobalt
849	CO,many, including Central Office (phone company); see entry, Colorado (postal symbol), Commanding Officer (military)
850	COA, Certificate/Concept Of Analysis,Course Of Action (military)
851	COB, Close Of Business [day]
852	COBRA,Consolidated Omnibus Budget Reconciliation Act of 1985
853	COCOM, Combatant Command (military)
854	COD, Cash On Delivery, Democratic Republic of the Congo (ISO 3166 trigram)
855	CoDA, Co-Dependents Anonymous
856	codec, Coder-Decoder / Compressor-Decompressor / Compression-Decompression algorithm
857	COE, Cab Over Engine (see truck),Common Operating Environment (military)
858	COEA, Cost Operational Effectiveness Analysis (military)
859	COEIA, Combined Operational Effectiveness and Investment Appraisal (military)
860	COFT, Conduct Of Fire Trainer (military)
861	COG, Centre Of Gravity,Current Operations Group (military), Republic of the Congo (ISO 3166 trigram)
862	COGENT, Cognitive Objects within a Graphical EnviroNmenT
863	COIL, Chemical Oxygen Iodine Laser
864	COIN, Counter-Insurgency (military)
865	COK, Cook Islands (ISO 3166 trigram)
866	COL, Colombia (ISO 3166 trigram)
867	COLA, comp.os.linux.announce,Cost Of Living Adjustment
868	COLT, Combat Observation and Lasing Team (military)
869	COM, Comoros (ISO 3166 trigram), Component Object Model
870	COMECON, Council for Mutual Economic Assistance (economic counterpart of the Warsaw Pact, 1949-1991)
871	COMMZ, Communications Zone (military)
872	COMSEC, Communications Security (military)
873	CONAD, U.S. Continental Air Defense Command
874	CONCACAF, Confederation Of North, Central American and Caribbean Association Football
875	CONOPS, Concept of Operations (military)
876	CONUS, Continental United States
877	COO, Chief Operating Officer
878	COP, Colombian peso (ISO 4217 currency code), Common Operating/Operational Picture
879	COPE, U.K. Committee On Publication Ethics
880	COPUS, U.K. Committee on the Public Understanding of Science
881	cor, Cornish language (ISO 639-2 code)
882	CORBA, Common Object Request Broker Architecture
883	CORD,(i/a) Common Operational Requirements Document
884	CORE, Consortium for Oceanographic Research and Education
885	CORG, (U.S.) Combat Operations Research Group
886	COROT, COnvection, ROtation and planetary Transits
887	cos, Corsican language (ISO 639-2 code),Cosine
888	COS, Cooper Ornithological Society
889	COSCOM, Corps Support Command (military)
890	COSER, COoperative SERvice
891	CoT, Car of Tomorrow (former NASCAR race car design)
892	COTS, Commercial Off The Shelf
893	Coy, Company (military unit)Cow
894	CP, Canadian Pacific,Check Point,Command Post,Club Penguin
895	CPA, Certified Public Accountant
896	CPCU,Certified Property Casualty Underwriter
897	CPD, Capabilities Production Document
898	CPE, Certificate of Proficiency in English
899	CPE, Certified Professional Ergonomist
900	CPF, Calibration Parameter File,Canadian Patrol Frigate
901	CPG, Clinical Practice Guideline
902	CPI, CERDEC Command, Power and Integration
903	CPIM, Certification on Production and Inventory Management
904	CPIR,Computationally-Private Information Retrieval
905	CPON, Certified Pediatric Oncology Nurse
906	CPPCC, Chinese People's Political Consultative Conference
907	CPR, Canadian Pacific Railway
908	CPR, Cardiopulmonary resuscitation
909	CPSM, Continuous Phase Shift Modulation
910	CPSU, Communist Party of the Soviet Union
911	CPT, Contingency Planning Team
912	CPU, Central Processing Unit,Contract Postal Unit
913	CPV, Cape Verde (ISO 3166 trigram)
914	CPX, Command Post eXercise
915	CQ, Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
916	cr, Cree language (ISO 639-1 code)
917	Cr, Chromium
918	CR- Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
919	CRAM, Combined Radiometric Correction Model
920	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)
921	CRD, Capstone Requirements Document
922	cre, Cree language (ISO 639-2 code)
923	CREB, Cyclic AMP-response Element Binding (protein)
924	CREEP, Committee for the Re-Election of the President, a pejorative nickname used by opponents
925	CRI- China Radio International, Costa Rica (ISO 3166 trigram)
926	CRIPL, Consolidated Remain-In-Place List
927	CRM, Cardiac Rhythm Management,Customer Relationship Management
928	CRO, Croatia (IOC and FIFA trigram, but not ISO 3166)
929	CRP- Committee for the Re-Election of the President,Control and Reporting Post
930	CRT- Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
931	CRTC, Canadian Radio-television and Telecommunications Commission
932	cs, Czech language (ISO 639-1 code)
933	Cs, Caesium
934	CS- Combat Support,Computer Scientist, Costa Rica (FIPS 10-4 country code),Serbia and Montenegro (ISO 3166 digram; obsolete since 2006)
935	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
936	CSC- Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
937	CSERIAC, (U.S. DoD) Crew Systems Ergonomics Information Analysis Center
938	CSG, Corps Support Group
939	CSI,see entry
940	CSICOP, Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
941	CSIP, Commercial Stable Image Platform (AMD)
942	CSK, Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
943	CSL, U.K. Central Science Laboratory
944	CSPI, Center for Science in the Public Interest
945	CSR, Control Supply Rate
946	CSR, Corporate Social Responsibility [1]
947	CSRC, Conflict Studies Research Centre
948	CSRF, Cross-Site Request Forgery
949	CSS- Cascading Style Sheets,Catalina Sky Survey,Central Security Service,Combat Service Support,Confederate States Ship,Content-scrambling system,Cross-site scripting
950	CSSCS, Combat Service Support Control System
951	CST, Central Standard Time (UTC−6 hours)
952	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)
953	CTBT, Comprehensive [Nuclear] Test Ban Treaty
954	CTC, Closed Timelike Curve (relativity),(U.S.) Combat Training Center
955	CTDB, Compact Terrain Data Base (file format)
956	CTE- Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984), Chronic traumatic encephalopathy
957	CTGF, connective tissue growth factor
958	CTI, Co-operative Target Identification
959	CTIL, Critical Tracked Items List
960	CTIS, Central Tire Inflation System
961	CTMS, Clinical Trial Management System
962	CTO, Chief Technical Officer,Chief Technology Officer
963	CTS, Clear-To-Send,Collective Training Standards,Communications Technology Service,Contract Technical Services,Conversation Time Sharing,COSMIC Top Secret
964	CTSS, Compatible Time-Sharing System
965	CTU, Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
966	CTVT, Canine Transmissible Venereal Tumour
967	cu, Old Church Slavonic language (ISO 639-1 code)
968	Cu, Copper (Latin Cuprum)
969	CU, Carrie Underwood,Cuba (FIPS 10-4 country code; ISO 3166 digram)
970	CUB, Cuba (ISO 3166 trigram)
971	CUCV, Commercial Utility Cargo Vehicle
972	CUP, Cuban peso (ISO 4217 currency code)
973	CUPS, Common Unix Printing System
974	CUPW, Canadian Union of Postal Workers
975	CUREA, Consortium for Undergraduate Research and Education in Astronomy
976	CuW, Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
977	CUW, Curaçao (ISO 3166 trigram)
978	cv, Chuvash language (ISO 639-1 code)
979	CV,many, including curriculum vitae (résumé); see entry
980	CVCC- Combat Vehicle Command and Control,Compound Vortex Controlled Combustion (1970s Honda automobile engine technology)
981	CVE, Cape Verde escudo (ISO 4217 currency code)
982	CVI, Combat Vehicle Identification
983	CVLL, Crypto Variable Logic Label
984	CVR, Cockpit Voice Recorder,Combat Vehicle Reconnaissance
985	CVS, Concurrent Versions System
986	CVSD, Continuous Variable Slope Delta (modulation)
987	CVT, Continuously Variable Transmission
988	CW, Continuous Wave,Clothes Washer, Cook Islands (FIPS 10-4 territory code)
989	CWC, Chemical Weapons Convention
990	CWS, Canadian Wildlife Service
991	CWRU, Case Western Reserve University
992	CX, Christmas Island (ISO 3166 digram),One Hundred and Ten (in Roman numerals)
993	CXR, Christmas Island (ISO 3166 trigram)
994	cy, Welsh language (ISO 639-1 code)
995	CY, Calendar year, Cyprus (ISO 3166 and FIPS 10-4 country code digram)
996	cym, Welsh language (ISO 639-2 code)
997	CYM, Cayman Islands (ISO 3166 trigram)
998	CYP, Cyprus (ISO 3166 trigram),Cyprus pound (ISO 4217 currency code)
999	CZ, Combat Zone, Czech Republic (ISO 3166 and FIPS 10-4 country code digram)
1000	CZE, Czech Republic (ISO 3166 trigram)
1001	CZK, Czech koruna (ISO 4217 currency code)
1002	CZF, (Christian Zombie Fan)
1003	CZMA, (US) Coastal Zone Management Act
1004	d, Deci
1005	D, Deuterium
1006	da, Danish language (ISO 639-1 code),deca
1007	DA, Denmark (FIPS 10-4 country code), Debtors Anonymous, U.S. Department of the Army,District Attorney
1008	DAB,Digital Audio Broadcasting
1009	DACT, Data Automated Communications Terminal,Dissimilar Air Combat Training
1010	DAES, Defence Acquisition Executive Summary,(UK MoD) Directorate of Analysis, Experimentation and Simulation
1011	DAF, Dissolved Air Flotation, a technique used in water treatment
1012	DAFIF, Digital Aeronautical Flight Information File
1013	DAK, Disney's Animal Kingdom
1014	dan, Danish language (ISO 639-2 code)
1015	DAO, Division Ammunition Officer
1016	DAQ, Data acquisition, Delivered Audio Quality
1017	DARE, Drug Abuse Resistance Education
1018	DARO,(i/a) (U.S.) Defense Airborne Reconnaissance Office
1019	DARPA, U.S. Defense Advanced Research Projects Agency
1020	DART, Disaster Assistance Response Team,Dublin Area Rapid Transit
1021	DAS, Defensive Aids Suite
1022	DASD, (U.S.) Deputy Assistant Secretary of Defense
1023	DASL, Datapoint's Advanced Systems Language
1024	DAU, (U.S.) Defense Acquisition University
1025	DAWN, (U.S.) Drug Abuse Warning Network
1026	dB, Decibel
1027	Db, Dubnium
1028	DB, Database,Deutsche Bahn
1029	DBA, De Bellis Antiquitatis (miniature wargaming rules)
1030	DBBL, (U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
1031	DBCS, Double Byte Character Set
1032	DBDO, Desert BDO
1033	DBE, Dame Commander of the Order of the British Empire
1034	DBF, Detection By Fire (weapon launch signature)
1035	DBM, De Bellis Multitudinis (miniature wargaming rules),Detection By Movement (military target)
1036	DBR, De Bellis Renationis (miniature wargaming rules)
1037	DBRA, Davis-Bacon Related Acts
1038	DBS, Direct Broadcast Services (television)
1039	DC, da capo,Italian Democrazia Cristiana,Digital Compass,Direct Current, District of Columbia (postal symbol), Douglas Aircraft Company,Dublin Core,Duty Cycle
1040	DCA, Defensive Counter Air,Drum Corps Associates, DiChloroAcetate, Ronald Reagan Washington National Airport (IATA code)
1041	DCAA, (U.S.) Defense Contract Audit Agency
1042	DCAS, Devon and Cornwall Archery Society
1043	DCC, Dallas Christian College
1044	DCC, Digital Command Control (model railroading),Direct Client-to-Client (Internet Relay Chat),Dismounted Close Combat
1045	DCCP, Datagram Congestion Control Protocol
1046	DCD, [Organ] Donation after Cardiac Death
1047	DCE, Data Communication Equipment
1048	DCFC, Death Cab for Cutie
1049	DCI, Detection, Classification and Identification,Drum Corps International,Duellists' Convocation International, now known simply by the initials
1050	DCIM, Digital Camera Images
1051	DCIMS, Dental Classification Information Management System,Dismounted Combat Identification Marking System
1052	DCL,Disney Cruise Line
1053	DCN,Deacon
1054	DCOM,Disney Channel Original Movie
1055	DCOP, Desktop Communication Protocol
1056	DCSOPS, Deputy Chief of Staff for Operations and plans
1057	DCW, Digital Chart of the World
1058	DCYSC, Discovery Channel Young Scientist Challenge
1059	DD,many, including due diligence and dear daughter (increasingly prevalent on social mailing lists, blogs, and bulletin boards); see entry
1060	DDA- Digital Differential Analyzer (graphics algorithm),Digital Differential Analyzer,Deputy District Attorney
1061	DDD- Data Display Debugger,Digital Digital Digital (CD mastering)
1062	DDL, Digital Data Link
1063	DDN, U.S. Defense Data Network
1064	DDoS, Distributed Denial of Service
1065	DDS, Doctor of Dental Surgery
1066	DDT- Dichloro-Diphenyl-Trichloroethane (insecticide),Dynamic Debugging Tool (computing),DE[edit]
1067	de, German language (ISO 639-1 code)
1068	DE, Delaware (postal symbol),Germany (ISO 3166 digram)
1069	DEA, Drug Enforcement Administration
1070	DEA, Drug Enforcement Agency
1071	DEC,(a/i) Department of Environmental Conservation,Digital Equipment Corporation,Disasters Emergency Committee
1072	DeCA, (U.S.) Defense Commissary Agency
1073	DECSIM, Model DEComposition and SIMulation algorithm,Directed Energy Combat SIMulation
1074	DECT, Digital European Cordless Telephone
1075	DEFCON, Defence readiness condition
1076	DEFRA, (UK) Department for Environment, Food and Rural Affairs
1077	DELT, Dual Ended Line Test (ing)
1078	DEM, Data Exchange Mechanism,Digital Elevation Model
1079	DEN, Denmark (IOC and FIFA trigram, but not ISO 3166)
1080	DEPSECDEF, (U.S.) Deputy Secretary of Defense
1081	DERA, British Defence Evaluation and Research Agency (1995-2001)
1082	DES, Deep Ecliptic Survey
1083	deu, German language (ISO 639-2 code)
1084	DEU, Germany (ISO 3166 trigram)
1085	DFAS, (U.S.) Defense Finance and Accounting Service
1086	DFCB, Data Format Control Book
1087	DfID, UK Department for International Development
1088	DFM, Dynamic Flowgraph Methodology
1089	DFM,(ii) Discrete Field Model see Superluminal motion
1090	DFSP, Dermatofibrosarcoma protuberans
1091	DfT, UK Department for Transport
1092	DFTBA, Don't Forget To Be Awesome- a term commonly used by the Vlogbrothers
1093	DGPS, Differential GPS
1094	DGZ, Desired Ground Zero
1095	DH, dear husband (increasingly prevalent on social mailing lists, blogs, and bulletin boards),Designated hitter
1096	DHA, DocosaHexaenoic Acid
1097	DHHS, (U.S.) Department of Health and Human Services
1098	DHL, Dalsey, Hillblom, and Lynn (courier service)
1099	DHRA, (U.S.) DoD Human Resources Activity
1100	DHS, U.S. Department of Homeland Security
1101	DHSS, UK Department of Health and Social Security
1102	DHTFYSS, U.S. Don't Have Time For You Silly S****
1103	DHY, Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
1104	DIA, U.S. Defense Intelligence Agency
1105	DIAC, Department of Immigration and Citizenship (Australia) [1]
1106	DiC,Design Island Centre (computing usually used in a teaching situation)
1107	DICASS, DIrectional Command Activated Sonobuoy System
1108	DILLIGAD, Do I Look Like I Give A Damn? (military shorthand, slightly less offensive than the following)
1109	DILLIGAF, Do I Look Like I Give A Fuck? (military shorthand)
1110	DIF, Data Interchange Format
1111	DIFAR, DIrectional Frequency Analysis and Recording
1112	DIME, Dense Inert Metal Explosive
1113	DIMM, Dual In-line Memory Module (computing)
1114	DINKY, Double Income, No Kids Yet
1115	DIP, Dual In-line Package (electronics)
1116	DIPS, Defense independent pitching statistics
1117	DIR, Defence Industrial Research
1118	DIS- Defence Intelligence Staff,(U.S.) Defense Investigative Service,Distributed Interactive Simulation,Draft International Standard (ISO)
1119	DISA- U.S. Defense Information Systems Agency,Distinguished Individual Service Award
1120	DISCOM, Division Support Command
1121	DISE, Deployable Intelligence Support Element
1122	DISSTAF, DIS Search and Target Acquisition Fidelity experiment
1123	DITY,(i/a) Do-It-Yourself
1124	div, Dhivehi language (ISO 639-2 code)
1125	DIVAD, Division Air Defence
1126	DIY, Do It Yourself
1127	DJ, Disc Jockey,Dinner Jacket, Djibouti (ISO 3166 digram; FIPS 10-4 country code)
1128	DJD, Degenerative Joint Disease,Dublin Julian Day,Discoveries in the Judaean Desert
1129	DJF, Djibouti franc (ISO 4217 currency code)
1130	DJI, Djibouti (ISO 3166 trigram)
1131	DJS, Director, Joint Staff
1132	DK, Denmark (ISO 3166 digram)
1133	DKK, Danish krone (ISO 4217 currency code)
1134	DL,Dexter's Laboratory
1135	DLA, U.S. Defense Logistics Agency, Dental Laboratories Association
1136	DLIC, Detachment Left-In-Contact
1137	DLIR, Depot-Level Inspection and Repair
1138	DLL, Dynamic Link Library
1139	DLPMC, DorsoLateral PreMotor Cortex
1140	DLR, Deutsches Zentrum für Luft- und Raumfahrt (German, German Aerospace Centre),Docklands Light Railway
1141	DLRP, Data Link Reference Point
1142	DLS, Deep Lens Survey
1143	DLSA, (U.S.) Defense Legal Services Agency
1144	DLSc, Diploma in Library Science
1145	DLSC, U.S. Defense Logistics Services Center,U.S. Defense Logistics Support Command,Department of Library Special Collections (Western Kentucky University Libraries),Direct Loan Servicing Center,Directorate of Land Strategic Concepts (Canada),Dominican Lay Scholars Community
1146	DLTBGYD,Don't let the bastards grind you down
1147	DM- Dominica (ISO 3166 digram), Dungeon Master (role-playing games)
1148	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)
1149	DMC, (U.S.) Defense Management Council
1150	DMCA,Digital Millennium Copyright Act
1151	DMI, Desktop Management Interface (computing)
1152	DMM,Digital Multimeter
1153	DMOC, Distributed Mission Operations Centre
1154	DMPA, (U.S.) Defense Medical Programs Activity
1155	DMPFC, DorsoMedial PreFrontal Cortex
1156	DMPK, Drug Metabolism and Pharmacokinetics
1157	DMRB, Design Manual for Roads and Bridges
1158	DMS, U.S. Defense Message System
1159	DMSP, U.S. Defense Meteorological Satellite Program
1160	DMT, Dimethyltryptamine
1161	DMU, Diesel Multiple Unit, a method of connecting self-propelled railway vehicles together to form a train under the control of one driver.
1162	DMV, Department of Motor Vehicles
1163	DMZ, DeMilitarized Zone
1164	DN, Deacon
1165	DNA, U.S. Defense Nuclear Agency,DeoxyriboNucleic Acid,Douglas Noël Adams
1166	DNAW, Day Night All Weather
1167	DND, Department of National Defence (Canada),Do Not Disturb
1168	DNDi, Drugs for Neglected Diseases initiative
1169	DNDO, U.S. Domestic Nuclear Detection Office
1170	DNM, Defence Nuclear Material
1171	DNK, Denmark (ISO 3166 trigram)
1172	DNR, Do Not Resuscitate
1173	DNS, Domain Name System
1174	DO, Dominica (FIPS 10-4 country code),Dominican Republic (ISO 3166 digram), Doctor of Osteopathic Medicine
1175	DOA, Dead On Arrival,Dead or Alive
1176	DOB, Date Of Birth
1177	DOD, U.S. Department of Defense
1178	DODAF, U.S. Department of Defense Architectural Framework
1179	DoDD, U.S. Department of Defense Directive
1180	DoDEA, (U.S.) Department of Defense Education Activity
1181	DOE,(i/a) U.S. Department of Energy
1182	DOHC, Dual-OverHead-Cam engine
1183	DOI, Digital Object Identifier,U.S. Department of the Interior
1184	DOMS, (U.S.) Director of Military Support
1185	DOP, Dominican peso (ISO 4217 currency code)
1186	DORA, Defence of the Realm Act
1187	DOS, Denial of Service (DoS, cf. DDoS),Density of State,Disk Operating System
1188	DOT, Department of Transportation (U.S. federal or state),Damage Over Time (common in World of Warcraft)
1189	DOTA,short-form for DEFENSE OF THE ANCIENTS a popular online epic game
1190	DotD, Deal of the Day (marketing gimmick)
1191	DOTMLPF, Doctrine, Organization, Training, Materiel, Leadership, Personnel, and Facilities (mnemonic)
1192	DOW, Died of Wounds
1193	DP, Division de production (Algerian petroleum company)
1194	DP, Decision Point,Dynamic Programming
1195	DPA, UK Defence Procurement Agency
1196	DPCO, Double-Pole Change Over
1197	DPDT, Double-Pole Double-Throw
1198	DPICM, Dual-Purpose Improved Conventional Munition
1199	DPKO, UN Department for Peacekeeping Operations
1200	DPMO, (U.S.) Defense Prisoner of War/Missing Personnel Office
1201	DPPDB, Digital Point Positioning Database
1202	DPRE, Displaced Person or Refugee (plural Displaced Persons and Refugees) (originally Displaced Persons, Refugees, Evacuees)
1203	DPRK, Democratic People's Republic of Korea
1204	DPST, Double-Pole Single-Throw
1205	DQ, Dairy Queen, Jarvis Island (FIPS 10-4 country code)
1206	DR, Dead Reckoning, Dominican Republic (FIPS 10-4 country code), Danmarks Radio (Danish Broadcasting Corporation)
1207	DRA, Defence Research Agency (UK, 1991-1995),Democratic Republic of America
1208	DRC, Democratic Republic of the Congo
1209	DRDC, Defence Research & Development Canada
1210	DREA,(i/a) Defence Research Establishment Atlantic (obsolete 2002)
1211	DRES,(i/a) Defence Research Establishment Suffield (obsolete 2002)
1212	DRET,(i/a) Defence Research Establishment Toronto (obsolete 2002)
1213	DREV,(i/a) Defence Research Establishment Valcartier (obsolete 2002)
1214	DRI, Detection, Recognition, Identification,Dietary Reference Intake
1215	DRIC,(i/a) (U.S.) Defense Research Information Center
1216	DRL, Daytime Running Lights,Dorman Roberts Ltd.
1217	DRM, Digital Rights Management
1218	DRMS, (U.S.) Defense Revitalization and Marketing Service
1219	DRPR, Drawing Practices
1220	DRT, Document Related Technologies
1221	Ds, Darmstadtium
1222	DS- Dear son (increasingly prevalent on social mailing lists, blogs, and bulletin boards),Defence Scientist,Direct Support, Dust Storm (METAR Code)
1223	DSA- (U.S.) Defense Support Activities,Division Support Area
1224	DSAA- (U.S.) Defense Security Assistance Agency,Driving Schools Association of the Americas,DECT Standard Authentication Algorithm
1225	DSAS, Disney Sing Along Songs
1226	DSB, (U.S.) Defense Science Board
1227	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
1228	DSCS, U.S. Defense Satellite Communications System
1229	DSCSOC, DSCS Operations Center
1230	DSD, Defence Studies Department (King's College, London)
1231	DSE, Dry Sheep Equivalent
1232	DSG,Direct-Shift Gearbox
1233	DSID, Dismounted Soldier Identification System
1234	DSL, Digital Subscriber Line
1235	DSLR, Digital single-lens reflex (camera)
1236	DSM, Diagnostic and Statistical Manual of Mental Disorders
1237	DSN, Deep Space Network
1238	DSO, Distinguished Service Order (British military decoration)
1239	DSP- Defense Standardization Program,Defense Support Program,Digital Signal Processing
1240	DSPL, Design Specialists and Plans Language
1241	DSR, Deformed Special Relativity
1242	DSRV- Deaf Sports Recreation Victoria,Deep Submergence Rescue Vehicle
1243	DSS- Digitized Sky Survey,Discarding-Sabot Shell (ammunition)
1244	DST, Daylight saving time
1245	DSTL, British Defence Science and Technology Laboratory
1246	DSWA, (U.S.) Defense Special Weapons Agency
1247	DTA, Dental Technologists Association
1248	DTD, Digital Terrain Data
1249	DTE, Data Terminal Equipment,Down To Earth
1250	DTG, Date-Time Group
1251	DTH, Direct To Home (television)
1252	DTI, UK Department of Trade and Industry
1253	DTIC, (U.S.) Defense Technical Information Center
1254	DTL, Diode-Transistor Logic (electronics)
1255	DTMF, Dual-tone multi-frequency signaling
1256	DTLOMS, Doctrine, Training, Leader development, Organization, Materiel, and Soldier (mnemonic)
1257	DTO, Disruptive Technology Office (was ARDA)
1258	DTOMLS, Doctrine, Training, Organization, Materiel, Leader and Soldier development (mnemonic)
1259	DTR, Determine The Relationship
1260	DTSA, (U.S.) Defense Technology Security Administration
1261	DU- Depleted Uranium, Dust (METAR Code)
1262	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
1263	DUMBO, Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1264	DUSD, (U.S.) Deputy Under-Secretary of Defense
1265	dv, Dhivehi language (ISO 639-1 code)
1266	DVD, Digital Versatile Disk (was Digital Video Disk)
1267	DVLC, UK Driver and Vehicle Licencing Centre
1268	DVM, Doctor of Veterinary Medicine
1269	DVO, Direct View Optics
1270	DVOM,Digital Volt-Ohm Meter
1271	DVP,various meanings (disambiguation page)
1272	DW, Drum Workshop
1273	DWG, Divisional Wargame (military simulation)
1274	DWI, Dance With Intensity,Danish West Indies,Diffusion-weighted imaging,Direct water injection,Disaster Welfare Inquiry,Drinking Water Inspectorate,Driving While Intoxicated/Impaired
1275	DWM, Doctor Who Magazine
1276	DWIM, Do What I Mean
1277	DWTS, Dancing with the Stars
1278	DWW, Down with Webster
1279	DX- Dexterity (role-playing games), DeXtrorphan,Distant (radio), D-Generation X (professional wrestling stable)
1280	DXA, Dual-energy X-ray Absorptiometry
1281	DXM, DeXtroMethorphan
1282	Dy, Dysprosium
1283	DY, Dahomey (ISO 3166 digram; obsolete since 1977)
1284	dz, Dzongkha language (ISO 639-1 code)
1285	DZ, Algeria (ISO 3166 digram),Drizzle (METAR Code), Drop Zone
1286	DZA, Algeria (ISO 3166 trigram)
1287	DZD, Algerian dinar (ISO 4217 currency code)
1288	dzo, Dzongkha language (ISO 639-2 code)
1289	E, East
1290	EA, Electronic Attack,Emotions Anonymous,Engagement Area,Electronic Arts,Enrolled Agent,Environmental Assessment,Enterprise Architect, Exaampere
1291	EABU, Explain Acronyms Before Use
1292	EAC, Echelons Above Corps
1293	EAPC, Euro-Atlantic Partnership Council
1294	EASA, European Aviation Safety Agency
1295	EAST, Experimental Advanced Superconducting Tokamak
1296	EBD, Electronic Brake Distribution
1297	EBE, Extraterrestrial Biological Entity
1298	EBO,(i/a) Effects Based Operations,Encyclopædia Britannica Online,European Board of Ophthalmology
1299	EBSA, Employee Benefits Security Administration
1300	EBW, Electron Beam Welding
1301	EBW, Exploding BridgeWire
1302	EC- Ecuador (ISO 3166 digram; FIPS 10-4 country code), Electronic Combat,European Community (see EEC), Exacoulomb
1303	ECB- England (and Wales) Cricket Board,European Central Bank
1304	ECBR, European Coalition for Biomedical Research
1305	ECASS, European Centre for Analysis in the Social Sciences [1]
1306	ECCM, Electronic Counter-Counter-Measures
1307	ECFS, Electronic Case Filing System
1308	ECG, Electrocardiogram
1309	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
1310	ECHR, European Convention on Human Rights
1311	ECJ, European Court of Justice
1312	ECL, Emitter Coupled Logic (electronics)
1313	ECM- Electronic Counter-Measures,Enterprise Content Management
1314	ECommHR, European Commission on Human Rights
1315	ECS- Emergency Contact System,Enhanced Chip Set (computing),EOSDIS Core System,Extended Chip Set (computing)
1316	ECSC, European Coal and Steel Community (distant ancestor of the EU)
1317	ECT, ElectroConvulsive Therapy
1318	ECtHR, European Court of Human Rights
1319	ECU- Ecuador (ISO 3166 trigram), European Currency Unit (ancestor of the euro)
1320	ECW- Eastern Championship Wrestling/Extreme Championship Wrestling,ED[edit]
1321	EDA, European Defence Agency
1322	EDAC, Error Detection And Correction
1323	EDCS, Environmental Data Coding Specification
1324	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)
1325	EDECSIM, Extended Directed Energy Combat Simulation
1326	EDGAR, Electronic Data Gathering, Analysis, and Retrieval (U.S. Securities and Exchange Commission filings database)
1327	EDH, Eastman Dental Hospital
1328	EDS- Electronic Data Systems,Electronic Differential System
1329	EDSA, Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1330	EDT, Eastern Daylight Saving Time (UTC−4 hours)
1331	EDTA- Electric Drive Transportation Association, EthyleneDiamineTetraAcetic acid,EE[edit]
1332	ee, Ewe language (ISO 639-1 code)
1333	EE- Estonia (ISO 3166 digram; from the country's native name of Eesti), Electrical engineering,Electrical Engineer,E&E, Escape and Evasion (training)
1334	EEC, European Economic Community (predecessor of the EU)
1335	EEG, ElectroEncephaloGram
1336	EEK, Estonian kroon (ISO 4217 currency code)
1337	EENT, End Evening Nautical Twilight
1338	EEO, Equal Employment Opportunity
1339	EEOC, (U.S.) Equal Employment Opportunity Commission
1340	EEZ, Economic Exclusion Zone or Exclusive Economic Zone
1341	EF- Electro-focus (Canon lens mount),Entry Foyer, Exafarad
1342	EFF, Electronic Frontier Foundation
1343	EFL,English as a Foreign Language
1344	EFM, Enterprise Feedback Management
1345	EFOA, European Fuel Oxygenates Association
1346	EFSA, European Food Safety Authority
1347	EFT, Electronic Fund Transfer
1348	EFTA- European Free Trade Area, European Free Trade Association
1349	EFV, Expeditionary Fighting Vehicle
1350	EG, Egypt (ISO 3166 digram; FIPS 10-4 country code)
1351	EGBUS, External Genitalia, Bartholin's glands, Urethra & Skene's glands
1352	EGCG, EpiGalloCatechin-3-Gallate
1353	EGIS, Erieye Ground Interface Segment
1354	EGP, Egyptian pound (ISO 4217 currency code)
1355	EGRET, Energetic Gamma-Ray Experiment Telescope
1356	EGY, Egypt (ISO 3166 trigram)
1357	EH, Exahenry,Western Sahara (ISO 3166 digram)
1358	EHA- Education for All Handicapped Children Act (U.S. federal legislation; since superseded by the Individuals with Disabilities Education Act), Emotional Health Anonymous
1359	EHF, Extremely High Frequency
1360	EHR, Equipment History Record
1361	Ei, Exbi
1362	EI, Ireland (FIPS 10-4 country code; from Éire)
1363	EIA, Environmental Impact Assessment
1364	EIAH,Environnements Informatiques pour l'Apprentissage Humain
1365	EIAH,Encyclopedia of Iranian Architectural History
1366	EIC,East India Company
1367	EICS,East India Company's Service
1368	eID,electronic ID
1369	EIRP, Effective Isotropic Radiated Power
1370	EIS, Environmental Impact Statement
1371	EJ, Exajoule
1372	EK, Equatorial Guinea (FIPS 10-4 country code),Exakelvin
1373	EKG, Electrocardiogram (from German Elektrokardiogramm)
1374	EKMS, Electronic Key Management System
1375	el, Greek language (ISO 639-1 code)
1376	EL, Exalitre
1377	ELF-(a/i) Earth Liberation Front,Endangered Language Fund,Eritrean Liberation Front,Executable and Linkable Format,Extremely Low Frequency
1378	ELINT, Electronic Intelligence
1379	ell, Greek language (ISO 639-2 code)
1380	ELL, English Language Learner
1381	ELM, Edge-Localised Mode (plasma physics)
1382	ELO, Electric Light Orchestra
1383	ELP- Emerson, Lake & Palmer,European Left Party
1384	ELSS, Emergency Life Support Stores
1385	ELT, Emergency Locator Transmitter
1386	Em, Exametre
1387	EM, ElectroMagnetism/ElectroMagnetic
1388	EMA,(i/a) European Medicines Agency
1389	EMC- Electric Membership Corporation,Electromagnetic Compatibility,Electro-Motive Corporation,European Muon Collaboration,Evergreen Marine Corporation
1390	EMCON, (Electromagnetic) Emissions Control
1391	EMD- General Motors Electro-Motive Division,Engineering and Manufacturing Development,European Missile Defence
1392	EMDG, Euro-Missile Dynamics Group
1393	EMDR, Eye Movement Desensitisation and Reprocessing
1394	EMEA, Europe, Middle East and Africa
1395	EMF- Electromotive force,Epsom Mad Funkers (1990s-2000s indie dance band)
1396	EMG, ElectroMyoGraph
1397	EMO, Emergency Measures Organisation- Emotional
1398	EMP, ElectroMagnetic Pulse
1399	EMS, Emergency Medical Services
1400	EMT, Emergency Medical Technician
1401	EMU, Electric Multiple Unit,a method of connecting self-propelled railway vehicles together to form a train under the control of one driver.
1402	en, English language (ISO 639-1 code)
1403	EN- Corps of Engineers, Estonia (FIPS 10-4 country code),Exanewton
1404	ENCODE, Encyclopedia of DNA Elements (human genome data project)
1405	ENE, East North-East
1406	eng, English language (ISO 639-2 code)
1407	ENG, England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1408	ENT, Ear, Nose and Throat
1409	ENTEC, Euro NATO Training Engineer Centre
1410	ENVL, Envelope
1411	ENY, Enemy
1412	eo, Esperanto language (ISO 639-1 code)
1413	EO- Electro-Optics,Engagement Operations
1414	EOD, Explosive Ordnance Disposal
1415	EOG, ElectroOculoGraphy
1416	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
1417	EOSAT, Earth Observation Satellite
1418	EOSDIS,(a/i) Earth Observation Satellite Data and Information System
1419	EOTS- Electro-Optical Tactical Sensor,(a/i) Eye Of The Storm (World of Warcraft)
1420	EOM, End of Message
1421	EP, European Parliament
1422	EP, Extended play
1423	EPA- EicosaPentaenoic Acid, Environmental Protection Agency
1424	EPCOT, Experimental Prototype Community Of Tomorrow
1425	EPCR- Endothelial protein C receptor,European Professional Club Rugby
1426	EPGS, EOS Polar Ground Sites
1427	EPIRB,(a/i) Emergency Position Indicating Radio Beacon
1428	EPL, English Premier League
1429	epo, Esperanto language (ISO 639-2 code)
1430	EPOS, Electronic Point Of Sale
1431	EPPA, Employee Polygraph Protection Act
1432	EPR, European Pressurised [Nuclear] Reactor
1433	EPW- Earth Penetrator Weapon/Warhead,Economic and Political Weekly (Indian publication),Enemy Prisoner of War,EQ[edit]
1434	EQ, Emotional Quotient
1435	EQG, Equatorial Guinea (FIFA trigram, but not IOC or ISO 3166)
1436	Er, Erbium
1437	ER- Emergency Room, Eritrea (ISO 3166 digram; FIPS 10-4 country code)
1438	ERA- Earned run average,Engineering Research Associates,Equal Rights Amendment,English Racing Automobiles,European Railway Agency
1439	ERCIM,(a/i) European Research Consortium for Informatics and Mathematics
1440	ERI, Eritrea (ISO 3166 trigram)
1441	ERLAWS, Eastern Ruapehu Lahar Alarm and Warning System
1442	ERN, Eritrean nakfa (ISO 4217 currency code)
1443	EROS, Earth Resources Observation System
1444	ERP, Engineer Regulating Point
1445	ERR, Eesti Rahvusringhääling
1446	ERS, Earth Resources Survey
1447	ERTS, Earth Resources Technology Satellite (became Landsat)
1448	ERV, Endogenous RetroVirus
1449	es, Spanish language (ISO 639-1 code)
1450	Es- Einsteinium,Exasecond
1451	ES- El Salvador (FIPS 10-4 country code), Electronic warfare Support, Exasiemens,Spain (ISO 3166 digram; from the country's native name of España)
1452	ESA- Electro-Spark Alloying,Endangered Species Act,European Space Agency
1453	ESC- Embryonic Stem Cell,Electronic Stability Control
1454	ESD, ElectroStatic Discharge
1455	ESDP, European Security and Defence Policy
1456	ESE, East South-East
1457	ESH, Western Sahara (ISO 3166 trigram)
1458	ESL, English as a Second Language
1459	ESM, Electronic warfare Support Measures
1460	ESO, European Southern Observatory
1461	ESOL, English for Speakers of Other Languages
1462	ESP- Electronic Stability Program,Extra-sensory perception, Spain (ISO 3166 trigram)
1463	ESPGHAN,European Society for Paediatric Gastroenterology, Hepatology and Nutrition
1464	ESPN, Entertainment and Sports Programming Network
1465	est, Estonian language (ISO 639-2 code)
1466	EST- Eastern Standard Time (UTC−5 hours), Estonia (ISO 3166 trigram)
1467	ESU, Emergency Services Unit
1468	ESV, Engineer Support Vehicle
1469	et, Estonian language (ISO 639-1 code)
1470	ET- Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1471	Exatesla- Extra Terrestrial
1472	ETB, Ethiopian Birr (ISO 4217 currency code)
1473	ETF, Emergency Task Force (a special police unit, also jocularly said to stand for Extra-Thick Fuzz)
1474	ETH, Ethiopia (ISO 3166 trigram)
1475	ETI, Extra-Terrestrial Intelligence
1476	ETLA, Extended TLA
1477	ETM- Electronic Technical Manual,Enhanced Thematic Mapper
1478	ETOPS, Extended-range Twin-engine Operational Performance Standards (aviation)
1479	ETT, Embedded Training Team
1480	eu, Basque language (ISO 639-1 code)
1481	Eu, Europium
1482	EU- Europa Island (FIPS 10-4 country code), European Union
1483	EUCOM, (U.S.) European Command
1484	EUR, euro (ISO 4217 currency code)
1485	eus, Basque language (ISO 639-2 code)
1486	EUUSA, European Union and United States of America
1487	EV, Exavolt
1488	EVA- Earned Value Analysis,Economic value added,Ethylene-Vinyl Acetate,Extra-Vehicular Activity
1489	EVIL, Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1490	EW, Electronic Warfare, Exawatt
1491	ewe, Ewe language (ISO 639-2 code)
1492	EWR, Newark Liberty International Airport (IATA airport code)
1493	EWTN, Eternal Word Television Network
1494	EXFOR, Experimental Force (military)
1495	EXREP, Expeditious Repair (SM&R code)
1496	EZ, Czech Republic (FIPS 10-4 country code), Extraction Zone
1497	f, Femto
1498	F, Farad,Fluorine
1499	fa, Persian language (ISO 639-1 code)
1500	FA,Food Addicts in Recovery Anonymous
1501	fA, Femtoampere
1502	FA, Field Artillery,Financial Aid,Football Association (England)
1503	FAA, U.S. Federal Aviation Administration,Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1504	FAAD, Forward Area Air Defence
1505	FAADEZ, Forward Area Air Defence Engagement Zone
1506	FAAN, Fellow of the American Academy of Neurology
1507	FAAFP,Fellow of the American Academy of Family Physicians
1508	FAAN, Fellow of the American Academy of Nursing
1509	FAAQ,(a/i) Frequently Asked and Anticipated Questions (cf. FAQ)
1510	FAASV, Field Artillery Ammunition Supply Vehicle
1511	FAB, Feline Advisory Bureau (UK feline charity)
1512	FAC, Forward Air Controller,Front of Allies for Change,Frontal Affinity Chromatography,Full Aperture Calibrator
1513	FACA, (US) Federal Advisory Committee Act
1514	FACH, Fuerza Aérea de Chile
1515	FACN, Fellow of the American College of Nutrition
1516	FACP, Fellow of the American College of Physicians
1517	FACS, Fellow of the American College of Surgeons, Formal Aspects of Computing Science,Fluorescent-activated cell sorting
1518	FACTS, Flexible Alternating Current Transmission System
1519	FAD, Flavin Adenine Dinucleotide,Fuck A Duck, Funding Authorization Document
1520	FAH, Federation of American Hospitals,Fine Arts and Humanities,Foreign Affairs Handbook
1521	FAM, Foreign Affairs Manual
1522	fao, Faroese language (ISO 639-2 code)
1523	FAO, Food and Agriculture Organization
1524	FAPA,Fellow of the American Psychological Association
1525	FAPHA,Fellow of the American Public Health Association
1526	FARP, Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1527	fas, Persian language (ISO 639-2 code)
1528	FAS, Federation of American Scientists,Fetal Alcohol Syndrome
1529	FASCAM, Family of Scatterable Mines[1]
1530	FASD, Fetal Alcohol Spectrum Disorder
1531	FASEB,(a/i) Federation of American Societies for Experimental Biology
1532	FAT, Field Artillery Tractor,File Allocation Table
1533	FAVS, Future Armoured Vehicle System
1534	FAW, Football Association of Wales
1535	FB,Facebook, An on-line social network
1536	FBCS, Fellow of the British Computer Society
1537	FBI, Federal Bureau of Investigation
1538	FBIS, Foreign Broadcast Information Service
1539	FBIDST, Fellow of the British Institute of Dental and Surgical Technologists
1540	FBM, Board foot
1541	FBR- Fast Breeder Reactor,Foundation for Biomedical Research,Friedman, Billings, Ramsey (now known as Arlington Asset Investment)
1542	FBS-Federal Bureau of Statistics (Pakistan),Fetal bovine serum,Football Bowl Subdivision (U.S. college football),Fukuoka Broadcasting Corporation,FC[edit]
1543	fC, Femtocoulomb
1544	FC- Fire Control,Football Club, Funnel Cloud (METAR Code)
1545	FCA- Fellowship of Christian Athletes,Fiat Chrysler Automobiles,Fraction of Combat Active forces
1546	FCC, U.S. Federal Communications Commission
1547	FCE, First Certificate in English
1548	FCF, Financial Free Cash Flow
1549	FCLA,Fraud Claims Law Associate
1550	FCM- Federation of Canadian Municipalities,Fogarty's Cove Music
1551	FCO, UK Foreign and Commonwealth Office
1552	FCS- Football Championship Subdivision (U.S. college football),Future Combat System
1553	FCW, Florida Championship Wrestling
1554	FCZ, Forward Combat Zone
1555	FD, Falun Dafa
1556	FDA, Food and Drug Administration (U.S.)
1557	FDC, Federal Detention Center (U.S.),Fire Direction Centre
1558	FDDI, Fibre Distributed Data Interface
1559	FDBK,(I) Feedback
1560	FDR, Flight Data Recorder,Franklin Delano Roosevelt
1561	Fe, Iron (Latin Ferrum)
1562	FE, Fully Exposed (armoured vehicle target, as opposed to Hull-Down)
1563	FEAR, First Encounter Assault Recon,False Evidence Appears Real
1564	FEAST,(a/i) Forum for European-Australian Science and Technology Cooperation
1565	FEATS, Festival of European Anglophone Theatrical Societies link title
1566	FEBA, Forward Edge of the Battle Area
1567	FED,(a/i) Field emission display
1568	FEDEP, Federation Development Process (Simulation)
1569	FEF, Frontal Eye Field (neurophysiology)
1570	FEMA-(a/i) Farm Equipment Manufacturers Association,(a/i) U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1571	FENS,(a/i) Federation of European Neuroscience Societies
1572	FEP, Firepower Enhancement Program,Fleet satellite (FLTSAT) Extremely high frequency (EHF) Package
1573	FES, Flywheel Energy Storage
1574	FEST, Frankfurt English Speaking Theatre link title
1575	FET, Field-effect transistor
1576	FEZ,(a/i) Fighter Engagement Zone
1577	ff, Fula language (ISO 639-1 code)
1578	fF, Femtofarad
1579	FF- Final Fantasy, Firefox (Web browser)
1580	FFA- Football Federation Australia,Pacific Islands Forum Fisheries Agency,Free-Fire Area,Fusiform Face Area,Future Farmers of America (today the National FFA Organization)
1581	FFB, Frum From Birth (referring to an observant Jew born into a religiously observant family)
1582	FFC, Free For Chat
1583	FFE, Fukuoka Futures Exchange
1584	FFG, Guided Missile Frigate (hull classification symbol)
1585	FFOV, Forward Field Of View
1586	FFS, For Fuck's Sake
1587	FFT- Fast Fourier Transform,Final Fantasy Tactics,FG[edit]
1588	FG, Falun Gong
1589	fg, Femtogram
1590	FG, Fog (METAR Code),French Guiana (FIPS 10-4 territory code)
1591	FGR, Flickr Group Roulette
1592	fH, Femtohenry
1593	FHFIF, Foster's Home for Imaginary Friends
1594	FHI, Family Health International, Fuji Heavy Industries, Ltd.
1595	fi, Finnish language (ISO 639-1 code)
1596	FI, Finland (ISO 3166 digram; FIPS 10-4 country code)
1597	FIB, Fucking Illinois Bastard (Wisconsin slang, variants exist)
1598	FIBUA,(i/a) Fighting In Built-Up Areas
1599	FIC, Fellowship for Intentional Community
1600	FID, Foreign Internal Defence
1601	FIE, Fly-In Echelon
1602	FIFO, First In, First Out
1603	FIFRA, Federal Insecticide, Fungicide, and Rodenticide Act
1604	FIGJAM, Fuck I'm Good, Just Ask Me
1605	fij, Fijian language (ISO 639-2 code)
1606	FILO, First In, Last Out (see also LIFO)
1607	FIMPT, Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1608	fin, Finnish language (ISO 639-2 code)
1609	FIN, Finland (ISO 3166 trigram)
1610	FIPS, Federal Information Processing Standard
1611	FIRES,Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1612	FISH, Fluorescence In-Situ Hybridisation
1613	FiST, Fire Support Team
1614	FITS, Flexible Image Transport System
1615	FIU, Florida International University
1616	fj, Fijian language (ISO 639-1 code)
1617	fJ, Femtojoule
1618	FJ, Fiji (ISO 3166 digram; FIPS 10-4 country code)
1619	FJD, Fiji dollar (ISO 4217 currency code)
1620	FJI, Fiji (ISO 3166 trigram)
1621	FJN, Financial Job Network
1622	fK, Femtokelvin
1623	FK, Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1624	FKP, Falkland Islands pound (ISO 4217 currency code)
1625	FKSM, Fort Knox Supplemental Manual
1626	FKT, Fastest Known Time
1627	fL, Femtolitre
1628	FL, Florida (postal symbol)
1629	FLA, Florida, Front Line Assembly,Future Large Aircraft
1630	FLAB, Four-letter abbreviation
1631	FLAC,(a/i) Free Lossless Audio Codec
1632	FLAC,(a/i) Free Legal Advice Centres
1633	FLB, Forward Logistics Base
1634	FLET,(a/i) Forward Line of Enemy Troops
1635	FLG, Falun Gong
1636	FLIP, Flight Information Publication
1637	FLIR, Forward Looking InfraRed (sensor)
1638	FLK, Falkland Islands (ISO 3166 trigram)
1639	FLOT,(a/i) Forward Line of Own Troops
1640	FLSA, Fair Labor Standards Act
1641	FLQ, Free Legal Questions
1642	FLTSAT, Fleet Satellite
1643	FLTSATCOM, Fleet Satellite Communication System
1644	FLUBOS, Fat, Lazy, Useless, Bag Of Shit
1645	FM, Factory Mutual http://fmglobal.com
1646	fm, Femtometre
1647	Fm, Fermium
1648	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)
1649	FMC- Federal Magistrates' Court (an Australian federal court, formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1650	FMCA, Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1651	FMCAfam, Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1652	FME, Formal Methods Europe
1653	FMECA, Failure Modes and Effect Criticality Analysis
1654	FMJD, Fédération Mondiale du Jeu de Dames[2]
1655	FMLA, Family Medical Leave Act
1656	fMRI, Functional Magnetic Resonance Imaging
1657	FMS- Federal Magistrates Service (an Australian federal court, now FMC), Flight Management System,Foreign Military Sales
1658	FMSF, False Memory Syndrome Foundation
1659	FMTV, Family of Medium Tactical Vehicles
1660	FMCG, (Fast Moving Consumer Goods)
1661	fN, Femtonewton
1662	FNA, Functional Needs Analysis
1663	fo, Faroese language (ISO 639-1 code)
1664	FO, Faroe Islands (ISO 3166 digram; FIPS 10-4 territory code), Force Operations (military),Forward Observer,Frame Optional (military symbology)
1665	FOAD, Fuck Off And Die
1666	FOAF, Friend Of A friend
1667	FoB, Free On Board (shipping)
1668	FOB,(i/a) Forward Operating Base
1669	FOC, Full Operational Capability,First of Class
1670	FoE, Friends of the Earth
1671	FOGC, Federal Oil and Gas Council
1672	FOH, Front Of House
1673	FOIA, Freedom of Information Act
1674	FOM, Federation Object Model
1675	FONSI, Finding of No Significant Impact
1676	FOO, Forward Observation Officer
1677	FOR, Field Of Regard,Frame Of Reference
1678	Fortran, The IBM Mathematical FORmula TRANslating System (programming language)
1679	FOS, Florida Ornithological Society,Full Operational Status
1680	FoS, Family of Systems
1681	FOSE, Fallout 3 Script Extender
1682	FOSE, Federal Office Systems Expo
1683	FOT, Free on truck
1684	FOTA, Fellow of the Orthodontic Technicians Association
1685	FOTC,Flight of the Conchords
1686	FOUO, For Official Use Only
1687	FOV, Field Of View
1688	FP, French Polynesia (FIPS 10-4 territory code)
1689	fps, frames per second (motion pictures, television, computer graphics)
1690	FPS- Fire Prevention System,First Person Shooter (computer/video games)
1691	FOOP, Friends Of Organ Pipes (Volunteer group)
1692	FQ, Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1693	FQDN, Fully Qualified Domain Name
1694	fr, French language (ISO 639-1 code)
1695	Fr, Francium
1696	FR, France (FIPS 10-4 country code; ISO 3166 digram)
1697	fra, French language (ISO 639-2 code)
1698	FRA- Federal Railroad Administration, France (ISO 3166 trigram)
1699	FRAGO, Fragmentary Order (military)
1700	FRAND, Fair, reasonable, and non-discriminatory (concept in standards-setting and intellectual property law)
1701	FRCP- Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1702	FRICBM, Full Range ICBM
1703	frr, North Frisian language (ISO 639-2 code)
1704	FRO, Faroe Islands (ISO 3166 trigram)
1705	FRS- Fellow of the Royal Society,U.S. Federal Reserve System
1706	FRSA, Fellow of the Royal Society of Art
1707	fry, West Frisian language (ISO 639-2 code)
1708	FRY, Federal Republic of Yugoslavia
1709	fs, Femtosecond
1710	fS, Femtosiemens
1711	FS- Fire Support (military), French Southern and Antarctic Territories (FIPS 10-4 territory code)
1712	FSA- Fire Support Area,UK Food Standards Agency,Functional Solution Analysis
1713	FSC- Federal Supply Classification, Forest Stewardship Council (ecological pressure group
1714	FSCL, Fire Support Co-ordination Line
1715	FSE, Fire Support Element
1716	FSF, Free Software Foundation
1717	FSH, Follicle Stimulating Hormone
1718	FSI, Fuel Stratified Injection
1719	FSM- Federated States of Micronesia (ISO 3166 trigram), Flying Spaghetti Monster (satirical religion)
1720	FSO- Fire Support Officer,Flotilla Staff Officer,Foreign Service Officer
1721	FSS, Fire Support Station
1722	FSSP, Families of Structurally Similar Proteins
1723	FST- Finance Support Team,Finlands Svenska Television (Finland's Swedish-language television),Future Soviet Tank (Cold War era)
1724	FSTC, Foreign Science Technology Center (now NGIC)
1725	fT, Femtotesla
1726	FTC, Federal Trade Commission
1727	FTE, Full Time Equivalent
1728	FTL, Faster Than Light
1729	FTP, File Transfer Protocol
1730	FTW, For The Win (a commonly used phrase used online to indicate success) F@#K The World, Forever Together Where ever (gang slogan)
1731	FTS, Flight Termination System used during some rocket launches
1732	FTS, Fuck That Shit
1733	FU, Smoke (METAR Code)
1734	FUBAR, Fucked/Fouled Up Beyond All Recognition/Repair
1735	FUCK, For, Unlawful, Carnal, Knowledge (Van Halen album title)
1736	FUD, Fear, Uncertainty & Doubt (marketing strategy)
1737	ful, Fula language (ISO 639-2 code)
1738	fV, Femtovolt
1739	fW, Femtowatt
1740	FW, Forward
1741	FWC, Football World Cup
1742	FWF, Fixed Word Format
1743	FWI, French West Indies
1744	FWIW, For What It's Worth
1745	FWS, U.S. Fish and Wildlife Service
1746	FWT, Fresh Water Tank
1747	FX, Firefox,Fox Extended, Metropolitan France (ISO 3166 digram; obsolete 1997),Special effect
1748	FXX, Metropolitan France (ISO 3166 trigram; obsolete 1997)
1749	fy, West Frisian language (ISO 639-1 code)
1750	FY, Fiscal Year, Former Yugoslav Republic of Macedonia (NATO country code)
1751	FYA, For Your Agenda
1752	FYDP, Five-Year Defense Plan (U.S.)
1753	FYI, For Your Information
1754	FYROM, Former Yugoslav Republic of Macedonia
1755	FZDZ, Freezing Drizzle (METAR Code)
1756	FZFG, Freezing Fog (METAR Code)
1757	FZRA, Freezing Rain (METAR Code)
1758	g, Gram
1759	G, Gauss, General Audiences (movie rating)
1760	G1, Assistant Chief-of-Staff, Personnel
1761	G2, Assistant Chief-of-Staff, Intelligence
1762	G3,many, including Heckler & Koch G3; see entry, Assistant Chief-of-Staff, Operations and Plans
1763	G4, Generation Four PowerPC microprocessor, Assistant Chief-of-Staff, Logistics
1764	G5, Generation Five PowerPC microprocessor, Assistant Chief-of-Staff, Public Affairs
1765	G6, Assistant Chief-of-Staff, Information Technology, Group of 6 (France, Germany, United States, Japan, United Kingdom, Italy) (1975)
1766	G7, Assistant Chief-of-Staff, Training, Group of 7 (G6 + Canada) (1976)
1767	G8, Assistant Chief-of-Staff, Finance, Group of 8 (G7 + Russia) (1998)
1768	G9, Assistant Chief-of-Staff, Civil-Military Co-operation (CIMIC)
1769	G10, Group of 10 (G7 + Belgium, Netherlands, Sweden, Switzerland; numbering 11 in fact)
1770	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)
1771	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)
1772	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)
1773	G77, Group of 77 (issued from the United Nations Conference on Commerce and Development, 1964; currently numbers 133)
1774	Ga, Gallium,Gigaannum
1775	GA, Gabon (ISO 3166 digram),The Gambia (FIPS 10-4 country code), Gamblers Anonymous,Georgia (postal symbol),Gigaampere,Goa (Indian state code)
1776	GAAR, General Anti-Avoidance Rule (tax evasion)
1777	GAB, Gabon (ISO 3166 trigram)
1778	GABA, Gamma-AminoButyric Acid
1779	GAD, Generalized Anxiety Disorder
1780	GAF, Garfield and Friends
1781	GALCIT, Guggenheim Aeronautical Laboratory, California Institute of Technology
1782	GAO, U.S. Government Accountability Office
1783	GAW, Global Atmospheric Watch
1784	GB, Gabon (FIPS 10-4 country code),United Kingdom of Great Britain and Northern Ireland (ISO 3166 digram) [glamour boy 7-9/10]
1785	GBBC, Great (Global) Backyard Bird Count
1786	GBE, Knight/Dame Grand Cross of the Order of the British Empire
1787	GBH- Great Bash Heel (Japanese professional wrestling stable),Gregory Bonner Hale (British design and advertising agency),Grievous bodily harm
1788	GBP, United Kingdom pound sterling (ISO 4217 currency code)
1789	GBR, United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1790	GBU, Glide-Bomb Unit,Global Business Unit
1791	GC- East Germany (NATO country code; obsolete 1990), General classification (cycling),General counsel,George Cross (British civil decoration), Gigacoulomb [Grindr cruise]
1792	GCA, Graduate in Claims Administration
1793	GCD,see entry
1794	GCF, Greatest Common Factor
1795	GCI, Ground-controlled interception
1796	GCN, Gamma-ray burst Coordination Network
1797	GCS, Global Coordinate System
1798	GCSE, General Certificate of Secondary Education (UK)
1799	gd, Scottish Gaelic language (ISO 639-1 code)
1800	Gd, Gadolinium
1801	GD, Grenada (ISO 3166 digram)
1802	GDC, Game Developers Conference,General Dental Council
1803	GDL, Game Definition Language
1804	GDP, General Dental Practitioner (UK),Gross Domestic Product
1805	GDR, German Democratic Republic (cf. DDR)
1806	GDR, General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1807	GDW, Game Designers Workshop
1808	Ge, Germanium
1809	GE, General Electric,Genetic Engineering (cf. GM), Georgia (ISO 3166 digram)
1810	GEBCO, General Bathymetric Chart of the Oceans
1811	GEC, Great Engineering Challenge
1812	GED, General Educational Development (high school equivalency credential in the U.S. and Canada)
1813	GEEP, Geophysical Equipment Exploration Platform
1814	GEL, Georgian lari (ISO 4217 currency code),Gilbert and Ellice Islands (ISO 3166 trigram; obsolete 1977)
1815	GEMA, Gas and Electricity Markets Authority,Georgia Emergency Management Agency, Gesellschaft für musikalische Aufführungs- und mechanische Vervielfältigungsrechte (German performance rights organisation), Global Engine Manufacturing Alliance
1816	GEN, Full General (four stars) in the U.S. Army
1817	GEO, Geostationary Earth Orbit, Georgia (ISO 3166 trigram)
1818	GEOS, Graphical Environment Operating System
1819	GEQ, Equatorial Guinea (IOC trigram, but not FIFA or ISO 3166)
1820	GER, Germany (IOC and FIFA trigram, but not ISO 3166)
1821	GeV, Gigaelectron-volt
1822	GEV, Ground Effect Vehicle
1823	GF- French Guiana (ISO 3166 digram),Gigafarad
1824	GFCF- Gluten-free, casein-free diet,Gross fixed capital formation
1825	GFCI, Ground Fault Circuit Interruptor (aka GFI)
1826	GFDL, GNU Free Documentation License
1827	GFE- Girlfriend experience (used in escort services),Good Faith Estimate,Government Furnished Equipment
1828	GFI, Ground Fault Interruptor (aka GFCI)
1829	GFL, German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1830	GFN, Global Footprint Network
1831	GG, Georgia (FIPS 10-4 country code)
1832	GGK,Good God Karma
1833	GGP- General Game Playing,General Growth Properties (U.S. shopping center owner),GH[edit]
1834	GH, Ghana (ISO 3166 digram; FIPS 10-4 country code),Gigahenry
1835	GHA, Ghana (ISO 3166 trigram)
1836	GHB, gamma-Hydroxybutyric acid
1837	GHC, Ghanan cedi (ISO 4217 currency code)
1838	Gi, Gibi
1839	GI, Galvanised Iron,Gastro-Intestinal,General Issue, Gibraltar (ISO 3166 digram; FIPS 10-4 territory code), Government Issue
1840	GIB, Gibraltar (ISO 3166 trigram)
1841	GIF, Graphics Interchange Format
1842	GIG, Global Information Grid
1843	GIGO, Garbage In Garbage Out (computing)
1844	GIMP, GNU Image Manipulation Program
1845	GIN, Guinea (ISO 3166 trigram), Guidelines International Network
1846	GINK,Going Insane Not Knowing,orig. Colorado 2010 M.Kalfas
1847	GINO, Godzilla In Name Only
1848	GIP, Gibraltar pound (ISO 4217 currency code)
1849	GIS, Geographic Information System, Google Image Search
1850	GISS,(a/i) General Impression of Size and Shape,Goddard Institute for Space Studies
1851	GJ, Gigajoule,Grenada (FIPS 10-4 country code),Gujarat (Indian state code)
1852	GJD, Geocentric Julian Day
1853	GK, Gigakelvin,Guernsey (FIPS 10-4 territory code)
1854	gl, Galician language (ISO 639-1 code)
1855	GL- Gigalitre, Graphics Language, Greenland (ISO 3166 digram; FIPS 10-4 territory code), Grenade Launcher
1856	gla, Scottish Gaelic language (ISO 639-2 code)
1857	GLAAD, Gay and Lesbian Alliance Against Defamation
1858	GLAC, General Ledger Accounting Code
1859	GLAST, Gamma-ray Large Area Space Telescope
1860	GLBA, Gramm-Leach-Bliley Act
1861	GLC, Gas-liquid chromatography
1862	gle, Irish language (ISO 639-2 code)
1863	glg, Galician language (ISO 639-2 code)
1864	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
1865	GLP, Guadeloupe (ISO 3166 trigram)
1866	GLUT,(a/i) OpenGL Utility Toolkit
1867	glv, Manx language (ISO 639-2 code)
1868	GLV, Gained Life Value
1869	Gm, Gigametre
1870	GM- The Gambia (ISO 3166 digram), GameMaster (role-playing),General Motors,Genetically Modified, Germany (FIPS 10-4 country code), Guru Meditation (computing)
1871	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
1872	GMB- The Gambia (ISO 3166 trigram), General, Municipal, Boilermakers (and Allied Trade Union)
1873	GMC- U.K. General Medical Council,Gospel Music Channel
1874	GMD, Gambian dalasi (ISO 4217 currency code)
1875	GMFSC, Ground Mobile Forces Satellite Communications
1876	GMI- Generic Model Interface,Geometry Model Instance
1877	GML-Generalized Markup Language,Geography Markup Language,Game Maker Language,Graph Modelling Language,Graphical Motion Language,GUI Markup Language
1878	GMO, Genetically Modified Organism
1879	GMPCS, Global Mobile Personal Communications by Satellite
1880	GMT- Giant Magellan Telescope,Greenwich Mean Time,GN[edit]
1881	gn, Guaraní language (ISO 639-1 code)
1882	GN- Giganewton,Guinea (ISO 3166 digram)
1883	GNAS, Grand National Archery Society
1884	GNB, Guinea-Bissau (ISO 3166 trigram)
1885	GNF, Guinean franc (ISO 4217 currency code)
1886	GNOME, GNU Network Object Model Environment
1887	GNP, Gross National Product
1888	GNQ, Equatorial Guinea (ISO 3166 trigram)
1889	GnRH, Gonadotropin-Releasing Hormone
1890	GNU, GNU's Not Unix
1891	GO, Glorioso Islands (FIPS 10-4 territory code)
1892	GOA- General of the Army (United States only), Gun Owners of America
1893	GOAT, Greatest of all time (LL Cool J album title)
1894	GOC, General Officer Commanding
1895	GOES, Geostationary Operational Environmental Satellite
1896	GOP, Grand Old Party
1897	gorp, granola, oats, raisins, peanuts (another name for trail mix), probably a backronym
1898	GOSC,(a/i) General Officer Steering Committee
1899	GOSH, Great Ormond Street Hospital
1900	GOSP, Gas/Oil Separation Plant
1901	GOTS, Government off-the-shelf
1902	GOYADIN, Get Off Your Arse, Do It Now (anti-procrastination mantra)
1903	GP, General Practitioner,General Purpose,Grand Prix, Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1904	GPA, Grade Point Average
1905	GPC, Global Path Cache
1906	GPG, GNU Privacy Guard
1907	GPIB, General-Purpose Instrumentation/Interface Bus
1908	GPL, GNU General Public License
1909	GPMP, General Purpose Macro Processor
1910	GPO, General Post Office
1911	GPPC, Genetics and Public Policy Center
1912	GPR, Ground-Penetrating Radar
1913	GPS, General Problem Solver,Global Positioning System
1914	GPT, GEC-Plessey Telecommunications,General Purpose Technology,Get Paid To website
1915	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]
1916	GR, Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1917	GRAIL, Gravity Recovery and Interior Laboratory
1918	GRAS, Generally recognized as safe (FDA list)
1919	GRB, Gamma-Ray Burst
1920	GRC, Greece (ISO 3166 trigram)
1921	GRD, Grenada (ISO 3166 trigram)
1922	GRE- Graduate Record Examination, Greece (IOC and FIFA trigram, but not ISO 3166)
1923	grep, [search] Globally for Regular Expression, Print [lines]
1924	GRid,Global Release Identifier, a music industry identifier from the RIAA and IFPI
1925	GRID, Gay-Related Immune Deficiency (original name of AIDS)
1926	GriT, Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1927	GRL, Greenland (ISO 3166 trigram)
1928	GRN- Grenada (IOC and FIFA trigram, but not ISO 3166), Goods Received Note
1929	grn, Guaraní language (ISO 639-2 code)
1930	GRP, Graphite-reinforced plastic, see Carbon-fiber-reinforced polymer
1931	Gs, Gigasecond
1932	GS- General Schedule (US civil service pay scale),General Support, Gigasiemens,South Georgia and the South Sandwich Islands (ISO 3166 digram)
1933	GSR, Gun Shot Residue
1934	GSA, U.S. General Services Administration
1935	GSD, Graphical Situation Display
1936	GSGB,(God send glamour boy 9-10/10)
1937	GSK, GlaxoSmithKline [good sexual karma]
1938	GSN,(a/i) Game Show Network
1939	GSO, General Services Officer (U.S. Department of State)
1940	GSOH, Good Sense Of Humour
1941	GSP,Georges St-Pierre (Canadian MMA fighter)
1942	GSS, Generic Security Services
1943	GST, Goods and Services Tax (Australia, Canada, and other countries)
1944	GSW, Gunshot wound
1945	GT, Gigatesla, Gran Turismo,Grand Touring, Guatemala (FIPS 10-4 country code; ISO 3166 digram)
1946	GTA, Grand Theft Auto
1947	GTB, Get to bed, namely to get a new job after a long time of searching, usually following a phone call
1948	GTC, Gran Telescopio Canarias (Spanish, Canaries Great Telescope)
1949	GTD, Getting Things Done
1950	GTG, Got To Go (Internet chat)
1951	GTK, Good To Know (Internet chat)
1952	GTGN, Getty Thesaurus of Geographic Names
1953	GTM, Guatemala (ISO 3166 trigram)
1954	GTQ, Guatemalan quetzal (ISO 4217 currency code)
1955	GTV, Gross Tumor Volume quetzal (ISO 4217 currency code)
1956	gu, Gujarati language (ISO 639-1 code)
1957	GU, Guam (postal symbol; ISO 3166 digram)
1958	GUA, Guatemala (IOC and FIFA trigram, but not ISO 3166)
1959	GUF, French Guiana (ISO 3166 trigram)
1960	GUILT, Gangliated Utrophin Immuno Latency Toxin
1961	guj, Gujarati language (ISO 639-2 code)
1962	GULCR, Grupo de Usuarios de Linux de Costa Rica
1963	GUT, Grand Unification Theory
1964	gv, Manx language (ISO 639-1 code)
1965	GV, Gigavolt,Guinea (FIPS 10-4 country code)
1966	GW, Games Workshop,Germ Warfare, Gigawatt, Guided Weapon, Guinea-Bissau (ISO 3166 digram)
1967	GWARS, Ground Warfare System (simulation)
1968	GWAS, Grand Western Archery Society
1969	GWOT, Global War on Terrorism
1970	GWS, Gulf War Syndrome,Greater Western Sydney
1971	GXA, Global XML Web Services Architecture
1972	GXE, Gene-enivronment interaction
1973	GXF, General Exchange Format
1974	GXH, IATA code of Gannan Xiahe Airport
1975	GXL, Graph eXchange Language
1976	GXM, Matrox Graphics eXpansion Module
1977	GXP, Grid Exit Point, Global Xchange Programme, Indication of highest performance level on some Pontiac vehicles
1978	GxP, Good X Practice (X can mean: clinical, manufacturing, pharmaceutical, etc.)
1979	GXY, IATA code of Greeley-Weld County Airport
1980	GY, Guyana (FIPS 10-4 country code; ISO 3166 digram)
1981	GYD, Guyana dollar (ISO 4217 currency code)
1982	GYY, Gary/Chicago International Airport (IATA Airport Code)
1983	GZ, Gaza Strip (FIPS 10-4 territory code), Ground Zero
1984	GZK, Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1985	h, Hecto
1986	H, Henry,Hydrogen
1987	ha, Hausa language (ISO 639-1 code),Hectare
1988	HA, Haiti (FIPS 10-4 country code), High Availability
1989	HAARP, High Frequency Active Auroral Research Program
1990	HAART, Highly Active Anti-Retroviral Therapy
1991	HAI, Human Awareness Institute
1992	HAL, Hardware Abstraction Layer
1993	HALO, High Altitude Low Opening (parachute jump)
1994	HALT- Highly Accelerated Life Test, Hungry Angry Lonely Tired
1995	HAM, Amateur radio operator
1996	HANS, Head And Neck Support (device used in many race cars)
1997	HARM, High-speed Anti-Radiation Missile
1998	hat, Haitian Creole language (ISO 639-2 code)
1999	HAT,(i/a) Highest Astronomical Tide (nautical charts), Hungarian Automated Telescope
2000	hau, Hausa language (ISO 639-2 code)
2001	HAW, Heavy Antitank Weapon
2002	HAWK, Homing All the Way Killer (air defence system)
2003	HAZ, Heat-Affected Zone
2004	HAZMAT, Hazardous Materials
2005	HBCD, HexaBromoCycloDodecane
2006	HBCI, Home Banking Computer Interface
2007	HBO, Home Box Office
2008	HBR, Harvard Business Review
2009	HBT, Heterojunction Bipolar Transistor
2010	HBV, Hepatitis B Virus
2011	HCCI, Homogeneous Charge Compression Ignition
2012	HCF, Highest Common Factor
2013	HCI, Human-Computer Interaction/Interface
2014	HCSC, Higher Command and Staff Course
2015	HCT, Higher Colleges of Technology, tertiary education institution in the United Arab Emirates (UAE)
2016	HD- Henry Draper (star catalogue),Hull-Down (armoured vehicle target, as opposed to Fully Exposed),High Definition,Huntington's Disease
2017	HDD- Hard Disk Drive,High-Density Disk
2018	HDL, High-Density Lipoprotein
2019	HDM, Human Decision-Making
2020	HDMI,High Definition Multimedia Interface
2021	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)
2022	HDRA, Henry Doubleday Research Association
2023	HDTV, High-Definition Television
2024	he, Hebrew language (ISO 639-1 code)
2025	He, Helium
2026	HE, High Explosive
2027	HEAT, High Explosive Anti-Tank (ammunition)
2028	heb, Hebrew language (ISO 639-2 code)
2029	HEBA, Hellenic Basketball Clubs Association
2030	HEER, High-Explosive Extended Range (ammunition)
2031	HEIC, Honourable East India Company
2032	HEMP, High-Altitude Electromagnetic Pulse
2033	HEO- High Earth Orbit, Highly Elliptical Orbit
2034	HEOSS, High Earth Orbit Space Surveillance
2035	HEP, High-Explosive Plastic (ammunition)
2036	HEPA,(a/i) High-Efficiency Particulate Air (filter)
2037	her, Herero language (ISO 639-2 code)
2038	HESH, High-Explosive, Squash-Head (ammunition)
2039	HESV, Heavy Engineering Support Vehicle
2040	HETT, Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
2041	HEU, Highly Enriched Uranium
2042	Hewitts, Hills in England, Wales and Ireland over Two Thousand feet (with topographic prominence of at least 30 m)
2043	Hf, Hafnium
2044	HF, High Frequency
2045	HFE, Human Fertilisation and Embryology (UK Act)
2046	HFE, The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
2047	HFEA, Human Fertilisation and Embryology Authority (UK)
2048	Hg, Mercury (Latin Hydrargyrum)
2049	HGC, UK Human Genetics Commission
2050	HGF, Human Growth Factor
2051	HGTV, Home & Garden Television
2052	HHB,Ha Ha Bonk,The noise made when you laugh your head off. Used instead of LOL...
2053	hi, Hindi language (ISO 639-1 code)
2054	HI, Hawaii (postal symbol)
2055	HIH, His (or Her) Imperial Highness
2056	HIM, His (or Her) Imperial Majesty
2057	HIMAD, High to Medium Altitude Air Defence (see also H/MAD)
2058	HIMEZ, High Altitude Missile Engagement Zone
2059	HIMYM,How I Met Your Mother
2060	hin, Hindi language (ISO 639-2 code)
2061	HIPAA, U.S. Health Insurance Portability and Accountability Act
2062	Hipparcos, HIgh Precision Parallax COllecting Satellite
2063	Hird, Hurd of interfaces representing depth (cf. HURD)
2064	HiRISE, High Resolution Imaging Science Experiment
2065	HIT, Health Information Technology
2066	HIV, Human Immunodeficiency Virus
2067	HIWT, Hobart Institute of Welding Technology
2068	HJD, Heliocentric Julian Day
2069	HK, Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
2070	HKD, Hong Kong dollar (ISO 4217 currency code)
2071	HKG, Hong Kong (ISO 3166 trigram)
2072	HKS, HyperKinetic Syndrome
2073	hL, Hectolitre
2074	HL, Holding Line
2075	HLA, High Level Architecture (simulation),Human Leukocyte Antigen
2076	HLL, High-Level Language
2077	HLN, Headline News
2078	HLOS, High Level Output Specification
2079	HLVW, Heavy Logistics Vehicle, Wheeled
2080	HM, Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
2081	HMCE, Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
2082	HMCS- Her/His Majesty's Canadian Ship,Her Majesty's Courts Service (former UK agency; succeeded by Her Majesty's Courts and Tribunals Service)
2083	HMD, Heard and McDonald Islands (ISO 3166 trigram)
2084	HMF, HydroxyMethyl Furfural
2085	HMM, Hidden Markov model
2086	hmo, Hiri Motu language (ISO 639-2 code)
2087	HMO, Health maintenance organization
2088	HMP, Her Majesty's Prison
2089	HMRC, Her/His Majesty's Revenue and Customs
2090	HMS- Helmet-mounted display,Her/His Majesty's Ship (Royal Navy)
2091	HMSO, Her Majesty's Stationery Office
2092	HMV, His Master's Voice
2093	HN, Honduras (ISO 3166 digram)
2094	HND, Honduras (ISO 3166 trigram)
2095	HNL, Honduran lempira (ISO 4217 currency code)
2096	ho, Hiri Motu language (ISO 639-1 code)
2097	Ho, Holmium
2098	HO, Honduras (FIPS 10-4 country code)
2099	HOLLAND, Hope Our Love Lasts And Never Dies
2100	HOMES,the Great Lakes; Huron, Ontario, Michigan, Erie, Superior
2101	HONY,Humans of New York, a photoblog.
2102	HOPI, Hybrid Optical and Packet Infrastructure (see Internet2, Abilene Network)
2103	HoReCa, Hotel, Restaurant and Catering
2104	HORIZON, Hélicoptère d'observation radar et d'investigation sur zone (French, Zone Investigation and Radar Observation Helicopter)
2105	HOSTAC, Helicopter Operations from Ships Other Than Aircraft Carriers
2106	HOT, Highly Optimised Tolerance
2107	HOTAS, Hands on throttle-and-stick
2108	HOV, High Occupancy Vehicle
2109	hp, horse power
2110	HP, Hewlett-Packard,Hindustan Petroleum, Himachal Pradesh (Indian state code)
2111	HPA, UK Health Protection Agency
2112	HPCL, Hindustan Petroleum Corporation Limited
2113	HPLC, High Performance Liquid Chromatography
2114	HPT, High[er] Payoff Target
2115	HPV, Human Papilloma Virus
2116	HQ, HeadQuarters, Howland Island (FIPS 10-4 territory code)
2117	HQDA, HeadQuarters, Department of the Army
2118	hr, Croatian language (ISO 639-1 code)
2119	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
2120	HRBL, High-level Representation of Behavior Language (original name of the Herbal language)
2121	HRD, Human Resource Development
2122	HRED, (U.S. Army Research Laboratory's) Human Research and Engineering Directorate (Aberdeen Proving Ground, Maryland)
2123	HRF, High iness Forces
2124	HRH, His (or Her) Royal Highness
2125	HRK, Croatian kuna (ISO 4217 currency code)
2126	HRM, His (or Her) Royal Majesty
2127	HRM, Human Resource Management
2128	HRT, Hormone Replacement Therapy
2129	hrv, Croatian language (ISO 639-2 code)
2130	HRV- Croatia (ISO 3166 trigram), High Resolution Visible,HS[edit]
2131	Hs, Hassium
2132	HSBC, The Hong Kong and Shanghai Banking Corporation
2133	HSC, Higher School Certificate
2134	HSM, High School Musical
2135	HSMAD, Human Science/Modeling and Analysis Data
2136	HSN, Home Shopping Network
2137	HSPH, Harvard School of Public Health
2138	HSS- Health Service Support, High-Speed Steel
2139	HSSI, High-Speed Serial Interface
2140	HST,see entry
2141	HSV- Herpes Simplex Virus,Hue Saturation Value (colour model),HT[edit]
2142	ht, Haitian Creole language (ISO 639-1 code)
2143	HTA, HyperText Application
2144	HTC-High Tech Computer Corporation, original name of the company now known simply as HTC,Horry Telephone Cooperative
2145	HTFU, Harden The Fuck Up
2146	HTG, Haitian gourde (ISO 4217 currency code)
2147	HTH, Hope That Helps
2148	HTI, Haiti (ISO 3166 trigram)
2149	HTML, HyperText Markup Language
2150	HTR, Heated Towel Rail
2151	HTS, High-Temperature Superconducting wire
2152	HTTP, HyperText Transfer Protocol
2153	HU, Hungary (ISO 3166 digram; FIPS 10-4 country code)
2154	HUD,(i/a) Head-Up Display,Housing and Urban Development
2155	HUF, Hungarian forint (ISO 4217 currency code)
2156	HUHA, Head up his/her ass (Marine salute; probably a backcronym)
2157	HUMINT, Human Intelligence (military parlance)
2158	hun, Hungarian language (ISO 639-2 code)
2159	HUN, Hungary (ISO 3166 trigram)
2160	HURD, Hird of Unix-Replacing Daemons (cf. Hird)
2161	HVU, High Value Unit (military)
2162	HV, Upper Volta (ISO 3166 digram; obsolete 1984)
2163	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.
2164	HVAP, High Velocity Armour Piercing (ammunition)
2165	HVHF,High velocity human factors
2166	HVM, High Velocity Missile
2167	HVO, Upper Volta (ISO 3166 trigram; obsolete 1984)
2168	HVP, HarborView Properties,High vacuum process,Hydrolyzed vegetable protein,Human Variome Project,High Velocity Protection,H.V.P. (rapper),High Voltage Protection,High Vapor Pressure,Hub Voice Processor,High-Velocity Projectile,High-Video Pass,High-Velocity Particle
2169	HW, Hardware, High Water (nautical charts)
2170	HWM, Hardware morphing (computer graphics rendering)
2171	HX, IATA code of Hong Kong Airlines, Medical history, Hydrogen halide, Concept automobile by HUMMER
2172	HXB, The glycoprotein Tenascian C
2173	hy, Armenian language (ISO 639-1 code)
2174	hye, Armenian language (ISO 639-2 code)
2175	HYS, Harvard, Yale, Stanford (perennially named as the top three law schools in the U.S.)
2176	hz, Herero language (ISO 639-1 code)
2177	Hz, Hertz
2178	HZ, Haze (METAR Code)
2179	I, Iodine,One (in Roman numerals)
2180	ia, Interlingua language (ISO 639-1 code)
2181	IA, Iowa (postal symbol)
2182	IAAL, I Am A Lawyer
2183	IAB, International Association for Biologicals
2184	IACREOT, International Association of Clerks, Recorders, Election Officials, and Treasurers
2185	IAD, Ion Assisted Deposition
2186	IADS, Integrated Air Defence System
2187	IAEA, International Atomic Energy Agency
2188	IAF,{i} Industrial Areas Foundation
2189	IAFG, Information Assurance Focus Group
2190	IAI, International African Institute,Israel Aircraft Industries
2191	IANA, Internet Assigned Numbers Authority
2192	IANAL, I Am Not A Lawyer
2193	IAQ, Indoor air quality,Infrequently Asked Questions
2194	IAS, Image Assessment System
2195	IASIP, It's Always Sunny in Philadelphia
2196	IATA,(a/i) International Air Transport Association
2197	IATF,International Automotive Task Force
2198	IATSE,International Alliance of Theatrical Stage Employees
2199	IAU, International Association of Universities,International Astronomical Union
2200	IAUC, International Astronomical Union Circular
2201	IAW, In Accordance With
2202	IB, International Baccalaureate
2203	IBA, Important Bird Area
2204	IBD, Inflammatory Bowel Disease
2205	IBDM, Information Based Decision Making
2206	IBDS, Integrated Biological Detection System,International Business Development Specialist
2207	IBM, International Business Machines
2208	ibo, Igbo language (ISO 639-2 code)
2209	IBRD, International Bank for Reconstruction and Development (part of the World Bank)
2210	IBS, Irritable Bowel Syndrome
2211	IC, Ice Crystals (METAR Code),Iceland (FIPS 10-4 country code), Integrated Circuit,[inner circle]
2212	ICANN, Internet Corporation for Assigned Names and Numbers
2213	ICAO, International Civil Aviation Organization
2214	ICBM, Intercontinental Ballistic Missile
2215	ICBN, International Code of Botanical Nomenclature
2216	ICC, Integrated Command and Control,International Criminal Court,International Cricket Council,Interstate Commerce Commission,International Chamber of Commerce
2217	ICD, Implantable Cardioverter-Defibrillator,Initial Capabilities Document,International Classification of Diseases
2218	ICE,(i/a) In case of emergency
2219	ICES,(a/i) International Council for the Exploration of the Sea
2220	ICF, Intelligent Community Forum
2221	ICM, Improved Conventional Munition,Integrated Collection Management,International Congress of Mathematicians,Iraq Campaign Medal
2222	ICMP, Internet Control Message Protocol
2223	ICNAF, International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
2224	ICNI, Integrated Communication, Navigation, and Identification
2225	ICO, Intermediate Circular Orbit
2226	ICP, Inductively coupled plasma,Insane Clown Posse
2227	ICPE,(a/i) International Conference on Pharmacoepidemiology, the annual conference of the International Society for Pharmacoepidemiology
2228	ICRAF, International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
2229	ICRISAT,(i/a) International Crops Research Institute for the Semi-Arid Tropics
2230	ICRL, Individual Component Repair List
2231	ICRS, International Celestial Reference System
2232	ICS, In-Country Support,Intelligence and Communications Systems,Interim Contractor Support
2233	ICSI, Intracytoplasmic Sperm Injection
2234	ICT, Information and communication technologies
2235	ICTH, Island Closest to Heaven/Hell Final Fantasy VIII
2236	ICV, Infantry Carrier Vehicle
2237	ICW, In Co-ordination With,Indonesia Corruption Watch,Infectious and Chemotherapeutic Waste,Insulating Concrete Wall,Integral Crystalline Waterproofing, Interactive Courseware
2238	ICYMI, In Case You Missed It
2239	ICZN, International Code of Zoological Nomenclature,International Commission on Zoological Nomenclature
2240	id, Indonesian language (ISO 639-1 code)
2241	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)
2242	IDA- U.S. Institute for Defense Analyses,International Development Association (part of the World Bank
2243	IDC, International Data Corporation
2244	IDDI, I don't do initialisms (see irony)
2245	IDE- Integrated Development Environment,Integrated Drive Electronics
2246	IDeA, Improvement and Development Agency, the former name of Local Government Improvement and Development in the United Kingdom
2247	IDEA- Individuals with Disabilities Education Act (U.S.),International Data Encryption Algorithm,International Design Excellence Awards
2248	IDF- Israel Defense Forces,Intel Development Forum,International Dairy Federation
2249	IDGAF, I don't give a fuck
2250	IDK, I don't know
2251	IDKIBTI,I don't know, I'm black, that's it
2252	IDL, Interface Definition Language
2253	IDN, Indonesia (ISO 3166 trigram)
2254	ido, Ido language (ISO 639-2 code)
2255	IDR, Indonesian rupiah (ISO 4217 currency code)
2256	ie, Interlingue language (ISO 639-1 code)
2257	IE, Indo-European languages,Internet Explorer, Ireland (ISO 3166 digram),Iced Earth
2258	IEA, International Energy Agency
2259	IEC, International Electrotechnical Commission
2260	IED, Improvised Explosive Device
2261	IELTS, International English Language Testing System
2262	IER, Information Exchange Requirement
2263	IET, Institution of Engineering and Technology
2264	IET,(ii) Initial Entry Training
2265	IETF, Internet Engineering Task Force
2266	IEW, Intelligence and Electronic Warfare
2267	IFAB, International Football Association Board
2268	IFAH, International Federation for Animal Health
2269	IFAP, International Federation of Agricultural Producers
2270	IFC, International Finance Corporation (part of the World Bank), Independent Film Channel
2271	IFF, Identification, Friend or Foe,Individually Fresh Frozen,International Flavors and Fragrances
2272	IFFN, Identification, Friend, Foe, or Neutral
2273	IFO, Identified Flying Object (see also UFO)
2274	IFOR, UN Implementation Force, Institute for Operations Research,International Fellowship of Reconciliation
2275	IFOV, Instantaneous Field of View
2276	IFPI, International Federation of Phonographic Industries
2277	IFR, Instrument Flight Rules
2278	IFRB, International Frequency Registration Board
2279	IFV, Infantry Fighting Vehicle
2280	ig, Igbo language (ISO 639-1 code)
2281	IG, Inspector General
2282	IGNOU, Indira Gandhi National Open University
2283	IGS, International Ground Station
2284	IGY, Israeli Gay Youth,International Geophysical Year
2285	IHH, Idiopathic Hypogonadotropic Hypogonadism
2286	IHO,(i/a) International Hydrographic Organization
2287	IHR, Institute for Historical Review
2288	IHSI,Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
2289	ii, Sichuan Yi language (ISO 639-1 code)
2290	II, Two (in Roman numerals)
2291	IICA, Inter-American Institute for Cooperation on Agriculture
2292	IIE, Innovative Interstellar Explorer
2293	iii, Sichuan Yi language (ISO 639-2 code)
2294	III, Three (in Roman numerals)
2295	IIRC, If I Recall/Remember Correctly
2296	IISS, International Institute for Strategic Studies
2297	IIT, Illinois Institute of Technology,Indian Institutes of Technology,Indiana Institute of Technology
2298	IJN, Imperial Japanese Navy (World War II)
2299	IJWP, Interim Joint Warfare Publication
2300	ik, Inupiaq language (ISO 639-1 code)
2301	IKEA, Ingvar Kamprad (the company's founder), Elmtaryd (the farm where he was born and raised), Agunnaryd (a village and parish near the farm)
2302	iku, Inuktitut language (ISO 639-2 code)
2303	IL, Illinois (postal symbol),Israel (ISO 3166 digram)
2304	ILC, International Law Commission,International Linear Collider
2305	ILDS, Improved Landmine Detection System
2306	ile, Interlingue language (ISO 639-2 code)
2307	ILO, International Labour Organization
2308	ILRI, International Livestock Research Institute
2309	ILS, Israeli shekel (ISO 4217 currency code)
2310	ILY, IATA code for Islay Airport (Scotland), I Love You [pronounced ILL-LEE]
2311	IM- Isle of Man (FIPS 10-4 territory code), Instant Message (internet speech)
2312	IMA- Intermediate Maintenance Activity,Institute of Mathematics and Applications
2313	IMBD, International Migratory Bird Day
2314	IMDb,Internet Movie Database
2315	IME, In My Experience
2316	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)
2317	IMHO, In My Humble/Honest Opinion, cf. IMO
2318	IML, International Mister Leather
2319	IMLAST, International Movement for Leisure Activities in Science and Technology,see MILSET
2320	IMNM,,Immune-mediated necrotizing myopathy a rare, but serious ADR of statins [1]
2321	IMNSHO, In My Not So Humble Opinion
2322	IMPAC, International Merchant Purchase Authorization Card
2323	IMPACT, International Medical Products Anti-Counterfeiting Taskforce
2324	IMPATT, IMPact Avalanche Transit Time diode
2325	IMPT, Institute of Maxillofacial Prosthetists and Technologists
2326	IMRO-Internal Macedonian Revolutionary Organization,Irish Music Rights Organisation
2327	IMRL, Individual Material iness List
2328	IMS- Information Management System,International Meat Secretariat,Ion Mobility Spectrometer
2329	IMSA- Illinois Mathematics and Science Academy,International Mind Sports Association,International Motor Sports Association
2330	IMsL, International Ms. Leather
2331	IMT, Integrated Management Tool
2332	IMU, International Mathematical Union
2333	In, Indium
2334	IN, India (FIPS 10-4 country code; ISO 3166 digram),Indiana (postal symbol),Infantry
2335	ina, Interlingua language (ISO 639-2 code)
2336	INA, Immigration and Nationality Act
2337	INAS, International Near-Earth Asteroid Survey
2338	INCITS, InterNational Committee for Information Technology Standards
2339	ind, Indonesian language (ISO 639-2 code)
2340	IND, India (ISO 3166 trigram)
2341	inet, the Internet
2342	INDIGO, (U.S.) INtelligence DIvision Gaming Operation
2343	INFORMS, (U.S.) Institute for Operations Research and the Management Sciences
2344	INFOSEC, Information Security
2345	INLA, Irish National Liberation Army
2346	INMARSAT, International Maritime Satellite organization
2347	INR, Indian rupee (ISO 4217 currency code)
2348	INRIA, Institut national de recherche en informatique et en automatique
2349	INS, Immigration and Naturalization Service
2350	InSAR, Interferometric synthetic aperture radar
2351	INST, Information Standards and Technology
2352	INTSUM, Intelligence Summary
2353	INTERFET, International Force for East Timor
2354	io, Ido language (ISO 639-1 code)
2355	IO, British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
2356	IOC- Initial Operational Capability,Intergovernmental Oceanic Commission,International Olympic Committee,International Ornithological Congress
2357	IOLTA, Interest on Lawyer Trust Accounts (charitable funding mechanism, especially for legal aid)
2358	IOM- Iowa, Ohio, Michigan (soybean origin),Institute of Medicine,International Organisation for Migration,Isle of Man
2359	IONA, Islands of the North Atlantic (alternate name for Great Britain, Ireland, the Isle of Man, and related islands)
2360	IOT, British Indian Ocean Territory (ISO 3166 trigram)
2361	IP, Clipperton Island (FIPS 10-4 territory code), Initial Point,Intellectual Property,Internet Protocol
2362	IPA, India Pale Ale,International Phonetic Alphabet,Isopropyl alcohol
2363	IPB, Intelligence Preparation of the Battlefield
2364	IPCC, Intergovernmental Panel on Climate Change,Independent Police Complaints Commission
2365	ipk, Inupiaq language (ISO 639-2 code)
2366	IPL, Inferior Parietal Lobule
2367	IPO, Initial Public Offering
2368	IPR, In Progress Review,Intellectual Property Rights,Intelligence Production Requirement
2369	IPT, Integrated Product/Project Team
2370	IPTS, Institute for Prospective Technological Studies
2371	IPTV, Internet Protocol TeleVision
2372	IPW, Interrogation of Prisoners of War
2373	IQ, Intelligence Quotient, Iraq (ISO 3166 digram)
2374	IQD, Iraqi dinar (ISO 4217 currency code)
2375	Ir, Iridium
2376	IR, Infrared,Intelligence requirement (military), Iran (FIPS 10-4 country code; ISO 3166 digram),Iran Air (IATA alpha code) see entry for more
2377	IRA, Individual Retirement Account,Irish Republican Army (see also List of organisations known as the Irish Republican Army for groups claiming descent from this organisation)
2378	IRAD, Internal Research and Development
2379	IRAN,(I) Inspect and Repair As Necessary
2380	IRAS, Infrared Astronomical Satellite
2381	IRB, International Rugby Board
2382	IRBM, Intermediate Range Ballistic Missile
2383	IRC, International Red Cross,International Reply Coupon,Internet Relay Chat
2384	IREA, Intermountain Rural Electric Association
2385	IRL, Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
2386	IRN, Iran (ISO 3166 trigram)
2387	IRINN,Islamic Republic of Iran News Network
2388	IRO, International Refugee Organisation
2389	IRQ, Iraq (ISO 3166 trigram)
2390	IRR, Iranian rial (ISO 4217 currency code)
2391	IRS, U.S. Internal Revenue Service
2392	IRST, Infra-red Search and Track
2393	is, Icelandic language (ISO 639-1 code)
2394	IS- Iceland (ISO 3166 digram),Israel (FIPS 10-4 country code)
2395	ISA- Individual Savings Account,Industry Standard Architecture,Instruction Set Architecture,International Seabed Authority
2396	ISAAA, International Service for the Acquisition of Agri-biotech Applications
2397	ISAF- International Sailing Federation,International Security Assistance Force
2398	ISAR, Inverse SAR (Synthetic Aperture Radar)
2399	ISB, Intermediate Staging Base
2400	ISBN, International Standard Book Number (ISO 2108)
2401	ISCCP, International Satellite Cloud Climatology Project
2402	ISCII, Indian Standard Code for Information Interchange
2403	ISDN,Integrated Services Digital Network
2404	ISEF, Intel International Science and Engineering Fair
2405	ISEN, Internet Search Environment Number
2406	ISF, Internal Security Force
2407	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
2408	ISIL,(i/a) Islamic State of Iraq and the Levant
2409	ISIS-(i/a) Institute for Science and International Security,Islamic State of Iraq and Syria
2410	ISK, Icelandic krona (ISO 4217 currency code)
2411	isl, Icelandic language (ISO 639-2 code)
2412	ISL, Iceland (ISO 3166 trigram)
2413	ISLN, International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
2414	ISM- Industrial, scientific or medical, Interstellar medium
2415	ISMB, International Society of Matrix Biologists
2416	ISMC, Intelligent Sounding Meaningless Conversation
2417	ISOGP, Indian Society of Orthodontics for General Practitioners [2]
2418	ISP- International Standardized Profile,Internet Service Provider,Information Systems Professional
2419	ISPE,(a/i) International Society for Pharmacoepidemiology
2420	ISR- Intelligence, Surveillance and Reconnaissance, Israel (ISO 3166 trigram)
2421	ISRO, Indian Space Research Organisation
2422	ISS- International Shorebird Survey (North America),International Space Station
2423	ISSCR, International Society for Stem Cell Research
2424	ISSN, International standard serial number (ISO 3297)
2425	IST- Information System Technology,UCF Institute for Simulation and Training
2426	ISTAR, Intelligence, Surveillance, Target Acquisition, and Reconnaissance
2427	ISTC, Institute of Scientific and Technical Communications (UK)
2428	ISTS, Intel Science Talent Search
2429	ISU- Integrated Sight Unit,International Skating Union,IT[edit]
2430	it, Italian language (ISO 639-1 code)
2431	IT- InferoTemporal (neurophysiology),Information Technology, Italy (FIPS 10-4 country code; ISO 3166 digram)
2432	ita, Italian language (ISO 639-2 code)
2433	ITA, Italy (ISO 3166 trigram)
2434	ITAG, Inertial Terrain-Aided Guidance
2435	ITALY, I'll Truly Always Love You
2436	ITAS, Improved Target Acquisition Sight
2437	ITC, InferoTemporal Cortex (neurophysiology)
2438	ITCZ,(i/p) Intertropical Convergence Zone
2439	ITEC, Information Technology Exposition & Conference
2440	ITEMS, Interactive Tactical Environment Management System
2441	ITER, International Thermonuclear Experimental Reactor
2442	ITF, International Tennis Federation
2443	ITK, In The Know
2444	ITN, Independent Television News (British)
2445	ITS- Incompatible Time-sharing System,Individual Training Standards
2446	ITT, International Telephone and Telegraph (U.S.)
2447	ITTO, International Tropical Timber Organization
2448	ITU- Intent-to-Use,International Telecommunication Union (International Telegraph Union 1865-1932),IU[edit]
2449	iu, Inuktitut language (ISO 639-1 code)
2450	IUCN, International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
2451	IUSS, Integrated Undersea Surveillance System,Integrated Unit Simulation System,International Union of Soil Sciences
2452	IV, Côte d'Ivoire (FIPS 10-4 country code; from Ivory Coast),Four (in Roman numerals), IntraVenous (as in intravenous drip or intravenous therapy)
2453	IVD, Internet Video Device, intra vas device
2454	Iveco, Industrial Vehicles Corporation
2455	IVF, In Vitro Fertilisation
2456	IVI, Interchangeable Virtual Instrument
2457	IVIS,(i/a) Inter-Vehicle Information System
2458	IVL, Inter-Visibility Line
2459	IVM, In Vitro [Oocyte] Maturation
2460	IVO, In Vicinity Of
2461	IW, Information Warfare
2462	IWARS, Infantry Warrior Simulation
2463	IWC, International Whaling Commission
2464	IWW, Industrial Workers of the World
2465	IX, Nine (in Roman numerals)
2466	IXT, IntraText digital library; IntraText lexical hypertext
2467	IY, Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
2468	IZ, Iraq (FIPS 10-4 country code)
2469	J, Joule
2470	J1, Joint [Manpower &] Personnel Directorate
2471	J2, Joint Intelligence Directorate
2472	J2EE, Java 2 Platform, Enterprise ion
2473	J2ME, Java 2 Platform, Micro ion
2474	J2SE, Java 2 Platform, Standard ion
2475	J3, Joint Operations Directorate
2476	J4, Joint Logistics Directorate
2477	J5, Joint Strategic Plans & Policy Directorate
2478	J6, Joint Information Technology Directorate (Command, Control, Communications & Computer Systems)
2479	J7, Joint Operational Plans & Interoperability Directorate
2480	J8, Joint Force Structure, Resources, & Assessment Directorate
2481	J9, Joint Public Affairs Directorate (Civilian-Military Cooperation)
2482	ja, Japanese language (ISO 639-1 code)
2483	JA, Japan (FIPS 10-4 country code)
2484	JAFT, Just A Field Test
2485	JAG, Judge Advocate General Corps (military law)
2486	JAL, Japan Airlines
2487	JALLC, Joint Analysis and Lessons Learned Centre (NATO)
2488	JAM, Jamaica (ISO 3166 trigram)
2489	JAMA, Journal of the American Medical Association
2490	JANET, Joint Academic Network
2491	JANUS, Joint Academic Network Using Satellites (UK),Joint Army Navy Uniform Simulation, Joint Army-Navy Staff,Just ANother Useless Simulation (Note: The U.S. Army Janus simulation is not an acronym)
2492	JATO, Jet-Assisted Take-Off
2493	jav, Javanese language (ISO 639-2 code)
2494	JB, Junior Branch
2495	JB, Jail Bait
2496	JBFSA, Joint Blue Force Situational Awareness
2497	JCDB, Joint Common Data Base
2498	JCDS, Joint Chiefs of the Defence Staff
2499	JCIDS, Joint Capabilities Integration and Development System
2500	JCIET, Joint Combat Identification Evaluation Team

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