PowerShell/Data/Abbr/general.csv

1	ABBR	MEANING
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	2LA	Two Letter Acronym
8	2Lt	2nd Lieutenant
9	3AM	Air Mechanic 3rd Class
10	3D	Three-Dimensional
11	3G	Third-generation mobile telephone system
12	3i	Investors In Industry (venture capitalists)
13	3M	Minnesota Mining and Manufacturing Company
14	4G	Fourth-generation mobile telephone system
15	4WD	Four-wheel drive
16	5D	Five-Dimensional
17	6D	Six-Dimensional
18	7D	Seven-Dimensional
19	8D	Eight-Dimensional
20	9D	Nine-Dimensional
21	A	Ampere
22	A10	Atlantic 10 Conference
23	A1C	Airman First Class
24	A4	European standard office paper size
25	aA	Attoampere
26	AAA	administration,authorization,and authentication,American Automobile Association ('Triple-A'),anti-aircraft artillery,Amateur Athletic Association (of England),Asistencia Asesoría y Administración (Spanish,'Assistance,Consulting,and Administration'—Mexican professional wrestling promotion)
27	AAAS	American Association for the Advancement of Science
28	AAAV	Advanced Amphibious Assault Vehicle
29	AADAC	Alberta Alcohol and Drug Abuse Commission
30	AADD	Adult attention deficit disorder
31	AADT	annual average daily traffic
32	AAFES	Army and Air Force Exchange Service
33	AAIS	advanced airborne interceptor simulator
34	AAM	air-to-air missile
35	AAMOF	as a matter of fact
36	AAN	American Academy of Nursing
37	AANEAS	Anglo-Australian Near-Earth Asteroid Survey
38	AAODL	Atmospheric Aerosols and Optics Data Library
39	AAPC	Accounting and Auditing Policy Committee
40	AARP	American Association of Retired Persons (now officially known only by the initials)
41	AASPEM	advanced air-to-air system performance evaluation model
42	AAT	Australian Antarctic Territory
43	AAV	Amphibious Assault Vehicle
44	AAWC	anti-air warfare commander
45	AB	Able Seaman (both the rank and the occupation),Alberta (postal symbol)
46	ABB	ASEA Brown Boveri (Swiss-Swedish multinational company)
47	ABBA	Agnetha,Benny,Björn,Anni-Frid (Swedish pop group)
48	ABC	the first three letters of the Latin script known as the alphabet
49	ABC	abstinence, be faithful, condoms
50	ABC	Active Body Control
51	ABC	airway, breathing, circulation
52	ABC	Alcoholic Beverage Commission
53	ABC	alien big cat
54	ABC	always be careful
55	ABC	American-born Chinese
56	ABC	anti-lock brake controller
57	ABC	atomic, biological, chemical
58	ABCS	(U.S.) Army Battle Command System
59	ABET	Accreditation Board for Engineering and Technology
60	ABFIST	Advanced Bradley Full Crew Interactive Skills Trainer
61	ABGI	Addington-Barker Group International
62	ABIN	Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
63	ABL	American Basketball League
64	ABLE	AirBorne Law Enforcement (police air support unit)
65	ABMC	American Battle Monuments Commission
66	ABN	Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
67	ABPI	Association of the British Pharmaceutical Industry
68	ABRSM	Associated Board of the Royal Schools of Music
69	ABS	anti-lock braking system
70	ABSA	Amalgamated Banks of South Africa
71	ABSTRIPS	abstraction-based STRIPS
72	ABV	Alcohol by volume
73	ABW	Aruba (ISO 3166 trigram)
74	Ac	Actinium
75	AC	Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin,'before Christ'; see BC),ante cibum (Latin,'before meals'),Antigua and Barbuda (FIPS 10-4 country code),Associazione Calcio (Italian,'football (soccer) club'),A/C,Air Conditioned/Conditioning,Aircraft
76	aC	Attocoulomb
77	AC1	Aircraftman 1st Class
78	AC2	Aircraftman 2nd Class
79	ACA	Affordable Care Act,shorthand for the Patient Protection and Affordable Care Act,commonly called 'Obamacare',Airspace Control Authority,Airspace Co-ordination Area,A Current Affair
80	ACARS	Aircraft Communications Addressing and Reporting System
81	ACB	Asociación de Clubes de Baloncesto (Spanish for 'Association of Basketball Clubs')
82	ACCAC	Awdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
83	ACCD	American Coalition of Citizens with Disabilities
84	ACCS	Air Communications and Control Squadron
85	ACDA	Arms Control & Disarmament Agency
86	ACDC	Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
87	ACDT	Apple Certified Desktop Technician,Australian Central Daylight Time
88	ACES	Aerolíneas Centrales de Colombia (Spanish,'Central Colombian Airlines'),Auxiliary Campus Enterprises and Services of Alfred State College
89	ACF	Administration for Children and Families,American Car and Foundry,American Culinary Federation
90	ACHT	Average Call Hold Time
91	ACINT	Acoustic Intelligence
92	ACK	Acknowledge (telecommunications; cf. NAK)
93	ACL	Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
94	ACLJ	American Center for Law and Justice
95	ACLOS	Automatic CLOS (missile control system)
96	ACLS	American Council of Learned Societies
97	ACLU	American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
98	ACM	many,including Association for Computing Machinery; see entry
99	ACMC	(U.S.) Assistant Commandant of the Marine Corps
100	ACN	Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
101	ACNA	Anglican Church in North America
102	ACO	Airspace Control Order
103	ACOBA	Advisory Committee on Business Appointments
104	ACOG	American College of Obstetricians and Gynecologists
105	ACOM	(U.S.) Atlantic Command
106	ACORN	Association of Community Organizations for Reform Now
107	ACP	African,Caribbean and Pacific Group of States,Air Control Point
108	ACR	Advanced Concepts and Requirements
109	ACRI	African Crisis Initiative
110	ACRT	Advanced Concepts Research Tool simulator
111	ACS	Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
112	ACSC	Army Command and Staff College (various nations)
113	ACST	American Cooperative School of Tunis
114	ACST	Australian Central Standard Time
115	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
116	ACTD	Advanced Concept Technology Demonstration
117	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)
118	ACTU	Australian Council of Trade Unions
119	ACU	American Conservative Union
120	ACUF	Advisory Committee on Undersea Features,American Conservative Union Foundation
121	AD	Air Defence,Andorra (ISO 3166 digram),Anno Domini (Latin for 'In the year of our Lord')
122	ADA	Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
123	ADAC	Allgemeiner Deutscher Automobil-Club (German for 'General German Automobile Club')
124	ADAGE	Air Defense Air to Ground Engagement (simulation)
125	ADAP	AIDS Drug Assistance Program
126	ADAS	Asiago-DLR Asteroid Survey
127	ADAT	Alesis Digital Audio Tape (recording format)
128	ADATS	Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
129	ADB	Asian Development Bank
130	ADC	Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
131	ADD	Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
132	ADDIE	Analyze Design Develop Implement and Evaluate
133	ADDNS	Advanced Deployable Day/Night Simulation
134	ADGB	Air Defence of Great Britain
135	ADHD	Attention-Deficit Hyperactivity Disorder
136	ADHS	Attention-Deficit Hyperactivity Syndrome
137	ADI	Acceptable/Allowable Daily Intake
138	ADIZ	Air Defence Identification Zone
139	ADL	Anti-Defamation League
140	ADM	Administrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
141	ADOA	Air Defence Operations Area
142	ADP	Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
143	ADRG	Arc-second Raster Chart (ARC) Digitized Raster Graphics
144	ADS	Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
145	ADSR	Attack,Decay,Sustain,Release (sound envelope specification)
146	ADT	Atlantic Daylight Time (UTC−3 hours)
147	ADTB	Army Doctrine and Training Bulletin
148	ADW	Air Defence Warning
149	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, Arts & Entertainment Network,the original name for the U.S. TV channel now known as A&E Network
150	AEDT	Australian Eastern Daylight Time
151	AEF	American Expeditionary Force
152	AEGIS	Airborne Early warning Ground environment Interface Segment (fake etymology)
153	AESR	Aeronautical Equipment Service Record
154	AEST	Australian Eastern Standard Time
155	aet	After extra time (Football)
156	AEW	Airborne Early Warning,Airborne Electronic Warfare
157	AF	Afghanistan (FIPS 10-4 country code; ISO 3166 digram),Air Force,As f*ck
158	aF	Attofarad
159	AFA	U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
160	AFAIC	As Far As I'm Concerned
161	AFAICT	As Far As I Can Tell
162	AFAIK	As Far As I Know
163	AFAIR	As Far As I Remember/Recall
164	AFAM	Associazione Friulana di Astronomia e Meteorologia (Italian,'Friuli Association of Astronomy and Meteorology'),Department of African and Afro-American Studies,University of North Carolina at Chapel Hill — notable for its links to the school's academic-athletic scandal in the 2010s
165	AFATDS	Advanced Field Artillery Tactical Data System
166	AFCEA	Armed Forces Communications and Electronics Association
167	AFDB	African Development Bank
168	AFES	Automatic Fire Extinguishing System
169	AFG	Afghanistan (ISO 3166 trigram)
170	AFI	French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977),'Agencia Federal de Investigaciónes' (México)
171	AFIST	Abrams Full Crew Interactive Skills Trainer
172	AFJ	April Fool's Joke
173	AFK	Away From Keyboard (Internet chat abbreviation)
174	AFLAC	American Family Life Assurance Company of Columbus
175	AFO	Association of Field Ornithologists
176	AFOSR	U.S. Air Force Office of Scientific Research
177	AFP	Agence France-Presse (French,'French Press Agency'), Australian Federal Police
178	AFQT	Armed Forces Qualification Test
179	AFRC	Air Force Reserve Command
180	AFRL	Air Force Research Laboratory
181	AFROTC	Air Force Reserve Officer Training Corps
182	AFRTS	Armed Forces Radio and Television Service
183	AFSC	U.S. Air Force Staff College (obsolete; replaced with JFSC), U.S. Air Force Systems Command
184	AFSCN	U.S. Air Force Satellite Control Network
185	AFSPC	Air Force Space Command
186	AFT	American Farmland Trust
187	AFV	armoured fighting vehicle
188	AG	air gunner,Aktiengesellschaft (German,'incorporated'),Algeria (FIPS 10-4 country code),Antigua and Barbuda (ISO 3166 digram),Assemblies of God
189	ag	Attogram
190	Ag	Silver (Latin for 'argentum')
191	AGA	AB Gas-accumulator ('ah-gah',Swedish company),Advanced Graphics Architecture
192	AGARD	Advisory Group for Aerospace Research and Development
193	AGARDograph	Advanced Guidance for Alliance Research and Development publication
194	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
195	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
196	AGC	Adjutant General's Corps (British Army)
197	AGDC	Australian Game Developers' Conference
198	AGI	Auxiliary Group Intelligence
199	AGM	Annual General Meeting
200	AGN	Active Galactic Nucleus
201	AGO	Angola (ISO 3166 trigram)
202	AGP	Accelerated Graphics Port
203	AGRICOLA	Agriculture Online Access
204	AGS	Alaska Ground Station (LandSat)
205	AGTS	Advanced Gunnery Training System
206	AGU	American Geophysical Union
207	AGW	Autonomous Guided Weapon
208	Ah	Ampere-hour
209	AH	Attack Helicopter
210	aH	Attohenry
211	AHA	American Heart Association
212	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
213	AHEC	Australian Health Ethics Committee
214	AHPCRC	Army High Performance Computing Research Center
215	AHQ	Air Headquarters
216	AHRQ	Agency for Healthcare Research and Quality
217	AHS	American Housing Survey
218	AI	Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence,Anguilla (ISO 3166 digram)
219	AIA	Aerospace Industries Association,American Institute of Architects,Anguilla (ISO 3166 trigram)
220	AIAA	American Institute of Aeronautics and Astronautics
221	AIC	African Independent Church,Animal Identification Coordinator
222	AICD	Australian Institute of Company Directors
223	AICMFP	And I Claim My Five Pounds
224	AID	U.S. Agency for International Development
225	AIDS	Acquired Immune Deficiency Syndrome
226	AIM	Australian Institute of Management
227	AIMP	Aurora Incremental Modernization Project
228	AIPAC	American Israel Public Affairs Committee
229	AIR	Aircraft Inventory Record
230	AIRFA	American Indian Religious Freedom Act
231	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
232	AIS	Australian Institute of Sport,Automatic Identification System
233	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
234	aJ	Attojoule
235	AJ	Azerbaijan (FIPS 10-4 country code)
236	Ajax	Asynchronous JavaScript And XML
237	AJD	Astronomical Julian day
238	AJP	Allied Joint Publication
239	AJPW	All Japan Pro Wrestling
240	AK	Alaska (postal symbol)
241	aK	Attokelvin
242	AKA	Above knee amputation (orthopaedic usage)
243	AKDT	Alaska Standard Daylight Saving Time (UTC−8 hours)
244	AKP	Adalet ve Kalkınma Partisi (Turkish,'Justice and Development Party')
245	AKST	Alaska Standard Time (UTC−9 hours)
246	AL	Alabama (postal symbol),Albania (FIPS 10-4 country code; ISO 3166 digram),Anno Lucis (Latin,'Year of Light',in Masonic tradition,most often seen on plaques bearing the founding dates of buildings,in years AD and years AL)
247	Al	Aluminium
248	aL	Attolitre
249	ALA	Åland Islands (ISO 3166 trigram)
250	ALAP	As Long/Late As Possible
251	ALARM	Air-Launched Anti-Radar Missile
252	ALB	Albania (ISO 3166 trigram)
253	ALD	Accounting Line Designator (nuclear weapon targeting)
254	ALERT	Advanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
255	ALF	Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
256	ALG	Algeria (IOC and FIFA trigram,but not ISO 3166)
257	ALGOL	ALGOrithmic Language
258	ALPA	Air Line Pilots Association
259	ALS	Amyotrophic Lateral Sclerosis
260	ALSHS	Abraham Low Self-Help Systems
261	ALSP	Aggregate Level Simulation Protocol
262	ALTE	Association of Language Testers in Europe
263	Am	Americium
264	AM	Amplitude Modulation and Ante Meridiem; see entry,Armenia (FIPS 10-4 country code; ISO 3166 digram)
265	AM1	Airman 1st class
266	AMCB	U.S. Army/Marine Corps Board
267	AMFOM	Advanced Missile Fly Out Model
268	AMFR	Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
269	AMFRS	Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
270	AML	Acute Myeloid Leukaemia
271	AMLCD	Active Matrix Liquid Crystal Display
272	AMLO	Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
273	AMO	Atlantic Multidecadal Oscillation
274	AMOLED	Active-matrix organic light-emitting diode
275	AMOS	Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
276	AMP	Adenosine MonoPhosphate,Automated Mission Planner
277	AMRAAM	Advanced Medium-Range Air-to-Air Missile
278	AMRDEC	U.S. Aviation & Missile Research,Development,& Engineering Center
279	AMS	Agriculture Marketing Service,American Mathematical Society
280	AMSAA	U.S. Army Materiel Systems Analysis Activity
281	AMSO	U.S. Army Model and Simulation Office
282	AMSU	Advanced Microwave Sounding Unit
283	AMTE	UK Admiralty Marine Technology Establishment (1977-1984)
284	AN	Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram)
285	aN	Attonewton
286	ANA	Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body,Australian National Airways,Australian Natives' Association
287	ANC	African National Congress
288	AND	Andorra (ISO 3166 trigram)
289	ANFO	Ammonium nitrate/fuel oil (explosive)
290	ANGLiCo	Air/Naval Gunfire Liaison Company
291	ANL	Argonne National Laboratory
292	ANM	Acoustic Noise Monitor
293	ANOVA	ANalysis Of VAriance
294	ANS	Applied and Natural Sciences
295	ANSI	American National Standards Institute
296	ANT	Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram,but not ISO 3166 or FIFA)
297	ANTM	America's Next Top Model
298	ANTY	Acronyms,No Thank You
299	ANWR	Arctic National Wildlife Refuge /ˈænwɑr/
300	ANZ	Australia and New Zealand Banking Group
301	ANZAC	Australian and New Zealand Army Corps
302	AO	Angola (FIPS 10-4 country code; ISO 3166 digram),Approach Officer (submarine),Area of Operations
303	AOC	Air Operations Centre,Air Officer Commanding
304	AOD	Adrenalin O.D. (punk rock band)
305	AOI	Angle Of Incidence (Arab Organization for Industrialization)
306	AOL	America OnLine
307	AOR	Area of Responsibility
308	AOSTH	Adventures of Sonic the Hedgehog
309	AOTS	Attack of the Show!
310	AOU	American Ornithologists' Union
311	AP	Advanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
312	APB	All Points Bulletin (police jargon)
313	APEC	Asia Pacific Economic Cooperation
314	APEDS	AMSAA Performance Estimates Data System
315	APEX	Applied Physics Express
316	APHA	American Public Health Association
317	APHIS	Animal and Plant Health Inspection Service
318	APL	Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
319	APOD	Aerial Port (Airport) Of Debarkation
320	APOE	Aerial Port (Airport) Of Embarkation
321	APOLLO	Apache Point Observatory Lunar Laser-ranging Operation
322	APP	Allied Procedural Publication
323	APR	Annual Percentage Rate
324	AQIM	Al-Qaeda in the Islamic Maghreb
325	Ar	Argon
326	ARAG	Advanced Research and Assessment Group
327	ARB	Administrative Review Board
328	ARBA	Army Review Boards Agency
329	ARCA	Automobile Racing Club of America
330	ARCENT	United States Army Central Command
331	ARDA	Advanced Research and Development Activity (became DTO 2006)
332	ARF	ASEAN Regional Forum
333	ARG	Argentina (ISO 3166 trigram)
334	ARH	Armed Reconnaissance Helicopter
335	ARNet	Acquisition Reform Network
336	ARP	Applied Research Programme
337	ARPA	Advanced Research Projects Agency
338	ARRC	ACE Rapid Reaction Corps
339	ARRF	Allied Rapid Reaction Force
340	ARRL	American Radio Relay League
341	ARSC	Arctic Region Supercomputing Center
342	ARSPACE	U.S. Army Space Command
343	ARTCC	Air Route Traffic Control Center
344	ARWG	Army Research Working Group
345	AS	ActionScript
346	AS	American Samoa (postal symbol; ISO 3166 digram),Australia (FIPS 10-4 country code),Assam / Asom (Indian state code)
347	As	Arsenic
348	aS	Attosiemens
349	ASA	AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
350	ASAP	As Soon As Possible
351	ASARS	Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
352	asbl	association sans but lucratif (French 'Non-profit organisation')
353	ASBO	Anti-Social Behaviour Order
354	ASCAP	American Society of Composers,Authors,and Publishers
355	ASCC	Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
356	ASCII	American Standard Code for Information Interchange
357	ASD	(U.S.) Assistant Secretary of Defense,autism spectrum disorder
358	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
359	ASEAN	Association of Southeast Asian Nations
360	ASFAR	Americans for a Society Free of Age Restrictions
361	ASG	Area Support Group
362	ASIC	Australian Securities and Investments Commission,Aviation Security Identification Card
363	ASICS	Anima sana in corpore sano (Latin for 'A sound mind in a sound body') (athletic shoe manufacturer)
364	ASIO	Australian Security Intelligence Organisation,Audio stream input output
365	ASIP	Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
366	ASL	Above Sea Level,American Sign Language (also known as Ameslan),'Age,Sex,Location?' (Internet slang)
367	ASM	Air-to-Surface Missile,American Samoa (ISO 3166 trigram),American Society for Metals,American Society for Microbiology
368	ASMB	American Society for Matrix Biology,Adult Swim Message Board
369	ASME	American Society of Mechanical Engineers,American Society of Magazine ors
370	ASMP	Air-Sol Moyenne Portée missile (French 'Medium-range air to surface'),Asymmetric multiprocessing
371	ASN	Associate of Science in Nursing
372	ASOC	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
373	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
374	ASPI	Australian Strategic Policy Institute
375	ASR	Alkali-silica reaction,Anti Slip Regulation
376	ASRAAM	Advanced Short-Range Air-to-Air Missile
377	ASSC	Association for the Scientific Study of Consciousness
378	AST	Atlantic Standard Time (UTC−4 hours)
379	ASTIA	Armed Services Technical Information Agency
380	ASTM	American Society for Testing and Materials
381	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
382	ASUW	AntiSUrface Warfare
383	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
384	ASVEL	Association Sportive Villeurbanne Éveil Lyonnais (Association Sportive is French for 'Sporting Association'; the club was founded through the merger of AS Villeurbanne and Éveil Lyonnais)
385	ASW	AntiSubmarine Warfare
386	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
387	ASX	Advanced Stream Redirector,Australian Securities Exchange
388	AT	Anti-Tank,Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
389	At	Astatine
390	aT	Attotesla
391	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
392	ATAC	Air Transportable Acoustic Communications
393	ATACMS	Army TACtical Missile System
394	ATAPI	Advanced Technology Attachment Packet Interface
395	ATAS	Air-To-Air Stinger (missile)
396	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
397	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
398	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
399	ATCCIS	Army Tactical Command and Control Information System
400	ATESS	Aerospace and Telecommunications Engineering Support Squadron
401	ATF	French Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
402	ATG	Antigua and Barbuda (ISO 3166 and FIFA trigram)
403	ATGM	Anti-Tank Guided Missile
404	ATGW	Anti-Tank Guided Weapon
405	ATK	Attack
406	ATL	Atlanta,Georgia,the largest city and capital of Georgia
407	ATLAS	All-Terrain Lifter Army System,Assessment Tool for LAnd Systems
408	ATM	Automated Teller Machine,Asynchronous Transfer Mode,At The Moment
409	ATN	Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
410	ATO	Air Tasking Order,Australian Taxation Office
411	ATP	Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
412	ATSD	(U.S.) Assistant Secretary of Defense
413	ATSDR	Agency for Toxic Substances and Disease Registry
414	ATV	All-Terrain Vehicle
415	ATWA	Air,Trees,Water,Animals
416	AU	African Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
417	Au	Gold (Latin 'Aurum')
418	AUC	Ab Urbe Condita / Anno Urbis Conditae (Latin for 'from the founding of the city' / 'in the year since the founding of the city') (of Rome),Area Under the Curve (concentration time curve; medicine)
419	AUS	Australia (ISO 3166 trigram)
420	AUSCANNZUKUS	Australia,Canada,New Zealand,United Kingdom,United States (security designation)
421	Auslan	Australian Sign Language
422	AUT	Austria (ISO 3166 trigram)
423	AUTL	Army Universal Task List
424	AV	Anguilla (FIPS 10-4 territory code),Audio-Visual,Aviation
425	Av	Aperture value (photographic mode)
426	aV	Attovolt
427	AVA	American Viticultural Area
428	AVB	Audio Video Bridging
429	AVDLR	Aviation Depot Level Repair
430	AVGP	Armoured Vehicle, General Purpose
431	AVIM	Aviation Intermediate Maintenance
432	AVLB	Armoured Vehicle Launched Body
433	AVM	Air Vice-Marshal, Arteriovenous malformation
434	AVO	Apprehended Violence Order
435	AVP	Arubaanse Volkspartij
436	AVP	Association of Volleyball Professionals
437	AVRE	Armoured Vehicle Royal Engineers
438	AVTB	Armoured Vehicle Test Bed,Aviation Test Bed
439	AVUM	Aviation Unit Maintenance
440	AVVO	Acute Vaginal Venereal Outbreak
441	AW	Aruba (ISO 3166 digram)
442	aW	Attowatt
443	AWA	American Wrestling Association
444	AWC	Air Warfare Centre
445	AWD	All Wheel Drive
446	AWE	Advanced Warfighting Experiment
447	AWP	Awaiting Parts (SM&R code)
448	AWSIM	Air Warfare SIMulation
449	AWST	Australian Western Standard Time
450	AWW	Above Water Warfare
451	AX	Åland Islands (ISO 3166 digram)
452	AXP	Ambulance eXchange Point
453	AY	Antarctica (FIPS 10-4 territory code)
454	AYBABTU	All Your Base Are Belong To Us
455	AYU	As Yet Unknown
456	AZ	Arizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
457	AZE	Azerbaijan (ISO 3166 trigram)
458	AZUR	Actions en zone urbaine (French for: Urban Operations)
459	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 , 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]
460	BB	Barbados (ISO 3166 digram; FIPS 10-4 country code),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
461	BBB	Better Business Bureau,Blood-brain barrier
462	BBC	Breeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
463	BBL	Be Back Later,Bird Banding Laboratory,British Basketball League
464	BBN	Bolt,Beranek and Newman
465	BBQ	Barbecue
466	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)
467	BBYO	B'nai B'rith Youth Organization
468	BC	Before Christ,Blind Copy (in emailers),Boston College,Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
469	BCA	Bachelor of Computer Application,Black Coaches & Administrators
470	BCC	Blind Carbon Copy
471	BCCI	Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
472	BEA	Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
473	BEL	Belgium (ISO 3166 trigram)
474	BEN	Benin (ISO 3166 trigram)
475	BEO	Banquet Event Order
476	BERC	Business Environmental Resource Center
477	BER	Bit Error Rate
478	BH	Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code)
479	BHR	Bahrain (ISO 3166 trigram)
480	BNF	Backus-Naur Form (computing), British National Formulary
481	BNICE	Biological,Nuclear,Incendiary,Chemical,and Explosive Agents
482	BNP	British National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
483	BNS	Bank of Nova Scotia
484	BNSF	Burlington Northern Santa Fe (also AAR reporting mark)
485	BO	Back Orifice,Belarus (FIPS 10-4 country code),Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
486	BOAC	British Overseas Airways Corporation (predecessor of British Airways)
487	BoAML	Bank of America Merrill Lynch
488	BOC	British Orthodontic Society, British Oxygen Company
489	BÖC	Blue Öyster Cult
490	BODMAS	Brackets,Orders,Division,Multiplication,Addition,Subtraction
491	BOFH	Bastard Operator From Hell
492	BOGA	Bend Over and Grab Ankles
493	BOGOF	Buy One,Get One Free
494	BOGs	Bunch of Guys
495	BOI	Balance Of Investment,Basis Of Issue
496	BOL	Bolivia (ISO 3166 trigram)
497	BOM	Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
498	BOPD	Barrel of Oil Per Day
499	BOS	Battlefield Operating System
500	BOT	Balance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
501	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
502	BPV	Battlefield Planning Visualization,Bovine papillomavirus
503	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)
504	BR	Brazil (ISO 3166 digram; FIPS 10-4 country code) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
505	BRA	Brazil (ISO 3166 trigram)
506	BRAG	Bicycle Ride Across Georgia
507	BRASS	Breathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
508	BRIC	Brazil, Russia, India, and China
509	BRICS	Brazil, Russia, India, China, and South Africa
510	BSA	Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
511	BSatCoP	Benjamin Sniddlegrass and the Cauldron of Penguins
512	BSE	Bovine Spongiform Encephalopathy (better known as mad cow disease)
513	BSN	Baloncesto Superior Nacional (Spanish,'National Superior Basketball'; top Puerto Rican league),Bank Simpanan Nasional (Malay,'National Savings Bank'; government-owned Malaysian bank)
514	BSNL	Bharat Sanchar Nigam Limited,Bachelor of Science in Nursing
515	BSoD	Blue Screen of Death (distinct from BSD)
516	BSP	Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
517	BST	Binary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
518	BSW	British Standard Whitworth (screw thread)
519	BSX	Bendigo Stock Exchange
520	BT	Baal teshuva (Hebrew,'master of repentance') ,used to describe a Jew who adopts Orthodox Judaism as an adult,Bathythermograph,Bhutan (FIPS 10-4 country code; ISO 3166 digram),BitTorrent,British Telecom,the former name of the company now known as BT Group,BTDT , Been There,Done That,Bti , Bacillus thuringiensis israelensis,BTID , Battlefield Target Identification Device,BTIS , Battlefield Target Identification System
521	Bt	Baronet,Bacillus thuringiensis
522	BTO	Built To Order
523	BTP	British Transport Police
524	BTR	Bronetransporter (БТР = Бронетранспортер '(Heavy) Armoured (Personnel) Transporter')
525	BTU	British Thermal Unit
526	BTW	By The Way
527	BU	Bulgaria (FIPS 10-4 country code) -,Burma (ISO 3166 digram; obsolete since 1989)
528	BUAV	British Union for the Abolition of Vivisection
529	BUG-E	Battlefield Universal Gateway Equipment ('buggy')
530	BUNO	Bureau Number (aircraft serial number)
531	BUR	Burma (ISO 3166 trigram; obsolete since 1989)
532	BV	Background Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
533	BVD	Bradley,Voorhees & Day (underwear manufacturer)
534	BVR	Beyond Visual Range
535	BVT	Bouvet Island (ISO 3166 trigram)
536	B&W	Babcock & Wilcox, Black and White, Bowers & Wilkins
537	BW	Bring Wedges (ISO digram)
538	BW	Botswana (ISO 3166 digram)
539	BWA	Botswana (ISO 3166 trigram)
540	BWARS	Bees,Wasps & Ants Recording Society
541	BWC	Biological and Toxin Weapons Convention
542	BWR	Boiling-Water Reactor
543	BX	Base eXchange
544	BY	Burundi (FIPS 10-4 country code), Belarus (ISO 3166 digram), Bavaria
545	BYOB	Bring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
546	BYOC	Bring Your Own Computer (play on BYOB)
547	BYOF	Bring Your Own Flask
548	BYS	Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
549	BYU	Brigham Young University
550	BZ	Belize (ISO 3166 digram)
551	BZP	Benzylpiperazine
552	C	Carbon, Coulomb, One Hundred (in Roman numerals)
553	c	Centi
554	C2C	Consumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
555	c2c	the British rail company formerly known as LTS Rail
556	Ca	Calcium
557	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
558	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
559	CAAT	Campaign Against Arms Trade,Center for Alternatives to Animal Testing
560	CAC	California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
561	CACM	Central American Common Market
562	CACM	Communications of the ACM
563	CADCAM	Computer-Aided Design/Computer-Aided Manufacturing
564	CADMID	Concept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
565	CADPAT	CAnadian Disruptive PATtern
566	CAE	Canadian Aviation Electronics (originally),Certificate in Advanced English
567	CAEn	Close Action Engagement (constructive simulation)
568	CAF	Central African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
569	CAFAD	Combined Arms For Air Defence
570	CAFDE	Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
571	CAFE	Corporate Average Fuel Economy standard
572	CAI	Computer Assisted Instruction
573	CAIR	Council on American-Islamic Relations
574	CALABARZON	A region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
575	CALL	Center for Army Lessons Learned
576	CALM	Communications,Air-interface,Long and Medium range
577	CalPERS	California Public Employees' Retirement System
578	Caltrans	California Department of Transpotation
579	CAM	Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
580	CAMRA	CAMpaign for Real Ale
581	CAN	Canada (ISO 3166 trigram)
582	CANDU	CANada Deuterium Uranium (nuclear reactor design)
583	Canola	Canadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
584	CAPES	CAPability Evaluation System,Combined Arms Planning and Execution System
585	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)
586	CARMONETTE	Computerized Monte Carlo Simulation
587	CARP	Computed Air Release Point
588	CART	Championship Auto Racing Teams (now defunct)
589	CAS	Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
590	CASA	Civil Aviation Safety Authority
591	CASE	Cellular ammunition storage equipment,Computer-Aided Software Engineering
592	CASS	Command Activated Sonobuoy System
593	CASTFOREM	Combined Arms and Support Task FORce Evaluation Model
594	CASTOR	Canadian Automatic Small Telescopes for Orbital Research
595	CAT	Community Acceptance Testing
596	CATK	Counterattack
597	CATS	Computer Active Technology Suspension
598	CATT	Combined Arms Tactical Trainer
599	CAV	Cavalry
600	CAVOK	Ceiling And Visibility OK ('Kav-okay')
601	CAW	Canadian Auto Workers (trade union)
602	CB	Citizens' Band radio,Cambodia (FIPS 10-4 country code)
603	CBASSE	Commission on Behavioral And Social Sciences and Education ('sea bass')
604	CBC	Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
605	CBE	Commander of the Order of the British Empire,Cab Beside Engine (see truck)
606	CBF	Confederação Brasileira de Futebol (Portuguese,'Brazilian Football Confederation')
607	CBGB	Country,Blue Grass,and Blues (former New York City nightclub)
608	CBLA	Comparative bullet lead analysis
609	CBM	Canadian Baptist Ministries
610	CBM	Commodore Business Machines
611	CBML	Coalition Battle Management Language
612	CBN	CardsApp Brand Number
613	CBOL	Consortium for the Barcode of Life
614	CBOT	Chicago Board of Trade
615	CBR	Case-Based Reasoning
616	CBRN	Chemical,Biological,Radiological,or Nuclear (weapon or event)
617	CBRNE	Chemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
618	CBS	Columbia Broadcasting System,Corps Battle Simulation
619	CBUS	Columbus,Ohio
620	CC	carbon copy
621	CCA	Counter Command Activity
622	CCC	Canterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
623	CCCP	Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
624	CCD	Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
625	CCF	Cartoon Cartoon Fridays
626	CCG	Canadian Coast Guard,Collectible Card Game
627	CCGC	Canadian Coast Guard Cutter,Canadian Coast Guard College
628	CCGH	Canadian Coast Guard Hovercraft
629	CCGS	Canadian Coast Guard Ship,Christ Church Grammar School
630	CCH	Computer-Controlled Hostile
631	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)
632	CCII	Command and Control Information Infrastructure,Community Capital Investment Initiative
633	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
634	CCIT	Comité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
635	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)
636	CCK	Cholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
637	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
638	CCOC	Canadian Children's Opera Chorus,Crosley Car Owners Club
639	CCOP	Coalition Common Operating/Operational Picture
640	CCP	Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
641	CCPA	Consumer Credit Protection Act
642	CCR	Creedence Clearwater Revival
643	CCRAp	Canadian Conservative Reform Alliance party
644	CCRP	Command and Control Research Program
645	CCRTS	Command and Control Research and Technology Symposium
646	CCSCS	Consultative Committee for Space Data Systems
647	CCSCS	Coordinadora de Centrales Sindicales del Cono Sur
648	CCSIL	Command and Control Simulation Interface Language ('cecil')
649	CCSK	Cyclic Code Shift Keying
650	CCT	Current Commitments Team
651	Cd	Cadmium
652	cd	Candela
653	CD	Compact Disc
654	CD1	Cluster of Differentiation 1 (a small gene family)
655	CDA	UK Centre for Defence Analysis
656	CDD	Capabilities Development Document
657	CDE	Chemical Defence Equipment
658	CDIAC	Carbon Dioxide Information Analysis Center ('see-dee-ack')
659	CDipAF	Certified Diploma in Accounting and Finance
660	CDL	Commercial driver's license
661	CDM	Clean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
662	CDMA	Code Division Multiple Access
663	CDMSII	Cryogenic Dark Matter Search II
664	Cdr	Commander
665	CDT	Central Daylight Time (UTC−5 hours)
666	Cdt	Commandant
667	Ce	Cerium
668	CE	Christian/Common Era
669	CEA	Campaign Effectiveness Analysis
670	CECOM	U.S. Army Communications and Electronics Command
671	CEDEX	Courrier d'entreprise à distribution exceptionnelle (French,'Company Mail with Exceptional Distribution'; 'exceptional' refers to the volume of mail)
672	CEGEP	Collège d'enseignement général et professionnel (French,'College of General and Vocational Education')
673	CEI	Competitive Enterprise Institute
674	CENTCOM	United States Central Command
675	CENTO	Central Treaty Organization (Baghdad Pact)
676	CENZUB	Centre d'entraînement aux actions en zone urbaine (French,'Urban Operations Training Centre')
677	CEO	Chief Executive Officer
678	CEP	Circular Error Probable
679	CEPT	Conférence européenne des administrations des postes et des télécommunications (French,'European Conference of Postal and Telecommunications Administrations')
680	CERCLA	U.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
681	CERDEC	U.S. Communications-Electronics Research,Development and Engineering Center
682	CERGA	Centre de recherches en géodynamique et astrométrie (French,'Astrometry and Geodynamics Research Centre')
683	CERN	Centre européen pour la recherche nucléaire (French,'European Organization for Nuclear Research')
684	CERT	Computer Emergency Response Team
685	CESS	Centre for Earth Science Studies (India)
686	CEST	Central European Summer Time
687	CET	Central European Time
688	CEWC	Council for Education in World Citizenship
689	Cf	Californium
690	CF	Canadian Forces,Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
691	CFA	Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
692	CFAR	Christine's,Federal Acquisition Regulation
693	CFC	ChloroFluoroCarbon,Canadian Fish Company
694	CFES	Continuous Flow Electrophoresis System
695	CFFZ	Call For Fire Zone
696	CFG	Context-free grammar,Control flow graph
697	CFHT	Canada-France-Hawaii Telescope
698	CFI	Center for Inquiry (CSICOP)
699	CFL	Canadian Football League,Co-ordinated Fire Line
700	CFLCC	Coalition Forces Land Component Command
701	CFM	Certified Facilities Manager
702	CFO	Chief Financial Officer
703	CFP	Call for papers, College Football Playoff, Common Fisheries Policy (EU)
704	CFR	Code of Federal Regulations,Căile Ferate Române (Romanian,'Romanian Railways')
705	CFRP	Carbon fibre reinforced plastic
706	CFS	Chronic Fatigue Syndrome
707	CFSP	Common Foreign and Security Policy
708	CFU	Colony Forming Unit in Microbiology
709	CFV	Cavalry Fighting Vehicle
710	CFZ	Critical Friendly Zone
711	CG	Client Group,Computer Graphics,Controls Group,Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
712	CGH	Comparative Genomic Hybridisation
713	CGIG	Cross-Government Implementation Group
714	CGO	Republic of the Congo (IOC and FIFA trigram,but not ISO 3166)
715	CGS	Chief of the General Staff
716	CGT	Capital Gains Tax
717	ch	ch(L) is used to denote the Chern character of a line bundle
718	CH	Chieftain tank,China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
719	CHAMPUS	(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
720	CHAOS	Cambridge Heart Anti-Oxidant Study
721	CHAPS	Clearing House Automated Payment System
722	CHDK	Canon Hack Development Kit (Canon camera firmware hack)
723	CHE	Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
724	CHI	Columbia Helicopters,Inc
725	CHiP	California Highway Patrol
726	CHIPS	Cosmic Hot Interstellar Plasma Spectrometer
727	CHL	Chile (ISO 3166 trigram)
728	CHLA	Core Historical Literature of Agriculture
729	CHN	China (ISO 3166 trigram)
730	CHOGM	Commonwealth Heads of Government Meeting
731	CHPSO	California Hospital Patient Safety Organization
732	CHRS	Canadian Heart Rhythm Society
733	CHT	Certified Hand Therapist
734	CI	Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
735	Ci	Curie
736	CIA	U.S. Central Intelligence Agency, Cairo International Airport, Culinary Institute of America
737	CIAO	Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
738	CIB	Complete In Box (Internet auction/trading listings)
739	CIBC	Canadian Imperial Bank of Commerce
740	CICS	Customer Information Control System (IBM mainframe software; 'kicks' or 'C-I-C-S')
741	CID	Certified Interior Designer
742	CIEF	Comité international d'enregistrement des fréquences (International Frequency Registration Board)
743	CIF	Cost,Insurance,and Freight (Paid) (shipping)
744	CIMMYT	Centro Internacional de Mejoramiento de Maíz Y Trigo (Spanish,'International Maize and Wheat Improvement Center')
745	CINC	Commander in Chief
746	CINEOS	Campo Imperatore Near-Earth Object Survey
747	CIO	Chief information officer,Congress of Industrial Organizations
748	CIPE	(European) Centre for International Political Economy
749	CIR	(Commander's) Critical Information Requirements
750	CIR	Corotating Interaction Region
751	CIS	Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
752	CISA	(U.S.) C4I Integration Support Activity
753	CISB	Complete In Sealed Box (Internet auction/trading listings)
754	CISPR	Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
755	CISSP	Certified Information Systems Security Professional
756	CITES	Convention on International Trade in Endangered Species (of Wild Fauna and Flora) ('sigh-tease')
757	CIV	Côte d'Ivoire (ISO 3166 trigram)
758	CIVETS	Colombia,Indonesia,Vietnam,Egypt,Turkey,South Africa (economics)
759	CIVPOP	Civilian Population
760	CIWS	Close-In Weapon System
761	CJ	Cayman Islands (FIPS 10-4 country code),Criminal Justice
762	CJC	Canadian Jewish Congress,Cold Junction Compensation
763	CJCS	Chairman of the Joint Chiefs of Staff
764	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
765	CJO	Chief of Joint Operations
766	CJTF	Combined Joint Task Force
767	CK	Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
768	CKA	commonly known as, Canada Kicks Ass
769	CKND	Codename: Kids Next Door
770	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
771	Cl	Chlorine
772	CLA	Clutterers Anonymous
773	CLEC	Competitive Local Exchange Carrier
774	CLEMARS	California Law Enforcement Mutual Aid Radio System
775	CLIC	Compact LInear Collider
776	CLO	Cornell Lab of Ornithology
777	CLOS	Command to Line-Of-Sight (missile control system)
778	CLPFC	CentroLateral PreFrontal Cortex
779	CLRP	College Loan Repayment Program
780	CM	Cameroon (FIPS 10-4 country code; ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
781	Cm	Curium
782	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
783	CMHC	Canada Mortgage and Housing Corporation
784	CMIIAW	Correct me if I am wrong
785	CMIS	Common management information service
786	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
787	CMLL	Consejo Mundial de Lucha Libre (Spanish,'Worldwide Wrestling Council'—Mexican professional wrestling promotion)
788	CMM	Capability Maturity Model
789	CMMC	Corps Materiel Management Centre
790	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
791	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
792	CMP	Common [Operating/Operational] Maritime Picture
793	CMPD	Charlotte Mecklenburg Police Department
794	CMPD	Chronic Myeloproliferative Disease
795	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
796	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
797	CMT	Country Music Television
798	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
799	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)
800	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
801	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
802	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
803	CNBC	Consumer News and Business Channel
804	CND	Campaign for Nuclear Disarmament,Computer Network Defence
805	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
806	CNF	Cost and Freight
807	CNI	Clinical Nursing Intern
808	CNI	Communications,Navigation and Identification
809	CNN	Cable News Network,Cellular Nonlinear Network
810	CNV	Copy-Number Variable (genetics)
811	Co	Cobalt
812	COB	Close Of Business [day]
813	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
814	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
815	CoDA	Co-Dependents Anonymous
816	COGENT	Cognitive Objects within a Graphical EnviroNmenT
817	COIL	Chemical Oxygen Iodine Laser
818	COK	Cook Islands (ISO 3166 trigram)
819	COL	Colombia (ISO 3166 trigram)
820	COLA	Cost Of Living Adjustment
821	CONAD	U.S. Continental Air Defense Command
822	CONMEBOL	Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for 'South American Football Confederation')
823	CONUS	Continental United States
824	COO	Chief Operating Officer
825	COPE	U.K. Committee On Publication Ethics
826	COPUS	U.K. Committee on the Public Understanding of Science
827	CORD	Common Operational Requirements Document
828	CORE	Consortium for Oceanographic Research and Education
829	COS	Cooper Ornithological Society
830	COSER	COoperative SERvice
831	CoT	Car of Tomorrow (former NASCAR race car design)
832	COTS	Commercial Off The Shelf
833	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
834	CPA	Certified Public Accountant
835	CPAC	Conservative Political Action Conference,Cable Public Affairs Channel ('see-pack')
836	CPCU	Certified Property Casualty Underwriter
837	CPD	Capabilities Production Document
838	CPE	Certificate of Proficiency in English
839	CPE	Certified Professional Ergonomist
840	CPF	Calibration Parameter File,Canadian Patrol Frigate
841	CPG	Clinical Practice Guideline
842	CPIM	Certification on Production and Inventory Management
843	CPIR	Computationally-Private Information Retrieval
844	CPON	Certified Pediatric Oncology Nurse
845	CPPCC	Chinese People's Political Consultative Conference
846	CPR	Canadian Pacific Railway
847	CPR	Cardiopulmonary resuscitation
848	CPSM	Continuous Phase Shift Modulation
849	CPSU	Communist Party of the Soviet Union
850	CPT	Contingency Planning Team
851	CPU	Contract Postal Unit
852	CPV	Cape Verde (ISO 3166 trigram)
853	CPX	Command Post eXercise
854	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
855	CQD	Close Quarters Drill (Morse distress code preceding SOS: CQ 'calling all stations',D 'Distress'; often incorrectly interpreted as 'Come Quick,Distress')
856	Cr	Chromium
857	CR	Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
858	CRAM	Combined Radiometric Correction Model
859	CRD	Capstone Requirements Document
860	CREB	Cyclic AMP-response Element Binding (protein)
861	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
862	CREN	Christian Real Estate Network Real Estate Association
863	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
864	CRIPL	Consolidated Remain-In-Place List
865	CRM	Cardiac Rhythm Management,Customer Relationship Management
866	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
867	CRP	Committee for the Re-Election of the President,Control and Reporting Post
868	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
869	CRTC	Canadian Radio-television and Telecommunications Commission
870	Cs	Caesium
871	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
872	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
873	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
874	CSG	Corps Support Group
875	CSI	see entry
876	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
877	CSIP	Commercial Stable Image Platform (AMD)
878	CSIS	Canadian Security Intelligence Service ('seessiss'),(U.S.) Center for Strategic & International Studies
879	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
880	CSL	U.K. Central Science Laboratory
881	CSPI	Center for Science in the Public Interest
882	CSR	Control Supply Rate
883	CSR	Corporate Social Responsibility
884	CSRC	Conflict Studies Research Centre
885	CSRF	Cross-Site Request Forgery
886	CST	Central Standard Time (UTC−6 hours)
887	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)
888	CTA	Central African Republic (FIFA trigram,but not ISO 3166 or IOC),Chicago Transit Authority,Comando-Geral de Tecnologia Aerospacial (Portuguese,[Brazilian] 'General Command for Aerospace Technology')
889	CTBT	Comprehensive [Nuclear] Test Ban Treaty
890	CTDB	Compact Terrain Data Base (file format)
891	CTE	Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984),Chronic traumatic encephalopathy
892	CTGF	connective tissue growth factor
893	CTI	Co-operative Target Identification
894	CTIL	Critical Tracked Items List
895	CTIS	Central Tire Inflation System
896	CTMS	Clinical Trial Management System
897	CTO	Chief Technical Officer,Chief Technology Officer
898	CTS	Clear-To-Send,Collective Training Standards,Communications Technology Service,Contract Technical Services,Conversation Time Sharing,COSMIC Top Secret
899	CTSS	Compatible Time-Sharing System
900	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
901	CTVT	Canine Transmissible Venereal Tumour
902	Cu	Copper (Latin 'Cuprum')
903	CUB	Cuba (ISO 3166 trigram)
904	CUCV	Commercial Utility Cargo Vehicle
905	CUNY	City University of New York ('CUE-knee')
906	CUPE	Canadian Union of Public Employees ('CUE-pee')
907	CUPS	Common Unix Printing System
908	CUPW	Canadian Union of Postal Workers
909	CUREA	Consortium for Undergraduate Research and Education in Astronomy
910	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
911	CUW	Curaçao (ISO 3166 trigram)
912	CV	curriculum vitae (résumé)
913	CVLL	Crypto Variable Logic Label
914	CVSD	Continuous Variable Slope Delta (modulation)
915	CVT	Continuously Variable Transmission
916	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer, or: Cook Islands (FIPS 10-4 territory code)
917	CWA	Communications Workers of America
918	CWC	Chemical Weapons Convention
919	CWRU	Case Western Reserve University
920	CWS	Canadian Wildlife Service
921	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
922	CXR	Christmas Island (ISO 3166 trigram)
923	CY	Calendar year, or: Cyprus (ISO 3166 and FIPS 10-4 country code digram)
924	CYM	Cayman Islands (ISO 3166 trigram)
925	CZE	Czech Republic (ISO 3166 trigram)
926	CZF	(Christian Zombie Fan)
927	CZMA	(US) Coastal Zone Management Act
928	d	Deci
929	D	Deuterium
930	DADVSI	Loi sur le droit d’auteur et les droits voisins dans la société de l’information (French,'Law on copyrights and related rights in the information society')
931	DAES	Defence Acquisition Executive Summary,(UK MoD) Directorate of Analysis,Experimentation and Simulation
932	DAF	Dissolved Air Flotation,a technique used in water treatment
933	DAFIF	Digital Aeronautical Flight Information File
934	DAK	Disney's Animal Kingdom
935	DAO	Division Ammunition Officer
936	DAQ	Data acquisition,Delivered Audio Quality
937	DARE	Drug Abuse Resistance Education
938	DARO	(U.S.) Defense Airborne Reconnaissance Office
939	DARPA	U.S. Defense Advanced Research Projects Agency
940	DART	Disaster Assistance Response Team,Dublin Area Rapid Transit
941	DAS	Defensive Aids Suite
942	DASD	(U.S.) Deputy Assistant Secretary of Defense
943	DASL	Datapoint's Advanced Systems Language
944	DAU	(U.S.) Defense Acquisition University
945	DAWN	(U.S.) Drug Abuse Warning Network
946	dB	Decibel
947	DB	Deutsche Bahn
948	Db	Dubnium
949	DBA	De Bellis Antiquitatis (miniature wargaming rules)
950	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
951	DBDO	Desert BDO
952	DBE	Dame Commander of the Order of the British Empire
953	DBF	Detection By Fire (weapon launch signature)
954	DBR	De Bellis Renationis (miniature wargaming rules)
955	DBRA	Davis-Bacon Related Acts
956	DBS	Direct Broadcast Services (television)
957	DC	da capo,Italian Democrazia Cristiana,Digital Compass,Direct Current,District of Columbia (postal symbol),Douglas Aircraft Company,Dublin Core,Duty Cycle
958	DCA	Defensive Counter Air,Drum Corps Associates,DiChloroAcetate
959	DCAA	(U.S.) Defense Contract Audit Agency
960	DCAS	Devon and Cornwall Archery Society
961	DCC	Dallas Christian College
962	DCD	[Organ] Donation after Cardiac Death
963	DCE	Data Communication Equipment
964	DCFC	Death Cab for Cutie
965	DCI	Detection,Classification and Identification,Drum Corps International,Duellists' Convocation International,now known simply by the initials
966	DCL	Disney Cruise Line
967	DCN	Deacon
968	DCOM	Disney Channel Original Movie
969	DCSOPS	Deputy Chief of Staff for Operations and plans
970	DCW	Digital Chart of the World
971	DCYSC	Discovery Channel Young Scientist Challenge
972	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
973	DDA	Deputy District Attorney
974	DDN	U.S. Defense Data Network
975	DDS	Doctor of Dental Surgery
976	DDT	Dichloro-Diphenyl-Trichloroethane (insecticide),Dynamic Debugging Tool (computing),DE[edit]
977	DE	Delaware (postal symbol),Germany (ISO 3166 digram)
978	DEA	Drug Enforcement Administration
979	DEA	Drug Enforcement Agency
980	DEC	Department of Environmental Conservation,Digital Equipment Corporation,Disasters Emergency Committee
981	DeCA	(U.S.) Defense Commissary Agency
982	DEFCON	Defence readiness condition
983	DEFRA	(UK) Department for Environment,Food and Rural Affairs
984	DELT	Dual Ended Line Test (ing)
985	DEM	Data Exchange Mechanism,Digital Elevation Model
986	DEN	Denmark (IOC and FIFA trigram,but not ISO 3166)
987	DEPSECDEF	(U.S.) Deputy Secretary of Defense
988	DERA	British Defence Evaluation and Research Agency (1995-2001)
989	DES	Deep Ecliptic Survey
990	DEU	Germany (ISO 3166 trigram)
991	DF	Direct Fire,Direction Finding,Distrito Federal (Spanish and Portuguese for 'federal district')
992	DFAS	(U.S.) Defense Finance and Accounting Service
993	DFB	Deutscher Fußball-Bund (German for 'German Football Association')
994	DFCB	Data Format Control Book
995	DfID	UK Department for International Development
996	DFM	Discrete Field Model see Superluminal motion
997	DFM	Dynamic Flowgraph Methodology
998	DFSP	Dermatofibrosarcoma protuberans
999	DfT	UK Department for Transport
1000	DFTBA	Don't Forget To Be Awesome,a term commonly used by the Vlogbrothers
1001	DG	Dei gratia (Latin,'by the grace of God'),Director-General,Data General
1002	DGA	Direction générale des armées (French 'Armed Forces General Directorate')
1003	DGPS	Differential GPS
1004	DGZ	Desired Ground Zero
1005	DHA	DocosaHexaenoic Acid
1006	DHHS	(U.S.) Department of Health and Human Services
1007	DHRA	(U.S.) DoD Human Resources Activity
1008	DHS	U.S. Department of Homeland Security
1009	DHSS	UK Department of Health and Social Security
1010	DHTFYSS	U.S. Don't Have Time For You Silly S****
1011	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
1012	DIA	U.S. Defense Intelligence Agency
1013	DIAC	Department of Immigration and Citizenship (Australia) [1]
1014	DiC	Design Island Centre (computing usually used in a teaching situation)
1015	DICASS	DIrectional Command Activated Sonobuoy System
1016	DIFAR	DIrectional Frequency Analysis and Recording
1017	DIME	Dense Inert Metal Explosive
1018	DIP	Dual In-line Package (electronics)
1019	DIPS	Defense independent pitching statistics
1020	DIR	Defence Industrial Research
1021	DISCOM	Division Support Command
1022	DISE	Deployable Intelligence Support Element
1023	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
1024	DITY	Do-It-Yourself
1025	DIVAD	Division Air Defence
1026	DIY	Do It Yourself
1027	DJI	Djibouti (ISO 3166 trigram)
1028	DK	Denmark (ISO 3166 digram)
1029	DL	Dexter's Laboratory
1030	DLIC	Detachment Left-In-Contact
1031	DLIR	Depot-Level Inspection and Repair
1032	DLPMC	DorsoLateral PreMotor Cortex
1033	DLRP	Data Link Reference Point
1034	DLS	Deep Lens Survey
1035	DLSA	(U.S.) Defense Legal Services Agency
1036	DLSc	Diploma in Library Science
1037	DLTBGYD	Don't let the bastards grind you down
1038	DMC	(U.S.) Defense Management Council
1039	DMCA	Digital Millennium Copyright Act
1040	DMM	Digital Multimeter
1041	DMOC	Distributed Mission Operations Centre
1042	DMPA	(U.S.) Defense Medical Programs Activity
1043	DMPFC	DorsoMedial PreFrontal Cortex
1044	DMPK	Drug Metabolism and Pharmacokinetics
1045	DMRB	Design Manual for Roads and Bridges
1046	DMS	U.S. Defense Message System
1047	DMSP	U.S. Defense Meteorological Satellite Program
1048	DMT	Dimethyltryptamine
1049	DMV	Department of Motor Vehicles
1050	DMZ	DeMilitarized Zone
1051	DN	Deacon
1052	DNAW	Day Night All Weather
1053	DNDi	Drugs for Neglected Diseases initiative
1054	DNDO	U.S. Domestic Nuclear Detection Office
1055	DNK	Denmark (ISO 3166 trigram)
1056	DNM	Defence Nuclear Material
1057	DNR	Do Not Resuscitate
1058	DNS	Domain Name System
1059	DOB	Date Of Birth
1060	DOD	U.S. Department of Defense
1061	DODAF	U.S. Department of Defense Architectural Framework
1062	DoDD	U.S. Department of Defense Directive
1063	DoDEA	(U.S.) Department of Defense Education Activity
1064	DOE	U.S. Department of Energy
1065	DOHC	Dual-OverHead-Cam engine
1066	DOI	U.S. Department of the Interior
1067	DORA	Defence of the Realm Act
1068	DOS	Density of State
1069	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
1070	DotD	Deal of the Day (marketing gimmick)
1071	DOW	Died of Wounds
1072	DP	Division de production (Algerian petroleum company)
1073	DPA	UK Defence Procurement Agency
1074	DPCO	Double-Pole Change Over
1075	DPDT	Double-Pole Double-Throw
1076	DPI	Dots Per Inch
1077	DPICM	Dual-Purpose Improved Conventional Munition
1078	DPKO	UN Department for Peacekeeping Operations
1079	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
1080	DPPDB	Digital Point Positioning Database
1081	DPRK	Democratic People's Republic of Korea
1082	DPST	Double-Pole Single-Throw
1083	DRC	Democratic Republic of the Congo
1084	DRDC	Defence Research & Development Canada
1085	DREA	Defence Research Establishment Atlantic (obsolete 2002)
1086	DRES	Defence Research Establishment Suffield (obsolete 2002)
1087	DRET	Defence Research Establishment Toronto (obsolete 2002)
1088	DREV	Defence Research Establishment Valcartier (obsolete 2002)
1089	DRIC	(U.S.) Defense Research Information Center
1090	DRMS	(U.S.) Defense Revitalization and Marketing Service
1091	DRPR	Drawing Practices
1092	DRT	Document Related Technologies
1093	Ds	Darmstadtium
1094	DSAS	Disney Sing Along Songs
1095	DSB	(U.S.) Defense Science Board
1096	DSCS	U.S. Defense Satellite Communications System
1097	DSCSOC	DSCS Operations Center
1098	DSE	Dry Sheep Equivalent
1099	DSG	Direct-Shift Gearbox
1100	DSID	Dismounted Soldier Identification System
1101	DSL	Digital Subscriber Line
1102	DSLR	Digital single-lens reflex (camera)
1103	DSM	Diagnostic and Statistical Manual of Mental Disorders
1104	DSN	Deep Space Network
1105	DSPL	Design Specialists and Plans Language
1106	DSR	Deformed Special Relativity
1107	DST	Daylight Saving Time
1108	DSTL	British Defence Science and Technology Laboratory
1109	DSWA	(U.S.) Defense Special Weapons Agency
1110	DTA	Dental Technologists Association
1111	DTD	Digital Terrain Data
1112	DTG	Date-Time Group
1113	DTH	Direct To Home (television)
1114	DTI	UK Department of Trade and Industry
1115	DTIC	(U.S.) Defense Technical Information Center
1116	DTL	Diode-Transistor Logic (electronics)
1117	DTMF	Dual-tone multi-frequency signaling
1118	DTO	Disruptive Technology Office (was ARDA)
1119	DTR	Determine The Relationship
1120	DTSA	(U.S.) Defense Technology Security Administration
1121	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1122	DUSD	(U.S.) Deputy Under-Secretary of Defense
1123	DVLC	UK Driver and Vehicle Licencing Centre
1124	DVM	Doctor of Veterinary Medicine
1125	DVO	Direct View Optics
1126	DVOM	Digital Volt-Ohm Meter
1127	DVP	various meanings (disambiguation page)
1128	DW	Drum Workshop
1129	DWIM	Do What I Mean
1130	DWM	Doctor Who Magazine
1131	DWTS	Dancing with the Stars
1132	DWW	Down with Webster
1133	DXA	Dual-energy X-ray Absorptiometry
1134	DXM	DeXtroMethorphan
1135	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1136	Dy	Dysprosium
1137	DZA	Algeria (ISO 3166 trigram)
1138	E	East
1139	EABU	Explain Acronyms Before Use
1140	EAC	Echelons Above Corps
1141	EAPC	Euro-Atlantic Partnership Council
1142	EAST	Experimental Advanced Superconducting Tokamak
1143	EBD	Electronic Brake Distribution
1144	EBE	Extraterrestrial Biological Entity
1145	EBSA	Employee Benefits Security Administration
1146	EBW	Electron Beam Welding
1147	EBW	Exploding BridgeWire
1148	ECASS	European Centre for Analysis in the Social Sciences [1]
1149	ECBR	European Coalition for Biomedical Research
1150	ECCM	Electronic Counter-Counter-Measures
1151	ECFS	Electronic Case Filing System
1152	ECG	Electrocardiogram
1153	ECHR	European Convention on Human Rights
1154	ECJ	European Court of Justice
1155	ECL	Emitter Coupled Logic (electronics)
1156	ECommHR	European Commission on Human Rights
1157	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1158	ECT	ElectroConvulsive Therapy
1159	ECtHR	European Court of Human Rights
1160	EDA	European Defence Agency
1161	EDAC	Error Detection And Correction
1162	EDCS	Environmental Data Coding Specification
1163	EDH	Eastman Dental Hospital
1164	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1165	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1166	EEC	European Economic Community (predecessor of the EU)
1167	EEG	ElectroEncephaloGram
1168	EENT	End Evening Nautical Twilight
1169	EEO	Equal Employment Opportunity
1170	EEOC	(U.S.) Equal Employment Opportunity Commission
1171	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1172	EFF	Electronic Frontier Foundation
1173	EFL	English as a Foreign Language
1174	EFM	Enterprise Feedback Management
1175	EFOA	European Fuel Oxygenates Association
1176	EFSA	European Food Safety Authority
1177	EFT	Electronic Fund Transfer
1178	EFV	Expeditionary Fighting Vehicle
1179	EG	Egypt (ISO 3166 digram; FIPS 10-4 country code)
1180	EGCG	EpiGalloCatechin-3-Gallate
1181	EGIS	Erieye Ground Interface Segment
1182	EGRET	Energetic Gamma-Ray Experiment Telescope
1183	EGY	Egypt (ISO 3166 trigram)
1184	EHF	Extremely High Frequency
1185	EHR	Equipment History Record
1186	Ei	Exbi
1187	EI	Ireland (FIPS 10-4 country code; from Éire)
1188	EIA	Environmental Impact Assessment
1189	EIAH	Encyclopedia of Iranian Architectural History
1190	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1191	EIC	East India Company
1192	EICS	East India Company's Service
1193	eID	electronic ID
1194	EIRP	Effective Isotropic Radiated Power
1195	EIS	Environmental Impact Statement
1196	EJ	Exajoule
1197	EKG	Electrocardiogram (from German Elektrokardiogramm)
1198	EKMS	Electronic Key Management System
1199	EL	Exalitre
1200	ELINT	Electronic Intelligence
1201	ELL	English Language Learner
1202	ELM	Edge-Localised Mode (plasma physics)
1203	ELO	Electric Light Orchestra
1204	ELSS	Emergency Life Support Stores
1205	EM	ElectroMagnetism/ElectroMagnetic
1206	Em	Exametre
1207	EMA	European Medicines Agency
1208	EMCON	(Electromagnetic) Emissions Control
1209	EMDG	Euro-Missile Dynamics Group
1210	EMDR	Eye Movement Desensitisation and Reprocessing
1211	EMEA	Europe,Middle East and Africa
1212	EMG	ElectroMyoGraph
1213	EMP	ElectroMagnetic Pulse
1214	EMS	Emergency Medical Services
1215	EMT	Emergency Medical Technician
1216	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1217	ENE	East North-East
1218	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1219	ENTEC	Euro NATO Training Engineer Centre
1220	ENVL	Envelope
1221	ENY	Enemy
1222	EOD	Explosive Ordnance Disposal
1223	EOG	ElectroOculoGraphy
1224	EOM	End of Message
1225	EOSAT	Earth Observation Satellite
1226	EOSDIS	Earth Observation Satellite Data and Information System
1227	EP	European Parliament
1228	EP	Extended play
1229	EPCOT	Experimental Prototype Community Of Tomorrow
1230	EPGS	EOS Polar Ground Sites
1231	EPIRB	Emergency Position Indicating Radio Beacon
1232	EPL	English Premier League
1233	EPOS	Electronic Point Of Sale
1234	EPPA	Employee Polygraph Protection Act
1235	EPR	European Pressurised [Nuclear] Reactor
1236	EQ	Emotional Quotient
1237	Er	Erbium
1238	ERCIM	European Research Consortium for Informatics and Mathematics
1239	ERI	Eritrea (ISO 3166 trigram)
1240	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1241	EROS	Earth Resources Observation System
1242	ERP	Engineer Regulating Point
1243	ERR	Eesti Rahvusringhääling
1244	ERS	Earth Resources Survey
1245	ERTS	Earth Resources Technology Satellite (became Landsat)
1246	ERV	Endogenous RetroVirus
1247	ESD	ElectroStatic Discharge
1248	ESDP	European Security and Defence Policy
1249	ESE	East South-East
1250	ESH	Western Sahara (ISO 3166 trigram)
1251	ESL	English as a Second Language
1252	ESM	Electronic warfare Support Measures
1253	ESO	European Southern Observatory
1254	ESOL	English for Speakers of Other Languages
1255	ESPN	Entertainment and Sports Programming Network
1256	ESU	Emergency Services Unit
1257	ESV	Engineer Support Vehicle
1258	ET	Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1259	ETH	Ethiopia (ISO 3166 trigram)
1260	ETI	Extra-Terrestrial Intelligence
1261	ETLA	Extended TLA
1262	ETT	Embedded Training Team
1263	Eu	Europium
1264	EUCOM	(U.S.) European Command
1265	EUUSA	European Union and United States of America
1266	EV	Exavolt
1267	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1268	EWTN	Eternal Word Television Network
1269	Exatesla	Extra Terrestrial
1270	EXREP	Expeditious Repair (SM&R code)
1271	f	Femto
1272	fA	Femtoampere
1273	FA	Food Addicts in Recovery Anonymous
1274	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1275	FAAD	Forward Area Air Defence
1276	FAADEZ	Forward Area Air Defence Engagement Zone
1277	FAAFP	Fellow of the American Academy of Family Physicians
1278	FAAN	Fellow of the American Academy of Neurology
1279	FAAN	Fellow of the American Academy of Nursing
1280	FAAQ	Frequently Asked and Anticipated Questions
1281	FAASV	Field Artillery Ammunition Supply Vehicle
1282	FAB	Feline Advisory Bureau (UK feline charity)
1283	FACA	(US) Federal Advisory Committee Act
1284	FACH	Fuerza Aérea de Chile
1285	FACN	Fellow of the American College of Nutrition
1286	FACP	Fellow of the American College of Physicians
1287	FACTS	Flexible Alternating Current Transmission System
1288	FAM	Foreign Affairs Manual
1289	FAO	Food and Agriculture Organization
1290	FAPA	Fellow of the American Psychological Association
1291	FAPHA	Fellow of the American Public Health Association
1292	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1293	FASCAM	Family of Scatterable Mines[1]
1294	FASD	Fetal Alcohol Spectrum Disorder
1295	FASEB	Federation of American Societies for Experimental Biology
1296	FAT	Field Artillery Tractor
1297	FAVS	Future Armoured Vehicle System
1298	FAW	Football Association of Wales
1299	FBCS	Fellow of the British Computer Society
1300	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1301	FBIS	Foreign Broadcast Information Service
1302	FBM	Board foot
1303	fC	Femtocoulomb
1304	FCC	U.S. Federal Communications Commission
1305	FCE	First Certificate in English
1306	FCF	Financial Free Cash Flow
1307	FCLA	Fraud Claims Law Associate
1308	FCO	UK Foreign and Commonwealth Office
1309	FCW	Florida Championship Wrestling
1310	FD	Falun Dafa
1311	FDA	Food and Drug Administration (U.S.)
1312	FDBK	(I) Feedback
1313	Fe	Iron (Latin Ferrum)
1314	FEAST	Forum for European-Australian Science and Technology Cooperation
1315	FEATS	Festival of European Anglophone Theatrical Societies link title
1316	FEBA	Forward Edge of the Battle Area
1317	FED	Field Emission Display
1318	FEDEP	Federation Development Process (Simulation)
1319	FEF	Frontal Eye Field (neurophysiology)
1320	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1321	FENS	Federation of European Neuroscience Societies
1322	FES	Flywheel Energy Storage
1323	FEST	Frankfurt English Speaking Theatre link title
1324	FET	Field-effect transistor
1325	FEZ	Fighter Engagement Zone
1326	fF	Femtofarad
1327	FF	Final Fantasy
1328	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1329	FFC	Free For Chat
1330	FFE	Fukuoka Futures Exchange
1331	FFF	Fédération française de football (French for: French Football Federation)
1332	FFG	Guided Missile Frigate (hull classification symbol)
1333	FFOV	Forward Field Of View
1334	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1335	FFS	For Fuck's Sake
1336	FFT	Final Fantasy Tactics
1337	FG	Falun Gong
1338	fg	Femtogram
1339	FG	Fog (METAR Code), French Guiana (FIPS 10-4 territory code)
1340	FGOTUS	First Gentleman of the United States
1341	FGR	Flickr Group Roulette
1342	fH	Femtohenry
1343	FHFIF	Foster's Home for Imaginary Friends
1344	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1345	FI	Finland (ISO 3166 digram; FIPS 10-4 country code)
1346	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1347	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1348	FIBUA	Fighting In Built-Up Areas
1349	FIC	Fellowship for Intentional Community
1350	FID	Foreign Internal Defence
1351	FIE	Fly-In Echelon
1352	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1353	FIFe	Fédération internationale féline (French for: International Feline Federation)
1354	FIFO	First In, First Out
1355	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1356	FIGJAM	Fuck I'm Good, Just Ask Me
1357	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1358	FIN	Finland (ISO 3166 trigram)
1359	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1360	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1361	FIS	Fédération internationale de ski (French for: International Ski Federation)
1362	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1363	FISH	Fluorescence In-Situ Hybridisation
1364	FiST	Fire Support Team
1365	FITS	Flexible Image Transport System
1366	FIU	Florida International University
1367	fJ	Femtojoule
1368	FJ	Fiji (ISO 3166 digram; FIPS 10-4 country code)
1369	FJI	Fiji (ISO 3166 trigram)
1370	FJN	Financial Job Network
1371	FK	Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1372	fK	Femtokelvin
1373	FKSM	Fort Knox Supplemental Manual
1374	FKT	Fastest Known Time
1375	fL	Femtolitre
1376	FL	Florida (postal symbol)
1377	fl	floruit (Latin for: living) (genealogy)
1378	FLA	Florida,Front Line Assembly,Future Large Aircraft
1379	FLAB	Four-letter abbreviation
1380	FLAC	Free Legal Advice Centres
1381	FLAC	Free Lossless Audio Codec
1382	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1383	FLB	Forward Logistics Base
1384	FLET	Forward Line of Enemy Troops
1385	FLG	Falun Gong
1386	FLIP	Flight Information Publication
1387	FLIR	Forward Looking InfraRed (sensor)
1388	FLK	Falkland Islands (ISO 3166 trigram)
1389	FLOT	Forward Line of Own Troops
1390	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1391	FLQ	Free Legal Questions
1392	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1393	FLSA	Fair Labor Standards Act
1394	FLTSAT	Fleet Satellite
1395	FLTSATCOM	Fleet Satellite Communication System
1396	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1397	FM	Factory Mutual
1398	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)
1399	fm	Femtometre
1400	Fm	Fermium
1401	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1402	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1403	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1404	FMCG	Fast Moving Consumer Goods
1405	FME	Formal Methods Europe
1406	FMECA	Failure Modes and Effect Criticality Analysis
1407	FMJD	Fédération Mondiale du Jeu de Dames
1408	FMLA	Family Medical Leave Act
1409	FoE	Friends of the Earth
1410	FOGC	Federal Oil and Gas Council
1411	FOH	Front Of House
1412	FOIA	Freedom of Information Act
1413	FOM	Federation Object Model
1414	FONSI	Finding of No Significant Impact
1415	FOO	Forward Observation Officer
1416	FOOP	Friends Of Organ Pipes (Volunteer group)
1417	FoS	Family of Systems
1418	FOSE	Fallout 3 Script Extender
1419	FOSE	Federal Office Systems Expo
1420	FOT	Free on truck
1421	FOTA	Fellow of the Orthodontic Technicians Association
1422	FOTC	Flight of the Conchords
1423	FOUO	For Official Use Only
1424	FP	French Polynesia (FIPS 10-4 territory code)
1425	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1426	FPS	Fire Prevention System
1427	FQ	Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1428	FR	France (FIPS 10-4 country code; ISO 3166 digram)
1429	Fr	Francium
1430	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1431	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1432	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1433	FRICBM	Full Range ICBM
1434	FRO	Faroe Islands (ISO 3166 trigram)
1435	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1436	FRSA	Fellow of the Royal Society of Art
1437	FRY	Federal Republic of Yugoslavia
1438	fs	Femtosecond
1439	fS	Femtosiemens
1440	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1441	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1442	FSCL	Fire Support Co-ordination Line
1443	FSE	Fire Support Element
1444	FSF	Free Software Foundation
1445	FSH	Follicle Stimulating Hormone
1446	FSI	Fuel Stratified Injection
1447	FSS	Fire Support Station
1448	FSSP	Families of Structurally Similar Proteins
1449	FSTC	Foreign Science Technology Center (now NGIC)
1450	fT	Femtotesla
1451	FTC	Federal Trade Commission
1452	FTE	Full Time Equivalent
1453	FTL	Faster Than Light
1454	FTS	Flight Termination System used during some rocket launches
1455	FTS	Fuck That Shit
1456	FU	Smoke (METAR Code)
1457	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1458	fV	Femtovolt
1459	fW	Femtowatt
1460	FW	Forward
1461	FWC	Football World Cup
1462	FWF	Fixed Word Format
1463	FWI	French West Indies
1464	FWIW	For What It's Worth
1465	FWS	U.S. Fish and Wildlife Service
1466	FWT	Fresh Water Tank
1467	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1468	FYA	For Your Agenda
1469	FYDP	Five-Year Defense Plan (U.S.)
1470	FYI	For Your Information
1471	FYROM	Former Yugoslav Republic of Macedonia
1472	FZDZ	Freezing Drizzle (METAR Code)
1473	FZFG	Freezing Fog (METAR Code)
1474	FZRA	Freezing Rain (METAR Code)
1475	g	Gram
1476	G3	Heckler & Koch G3
1477	GAAR	General Anti-Avoidance Rule (tax evasion)
1478	GAB	Gabon (ISO 3166 trigram)
1479	GABA	Gamma-AminoButyric Acid
1480	GAD	Generalized Anxiety Disorder
1481	GAF	Garfield and Friends
1482	GAO	U.S. Government Accountability Office
1483	GAW	Global Atmospheric Watch
1484	GBBC	Great (Global) Backyard Bird Count
1485	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1486	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1487	GCA	Graduate in Claims Administration
1488	GCD	see entry
1489	GCF	Greatest Common Factor
1490	GCI	Ground-controlled interception
1491	GCN	Gamma-ray burst Coordination Network
1492	GCS	Global Coordinate System
1493	GCSE	General Certificate of Secondary Education (UK)
1494	Gd	Gadolinium
1495	GD	Grenada (ISO 3166 digram)
1496	GDL	Game Definition Language
1497	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1498	GDR	German Democratic Republic (cf. DDR)
1499	GDW	Game Designers Workshop
1500	Ge	Germanium
1501	GEBCO	General Bathymetric Chart of the Oceans
1502	GEC	Great Engineering Challenge
1503	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1504	GEEP	Geophysical Equipment Exploration Platform
1505	GEN	Full General (four stars) in the U.S. Army
1506	GeV	Gigaelectron-volt
1507	GEV	Ground Effect Vehicle
1508	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1509	GFI	Ground Fault Interruptor (aka GFCI)
1510	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1511	GFN	Global Footprint Network
1512	GG	Georgia (FIPS 10-4 country code)
1513	GGK	Good God Karma
1514	GHA	Ghana (ISO 3166 trigram)
1515	GHB	gamma-Hydroxybutyric acid
1516	Gi	Gibi
1517	GIB	Gibraltar (ISO 3166 trigram)
1518	GIG	Global Information Grid
1519	GINO	Godzilla In Name Only
1520	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1521	GJD	Geocentric Julian Day
1522	GLAAD	Gay and Lesbian Alliance Against Defamation
1523	GLAC	General Ledger Accounting Code
1524	GLAST	Gamma-ray Large Area Space Telescope
1525	GLBA	Gramm-Leach-Bliley Act
1526	GLC	Gas-liquid chromatography
1527	GLP	Guadeloupe (ISO 3166 trigram)
1528	GLV	Gained Life Value
1529	Gm	Gigametre
1530	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Germany (FIPS 10-4 country code),Guru Meditation (computing)
1531	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
1532	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1533	GMFSC	Ground Mobile Forces Satellite Communications
1534	GMO	Genetically Modified Organism
1535	GMPCS	Global Mobile Personal Communications by Satellite
1536	GNAS	Grand National Archery Society
1537	GNB	Guinea-Bissau (ISO 3166 trigram)
1538	GNP	Gross National Product
1539	GNQ	Equatorial Guinea (ISO 3166 trigram)
1540	GnRH	Gonadotropin-Releasing Hormone
1541	GO	Glorioso Islands (FIPS 10-4 territory code)
1542	GOA	General of the Army (United States only)
1543	GOAT	Greatest Of All Time
1544	GOC	General Officer Commanding
1545	GOES	Geostationary Operational Environmental Satellite
1546	GOP	Grand Old Party
1547	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1548	GOSC	General Officer Steering Committee
1549	GOSH	Great Ormond Street Hospital
1550	GOSP	Gas/Oil Separation Plant
1551	GOTS	Government off-the-shelf
1552	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1553	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1554	GPA	Grade Point Average
1555	GPC	Global Path Cache
1556	GPIB	General-Purpose Instrumentation/Interface Bus
1557	GPO	General Post Office
1558	GPPC	Genetics and Public Policy Center
1559	GPR	Ground-Penetrating Radar
1560	GPS	General Problem Solver,Global Positioning System
1561	GPT	General Purpose Technology, Get paid to surf (an online business model)
1562	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]
1563	GR	Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1564	GRAIL	Gravity Recovery and Interior Laboratory
1565	GRAS	Generally recognized as safe (FDA list)
1566	GRB	Gamma-Ray Burst
1567	GRC	Greece (ISO 3166 trigram)
1568	GRD	Grenada (ISO 3166 trigram)
1569	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1570	grep	[search] Globally for Regular Expression,Print [lines]
1571	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1572	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1573	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1574	GRL	Greenland (ISO 3166 trigram)
1575	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1576	Gs	Gigasecond
1577	GSA	U.S. General Services Administration
1578	GSD	Graphical Situation Display
1579	GSGB	(God send glamour boy 9-10/10)
1580	GSK	GlaxoSmithKline [good sexual karma]
1581	GSN	Game Show Network
1582	GSO	General Services Officer (U.S. Department of State)
1583	GSOH	Good Sense Of Humour
1584	GSP	Georges St-Pierre (Canadian MMA fighter)
1585	GSR	Gun Shot Residue
1586	GSS	Generic Security Services
1587	GSW	Gunshot wound
1588	GTD	Getting Things Done
1589	GTG	Got To Go (Internet chat)
1590	GTGN	Getty Thesaurus of Geographic Names
1591	GTK	Good To Know (Internet chat)
1592	GTM	Guatemala (ISO 3166 trigram)
1593	GU	Guam (postal symbol; ISO 3166 digram)
1594	GUF	French Guiana (ISO 3166 trigram)
1595	GUILT	Gangliated Utrophin Immuno Latency Toxin
1596	GULCR	Grupo de Usuarios de Linux de Costa Rica
1597	GUT	Grand Unification Theory
1598	GWARS	Ground Warfare System (simulation)
1599	GWAS	Grand Western Archery Society
1600	GWOT	Global War on Terrorism
1601	GXE	Gene-enivronment interaction
1602	GXM	Matrox Graphics eXpansion Module
1603	GY	Guyana (FIPS 10-4 country code; ISO 3166 digram)
1604	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1605	h	Hecto
1606	H	Henry
1607	H1	First half of the year
1608	H2	Second half of the year
1609	HAARP	High Frequency Active Auroral Research Program
1610	HAART	Highly Active Anti-Retroviral Therapy
1611	HAI	Human Awareness Institute
1612	HAL	Hardware Abstraction Layer
1613	HALO	High Altitude Low Opening (parachute jump)
1614	HAM	Amateur radio operator
1615	HANS	Head And Neck Support (device used in many race cars)
1616	HARM	High-speed Anti-Radiation Missile
1617	HAW	Heavy Antitank Weapon
1618	HAWK	Homing All the Way Killer (air defence system)
1619	HAZ	Heat-Affected Zone
1620	HAZMAT	Hazardous Materials
1621	HBCD	HexaBromoCycloDodecane
1622	HBO	Home Box Office
1623	HBR	Harvard Business Review
1624	HBT	Heterojunction Bipolar Transistor
1625	HBV	Hepatitis B Virus
1626	HCCI	Homogeneous Charge Compression Ignition
1627	HCF	Highest Common Factor
1628	HCSC	Higher Command and Staff Course
1629	HDL	High-Density Lipoprotein
1630	HDM	Human Decision-Making
1631	HDRA	Henry Doubleday Research Association
1632	He	Helium
1633	HE	High Explosive
1634	HEAT	High Explosive Anti-Tank (ammunition)
1635	HEBA	Hellenic Basketball Clubs Association
1636	HEER	High-Explosive Extended Range (ammunition)
1637	HEIC	Honourable East India Company
1638	HEMP	High-Altitude Electromagnetic Pulse
1639	HEOSS	High Earth Orbit Space Surveillance
1640	HEP	High-Explosive Plastic (ammunition)
1641	HEPA	High-Efficiency Particulate Air (filter)
1642	HESV	Heavy Engineering Support Vehicle
1643	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1644	HEU	Highly Enriched Uranium
1645	Hf	Hafnium
1646	HF	High Frequency
1647	HFE	Human Fertilisation and Embryology (UK Act)
1648	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1649	HFEA	Human Fertilisation and Embryology Authority (UK)
1650	Hg	Mercury (Latin Hydrargyrum)
1651	HGC	UK Human Genetics Commission
1652	HGF	Human Growth Factor
1653	HGTV	Home & Garden Television
1654	HI	Hawaii (postal symbol)
1655	HIH	His (or Her) Imperial Highness
1656	HIM	His (or Her) Imperial Majesty
1657	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1658	HIMEZ	High Altitude Missile Engagement Zone
1659	HIMYM	How I Met Your Mother
1660	HIPAA	U.S. Health Insurance Portability and Accountability Act
1661	Hipparcos	HIgh Precision Parallax COllecting Satellite
1662	Hird	Hurd of interfaces representing depth (cf. HURD)
1663	HiRISE	High Resolution Imaging Science Experiment
1664	HIT	Health Information Technology
1665	HIV	Human Immunodeficiency Virus
1666	HIWT	Hobart Institute of Welding Technology
1667	HJD	Heliocentric Julian Day
1668	HK	Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1669	HKG	Hong Kong (ISO 3166 trigram)
1670	HKS	HyperKinetic Syndrome
1671	hL	Hectolitre
1672	HL	Holding Line
1673	HLL	High-Level Language
1674	HLN	Headline News
1675	HLOS	High Level Output Specification
1676	HM	Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1677	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1678	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1679	HMF	HydroxyMethyl Furfural
1680	HMO	Health maintenance organization
1681	HMP	Her Majesty's Prison
1682	HMRC	Her/His Majesty's Revenue and Customs
1683	HMSO	Her Majesty's Stationery Office
1684	HMV	His Master's Voice
1685	HN	Honduras (ISO 3166 digram)
1686	HND	Honduras (ISO 3166 trigram)
1687	Ho	Holmium
1688	HO	Honduras (FIPS 10-4 country code)
1689	HOLLAND	Hope Our Love Lasts And Never Dies
1690	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1691	HOT	Highly Optimised Tolerance
1692	HOTAS	Hands on throttle-and-stick
1693	HOV	High Occupancy Vehicle
1694	hp	horse power
1695	HPA	UK Health Protection Agency
1696	HPCL	Hindustan Petroleum Corporation Limited
1697	HPLC	High Performance Liquid Chromatography
1698	HPT	High[er] Payoff Target
1699	HPV	Human Papilloma Virus
1700	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1701	HRD	Human Resource Development
1702	HRF	High iness Forces
1703	HRH	His (or Her) Royal Highness
1704	HRM	His (or Her) Royal Majesty
1705	HRM	Human Resource Management
1706	HRT	Hormone Replacement Therapy
1707	Hs	Hassium
1708	HSBC	The Hong Kong and Shanghai Banking Corporation
1709	HSC	Higher School Certificate
1710	HSM	High School Musical
1711	HSMAD	Human Science/Modeling and Analysis Data
1712	HSN	Home Shopping Network
1713	HSPH	Harvard School of Public Health
1714	HSSI	High-Speed Serial Interface
1715	HST	see entry
1716	HTA	HyperText Application
1717	HTFU	Harden The Fuck Up
1718	HTH	Hope That Helps
1719	HTI	Haiti (ISO 3166 trigram)
1720	HTML	HyperText Markup Language
1721	HTR	Heated Towel Rail
1722	HTS	High-Temperature Superconducting wire
1723	HTTP	HyperText Transfer Protocol
1724	HU	Hungary (ISO 3166 digram; FIPS 10-4 country code)
1725	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1726	HUN	Hungary (ISO 3166 trigram)
1727	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1728	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1729	HVAP	High Velocity Armour Piercing (ammunition)
1730	HVHF	High velocity human factors
1731	HVM	High Velocity Missile
1732	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1733	HWM	Hardware morphing (computer graphics rendering)
1734	HXB	The glycoprotein Tenascian C
1735	HZ	Haze (METAR Code)
1736	Hz	Hertz
1737	IA	Iowa (postal symbol)
1738	IAAL	I Am A Lawyer
1739	IAB	International Association for Biologicals
1740	IAD	Ion Assisted Deposition
1741	IADS	Integrated Air Defence System
1742	IAEA	International Atomic Energy Agency
1743	IAF	{i} Industrial Areas Foundation
1744	IAFG	Information Assurance Focus Group
1745	IANA	Internet Assigned Numbers Authority
1746	IANAL	I Am Not A Lawyer
1747	IAS	Image Assessment System
1748	IASIP	It's Always Sunny in Philadelphia
1749	IATA	International Air Transport Association
1750	IATF	International Automotive Task Force
1751	IATSE	International Alliance of Theatrical Stage Employees
1752	IAUC	International Astronomical Union Circular
1753	IAW	In Accordance With
1754	IB	International Baccalaureate
1755	IBA	Important Bird Area
1756	IBD	Inflammatory Bowel Disease
1757	IBDM	Information Based Decision Making
1758	IBM	International Business Machines
1759	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1760	IBS	Irritable Bowel Syndrome
1761	ICANN	Internet Corporation for Assigned Names and Numbers
1762	ICAO	International Civil Aviation Organization
1763	ICBM	Intercontinental Ballistic Missile
1764	ICBN	International Code of Botanical Nomenclature
1765	ICE	In case of emergency
1766	ICES	International Council for the Exploration of the Sea
1767	ICF	Intelligent Community Forum
1768	ICMP	Internet Control Message Protocol
1769	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1770	ICO	Intermediate Circular Orbit
1771	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1772	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1773	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1774	ICRL	Individual Component Repair List
1775	ICRS	International Celestial Reference System
1776	ICSI	Intracytoplasmic Sperm Injection
1777	ICT	Information and communication technologies
1778	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1779	ICV	Infantry Carrier Vehicle
1780	ICYMI	In Case You Missed It
1781	IDC	International Data Corporation
1782	IDDI	I don't do initialisms (see irony)
1783	IDGAF	I don't give a fuck
1784	IDK	I don't know
1785	IDL	Interface Definition Language
1786	IDN	Indonesia (ISO 3166 trigram)
1787	IEA	International Energy Agency
1788	IEC	International Electrotechnical Commission
1789	IED	Improvised Explosive Device
1790	IELTS	International English Language Testing System
1791	IER	Information Exchange Requirement
1792	IET	Initial Entry Training
1793	IET	Institution of Engineering and Technology
1794	IETF	Internet Engineering Task Force
1795	IEW	Intelligence and Electronic Warfare
1796	IFAB	International Football Association Board
1797	IFAH	International Federation for Animal Health
1798	IFAP	International Federation of Agricultural Producers
1799	IFO	Identified Flying Object (see also UFO)
1800	IFOV	Instantaneous Field of View
1801	IFPI	International Federation of Phonographic Industries
1802	IFRB	International Frequency Registration Board
1803	IFV	Infantry Fighting Vehicle
1804	IG	Inspector General
1805	IGNOU	Indira Gandhi National Open University
1806	IGS	International Ground Station
1807	IHH	Idiopathic Hypogonadotropic Hypogonadism
1808	IHO	International Hydrographic Organization
1809	IHR	Institute for Historical Review
1810	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1811	II	Two (in Roman numerals)
1812	IICA	Inter-American Institute for Cooperation on Agriculture
1813	IIE	Innovative Interstellar Explorer
1814	III	Three (in Roman numerals)
1815	IIRC	If I Recall/Remember Correctly
1816	IISS	International Institute for Strategic Studies
1817	IJN	Imperial Japanese Navy (World War II)
1818	IJWP	Interim Joint Warfare Publication
1819	ILDS	Improved Landmine Detection System
1820	ILO	International Labour Organization
1821	ILRI	International Livestock Research Institute
1822	ILY	I Love You [pronounced ILL-LEE]
1823	IMBD	International Migratory Bird Day
1824	IMDb	Internet Movie Database
1825	IME	In My Experience
1826	IMHO	In My Humble/Honest Opinion
1827	IML	International Mister Leather
1828	IMNSHO	In My Not So Humble Opinion
1829	IMPAC	International Merchant Purchase Authorization Card
1830	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1831	IMPATT	IMPact Avalanche Transit Time diode
1832	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1833	IMRL	Individual Material iness List
1834	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1835	IMsL	International Ms. Leather
1836	IMT	Integrated Management Tool
1837	IMU	International Mathematical Union
1838	In	Indium
1839	INA	Immigration and Nationality Act
1840	INAS	International Near-Earth Asteroid Survey
1841	INCITS	InterNational Committee for Information Technology Standards
1842	IND	India (ISO 3166 trigram)
1843	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1844	inet	the Internet
1845	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1846	INFOSEC	Information Security
1847	INLA	Irish National Liberation Army
1848	INMARSAT	International Maritime Satellite organization
1849	INRIA	Institut national de recherche en informatique et en automatique
1850	INS	Immigration and Naturalization Service
1851	InSAR	Interferometric synthetic aperture radar
1852	INST	Information Standards and Technology
1853	INTERFET	International Force for East Timor
1854	INTSUM	Intelligence Summary
1855	IO	British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1856	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1857	IPB	Intelligence Preparation of the Battlefield
1858	IPL	Inferior Parietal Lobule
1859	IPO	Initial Public Offering
1860	IPT	Integrated Product/Project Team
1861	IPTS	Institute for Prospective Technological Studies
1862	IPTV	Internet Protocol TeleVision
1863	IPW	Interrogation of Prisoners of War
1864	Ir	Iridium
1865	IRAD	Internal Research and Development
1866	IRAN	(I) Inspect and Repair As Necessary
1867	IRAS	Infrared Astronomical Satellite
1868	IRB	International Rugby Board
1869	IRBM	Intermediate Range Ballistic Missile
1870	IREA	Intermountain Rural Electric Association
1871	IRINN	Islamic Republic of Iran News Network
1872	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1873	IRN	Iran (ISO 3166 trigram)
1874	IRO	International Refugee Organisation
1875	IRQ	Iraq (ISO 3166 trigram)
1876	IRS	U.S. Internal Revenue Service
1877	IRST	Infra-red Search and Track
1878	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1879	ISAR	Inverse SAR (Synthetic Aperture Radar)
1880	ISB	Intermediate Staging Base
1881	ISBN	International Standard Book Number (ISO 2108)
1882	ISCCP	International Satellite Cloud Climatology Project
1883	ISCII	Indian Standard Code for Information Interchange
1884	ISDN	Integrated Services Digital Network
1885	ISEF	Intel International Science and Engineering Fair
1886	ISEN	Internet Search Environment Number
1887	ISF	Internal Security Force
1888	ISIL	Islamic State of Iraq and the Levant
1889	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1890	ISL	Iceland (ISO 3166 trigram)
1891	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1892	ISMB	International Society of Matrix Biologists
1893	ISMC	Intelligent Sounding Meaningless Conversation
1894	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1895	ISPE	International Society for Pharmacoepidemiology
1896	ISRO	Indian Space Research Organisation
1897	ISSCR	International Society for Stem Cell Research
1898	ISSN	International standard serial number (ISO 3297)
1899	ISTC	Institute of Scientific and Technical Communications (UK)
1900	ISTS	Intel Science Talent Search
1901	ITA	Italy (ISO 3166 trigram)
1902	ITAG	Inertial Terrain-Aided Guidance
1903	ITALY	I'll Truly Always Love You
1904	ITAS	Improved Target Acquisition Sight
1905	ITC	InferoTemporal Cortex (neurophysiology)
1906	ITCZ	Intertropical Convergence Zone
1907	ITEC	Information Technology Exposition & Conference
1908	ITEMS	Interactive Tactical Environment Management System
1909	ITER	International Thermonuclear Experimental Reactor
1910	ITF	International Tennis Federation
1911	ITK	In The Know
1912	ITN	Independent Television News (British)
1913	ITT	International Telephone and Telegraph (U.S.)
1914	ITTO	International Tropical Timber Organization
1915	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1916	Iveco	Industrial Vehicles Corporation
1917	IVF	In Vitro Fertilisation
1918	IVI	Interchangeable Virtual Instrument
1919	IVIS	Inter-Vehicle Information System
1920	IVL	Inter-Visibility Line
1921	IVM	In Vitro [Oocyte] Maturation
1922	IVO	In Vicinity Of
1923	IW	Information Warfare
1924	IWARS	Infantry Warrior Simulation
1925	IWC	International Whaling Commission
1926	IWW	Industrial Workers of the World
1927	IX	Nine (in Roman numerals)
1928	IXT	IntraText digital library; IntraText lexical hypertext
1929	IY	Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1930	IZ	Iraq (FIPS 10-4 country code)
1931	J	Joule
1932	J1	Joint [Manpower &] Personnel Directorate
1933	J2	Joint Intelligence Directorate
1934	J3	Joint Operations Directorate
1935	J4	Joint Logistics Directorate
1936	J5	Joint Strategic Plans & Policy Directorate
1937	J7	Joint Operational Plans & Interoperability Directorate
1938	JA	Japan (FIPS 10-4 country code)
1939	JAFT	Just A Field Test
1940	JAL	Japan Airlines
1941	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1942	JAM	Jamaica (ISO 3166 trigram)
1943	JAMA	Journal of the American Medical Association
1944	JANET	Joint Academic Network
1945	JATO	Jet-Assisted Take-Off
1946	JB	Jail Bait
1947	JB	Junior Branch
1948	JBFSA	Joint Blue Force Situational Awareness
1949	JCDB	Joint Common Data Base
1950	JCDS	Joint Chiefs of the Defence Staff
1951	JCIDS	Joint Capabilities Integration and Development System
1952	JCL	Job Control Language
1953	JCP	Java Community Process
1954	JCS	Joint Chiefs of Staff
1955	JCW	Juggalo Championship Wrestling
1956	JDBC	Java Data Base Connectivity
1957	JDEM	Joint Dark Energy Mission
1958	JDL	Jewish Defense League
1959	JE	Jersey (FIPS 10-4 territory code)
1960	JEFX	Joint Expeditionary Force eXperiment
1961	JET	Joint European Torus
1962	JEZ	Joint Engagement Zone
1963	JFACC	Joint Force Air Component Commander
1964	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1965	JFC	Joint Force Commander
1966	JFK	John Fitzgerald Kennedy or the airport named after him.
1967	JFLCC	Joint Force Land Component Commander
1968	JFMCC	Joint Force Maritime Component Commander
1969	JFO	Journal of Field Ornithology
1970	JFSOCC	Joint Force Special Operations Component Commander
1971	JFTX	Joint Field Training Exercise
1972	JH	Japan Highway Public Corporation
1973	JH	Jharkhand (Indian state code)
1974	JI	Joint Implementation
1975	JIB	Joint Information Bureau
1976	JIC	Joint Intelligence Centre
1977	JINI	Java Intelligent Network Infrastructure
1978	JITC	Joint Interoperability Test Command
1979	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1980	JJAP	Japanese Journal of Applied Physics
1981	JL	Japan Airlines (IATA airline designator)
1982	JLA	Justice League of America
1983	JM	Jamaica (FIPS 10-4 country code; ISO 3166 digram)
1984	JMS	Java Message Service
1985	JN	Jan Mayen Island (FIPS 10-4 territory code)
1986	JNI	Java Native Interface
1987	JNLP	Java Network Launch Protocol
1988	JO	Jordan (FIPS 10-4 country code; ISO 3166 digram)
1989	JOA	Joint Operations Area
1990	JOPES	Joint Operations Planning and Execution System
1991	JOR	Jordan (ISO 3166 trigram)
1992	JOTS	Joint Operations Tactical System
1993	JPL	Jet Propulsion Laboratory
1994	JPN	Japan (ISO 3166 trigram)
1995	JPOW	Joint Project Optic Windmill
1996	JRDF	Joint Rapid Deployment Forces
1997	JRE	Java Runtime Environment
1998	JREF	James Randi Educational Foundation
1999	JROC	Joint Requirements Oversight Council
2000	JROCM	JROC Memorandum
2001	JRRF	Joint Rapid Reaction Force
2002	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
2003	JSAP	Japan Society of Applied Physics
2004	JSCSC	Joint Services Command and Staff College
2005	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
2006	JSF	Joint Strike Fighter
2007	JSIMS	Joint Simulation System
2008	JSOA	Joint Special Operations Area
2009	JSOTF	Joint Special Operations Task Force
2010	JSP	JavaServer Page
2011	JSP	Joint Services Publication
2012	JSR	Java Specification Request
2013	JSS	Joint Support Ship Project
2014	JTC	Joint Training Confederation
2015	JTF	Joint Task Force
2016	JTFEX	Joint Task Force Exercise
2017	JTLS	Joint Theater Level Simulation
2018	JTMD	Joint Theatre Missile Defence
2019	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
2020	JU	Juan de Nova Island (FIPS 10-4 territory code)
2021	JUGFET	JUnction Gate Field-Effect Transistor
2022	JUICE	JUpiter ICy Moon Explorer
2023	JUO	Joint Urban Operations
2024	JV	Joint Venture,Junior Varsity
2025	JW	Jehovah's Witnesses
2026	JWARS	Joint Warfare System (simulation)
2027	JWP	Joint Warfare Publication
2028	JY	Japanese Yen
2029	JZ	Joint Zone
2030	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
2031	k	Kilo-
2032	K	picokelvin
2033	K9	Canine Police Unit
2034	Ka	Kamov Design Bureau
2035	kA	Kiloampere
2036	KA	Knowledge Acquisition,Karnataka (Indian state code)
2037	KAF	Kandahar Air Field
2038	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
2039	KARNAC	Knowledge Aided Retrieval in Activity Context
2040	KARR	Knight Automated Roving Robot (Knight Rider character)
2041	KATUSA	Korean Augmentation To United States Army
2042	KAZ	Kazakhstan (ISO 3166 trigram)
2043	KBE	Knight Commander of the Order of the British Empire
2044	KBO	Kuiper Belt Object
2045	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2046	kC	Kilocoulomb
2047	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
2048	KCL	King's College London
2049	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
2050	KCS	Kansas City Southern Railway (AAR reporting mark)
2051	KD	Kawasaki Disease,Kraft Dinner
2052	KE	Kenya (FIPS 10-4 country code; ISO 3166 digram),Kinetic Energy,Knowledge Engineering
2053	KEDO	Korean Peninsula Energy Development Organization
2054	KEN	Kenya (ISO 3166 trigram)
2055	KERA	Kentucky Education Reform Act (of 1990)
2056	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
2057	KESR	Kent and East Sussex Railway.
2058	KET	Kentucky Educational Television,Key English Test
2059	kF	Kilofarad
2060	KFC	Kentucky Fried Chicken
2061	KFOR	UN Kosovo Force
2062	KFUPM	King Fahd University of Petroleum & Minerals
2063	KG	Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
2064	KGO	Knight of the Guelphic Order of Hanover
2065	KGZ	Kyrgyzstan (ISO 3166 trigram)
2066	KH	Cambodia (ISO 3166 digram)
2067	kH	Kilohenry
2068	KHL	Kontinental Hockey League
2069	KHM	Cambodia (ISO 3166 trigram)
2070	KHz	Kilohertz
2071	Ki	Kibi
2072	KI	Kiribati (ISO 3166 digram)
2073	KIA	Killed In Action
2074	KIDS	Knowledge-based Integrated Design System
2075	KIR	Kiribati (ISO 3166 trigram)
2076	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
2077	KIT	Keep In Touch
2078	KITECH	Korean Institute of Industrial Technology
2079	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
2080	kJ	Kilojoule
2081	kK	Kilokelvin
2082	KKK	Ku Klux Klan
2083	kL	Kilolitre
2084	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2085	KLOC	Kilo Lines Of Code
2086	KM	Comoros,Knowledge Management
2087	kN	Kilonewton
2088	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
2089	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2090	KO	Knocked Out
2091	KOR	Republic of Korea (ISO 3166 trigram)
2092	KP	Kim Possible
2093	KPMG	Klynveld,Peat,Marwick,Goerdeler
2094	KPNO	Kitt Peak National Observatory
2095	KQ	Kenya Airways (IATA airline designator), Kingman Reef (FIPS 10-4 territory code)
2096	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
2097	Kr	Krypton
2098	KS	Kansas (postal symbol), Republic of Korea (FIPS 10-4 country code)
2099	kS	Kilosiemens
2100	KSC	Kennedy Space Center
2101	KSI	Killed or Seriously Injured
2102	KSU	Kansas State University
2103	KT	Christmas Island (FIPS 10-4 territory code), Knight of the Order of the Thistle, Knights Templar
2104	kT	Kilotesla
2105	KTS	Knight of the Tower and Sword (of Portugal)
2106	KU	Kuwait (FIPS 10-4 country code)
2107	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
2108	kV	Kilovolt
2109	KV	Kosovo
2110	kW	Kilowatt
2111	KW	Kuwait (ISO 3166 digram)
2112	KWB	Kids' WB!
2113	KWT	Kuwait (ISO 3166 trigram)
2114	KX	Cayman Airways (IATA airline designator)
2115	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2116	KZ	Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2117	KZN	KwaZulu-Natal
2118	La	Lanthanum
2119	LA	Laos (FIPS 10-4 country code; ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2120	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2121	LAB	Logistics Assault Base
2122	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2123	LACMA	Los Angeles County Museum of Art
2124	LAD	Laser Aiming Device
2125	LADW	Local Air Defence Warning
2126	LAESI	Local Authority & Emergency Service Information
2127	LAN	Local Area Network
2128	LANL	Los Alamos National Laboratory
2129	LAO	Laos (ISO 3166 trigram)
2130	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2131	LARC	Livermore Advanced Research Computer (cf. LLNL)
2132	LARP	Live-Action Role-Playing
2133	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2134	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2135	LATA	Local Access Transport Area
2136	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2137	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2138	LAW	Light Antitank Weapon
2139	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2140	LB	Lebanon (ISO 3166 digram)
2141	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2142	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2143	LBN	Lebanon (ISO 3166 trigram)
2144	LBNL	Lawrence Berkeley National Laboratory
2145	LBR	Liberia (ISO 3166 trigram)
2146	LBS	Location-Based Services
2147	LBT	Large Binocular Telescope
2148	LBW	Leg Before Wicket
2149	LBY	Libya (ISO 3166 trigram)
2150	LCA	Saint Lucia (ISO 3166 trigram)
2151	LCC	Land Component Commander
2152	LCCP	Light Contingency Communications Package
2153	LCD	Liquid Crystal Display
2154	LCM	Least/Lowest Common Multiple
2155	LCS	League of Legends Championship Series
2156	LDA	Lateral Drift Apparatus (paratroops)
2157	LDC	Lesser Developing/Developed Country
2158	LDL	Low-Density Lipoprotein
2159	LDV	Local Defence Volunteers (British Home Guard)
2160	LDW	Lane Departure Warning (ADAS)
2161	LE	Lebanon (FIPS 10-4 country code)
2162	LEC	Local Exchange Carrier
2163	LED	Light-Emitting Diode
2164	LEGAD	Legal Advice
2165	Legs	level emotion gad speed
2166	LEMOSS	Long-Endurance MObile Submarine Simulator
2167	LEN	Large Extension Node
2168	LEP	Large Electron-Positron collider
2169	LER	Loss-Exchange Ratio
2170	LEU	Low-Enriched Uranium
2171	LF	Low Frequency
2172	LFO	Low Frequency Oscillation / Oscillator
2173	LFTR	Liquid fluoride thorium reactor
2174	LG	Latvia (FIPS 10-4 country code)
2175	LGB	Lesbian,Gay,Bisexual
2176	LGBT	Lesbian,Gay,Bisexual,Transgender
2177	LGBTQ	Lesbian,Gay,Bisexual,Transgender,Queer
2178	LGLO	Love God,Love Others
2179	LGM	Little Green Men
2180	LGS	Landsat Ground Station
2181	LHC	Large Hadron Collider
2182	LHS	Left Hand Side
2183	Li	Lithium
2184	LIBOR	London Interbank Offered Rate
2185	LIBS	Laser Induced Breakdown Spectroscopy
2186	LIE	Liechtenstein (ISO 3166 trigram)
2187	LIGO	Laser Interferometer Gravitational-Wave Observatory
2188	LINEAR	Lincoln Near-Earth Asteroid Research
2189	LISA	Laser Interferometer Space Antenna
2190	LIVE	Liquid Inertial Vibration Eliminator
2191	LJJ	Lord Justices of Appeal
2192	LK	Sri Lanka (ISO 3166 digram)
2193	LKA	Sri Lanka (ISO 3166 trigram)
2194	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2195	LLAD	Low Level Air Defence
2196	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2197	LLC	Limited Liability Company
2198	LLLTV	Low-Light Level Television
2199	LLNL	Lawrence Livermore National Laboratory
2200	LLP	Limited Liability Partnership
2201	LLTR	Low-Level Transit Route
2202	LMAO	Laughing My Ass Off (Internet shorthand)
2203	LMB	Lick My Balls
2204	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2205	LMN	Lifetime Movie Network
2206	LMS	Like My Status (Internet shorthand)
2207	LMV	() Light Motor Vehicle
2208	LNER	London and North Eastern Railway
2209	LNG	Liquefied Natural Gas
2210	LNO	Liaison Officer
2211	LNR	Ligue Nationale de Rugby (French for: 'National Rugby League')
2212	LO	Slovakia (FIPS 10-4 country code)
2213	LOA	Limit Of Advance
2214	LOC	Level of Operational Capability, Limited Operational Capability
2215	LOD	Limit of Detection,see Detection limit
2216	LoD	Lines of Development (UK)
2217	LOFAR	Low Frequency Analysis and Recording
2218	LOGPAC	Logistics Package
2219	LOL	Laughing Out Loud (Internet shorthand)
2220	LOMEZ	Low Altitude Missile Engagement Zone
2221	LONEOS	Lowell Observatory Near-Earth-Object Search
2222	LOOGY	Lefty One-Out GuY,a sometimes pejorative nickname for the left-handed specialist in baseball
2223	LORTID	LOng Range Target IDentification
2224	LOS	Line Of Sight
2225	LOSAT	Line-Of-Sight Anti-Tank (missile)
2226	LOTA	Licentiate of the Orthodontic Technicians Association
2227	LOTIS	Livermore Optical Transient Imaging System
2228	LOTS	Logistics Over-The-Shore
2229	LP	Linkin Park,Linkup Point,Listening Post,Long Playing record,Louisiana Pacific (cf. LP Field)
2230	LPC	Linear Predictive Coding
2231	LPD	Landing Platform Dock (Navy hull classification),Low Probability of Detection
2232	LPG	Liquefied Petroleum Gas (cf. LNG)
2233	LPI	Low Probability of Intercept
2234	LPS	Landsat Processing System,LipoPolySaccharide
2235	LQ	Palmyra Atoll (FIPS 10-4 territory code)
2236	Lr	Lawrencium
2237	LR	Liberia (ISO 3166 digram)
2238	LRC	Logistics iness Center
2239	LRGW	Long-Range Guided Weapon
2240	LRICBM	Limited Range ICBM
2241	LRIP	Low Rate Initial Production
2242	LRP	Logistics Release Point
2243	LRPE	Long-Range Planning Element
2244	LRS	Long Range Surveillance
2245	LRU	Line-Replaceable Unit
2246	LSAT	Law School Admission Test (often pronounced as 'el-SAT')
2247	LSI	Large-Scale Integration
2248	LSIF	Labour Sponsored Investment Fund
2249	LSND	Liquid Scintillator Neutrino Detector
2250	LSO	Lesotho (ISO 3166 trigram)
2251	LSST	Large Synoptic Survey Telescope
2252	LST	Landing Ship,Tank (World War II; also known,not entirely affectionately,as 'Large Slow Target')
2253	LSVW	Light Support Vehicle,Wheeled
2254	LT	Lesotho (FIPS 10-4 country code),Lithuania (ISO 3166 digram)
2255	Lt	Lieutenant
2256	LtC	Lieutenant-Colonel (U.S.)
2257	LTC	Long-Term Costing
2258	Ltd	Limited
2259	LTDP	Long-Term Defence Plan
2260	LTG	Lieutenant General,Lightning (METAR Code)
2261	LTI	Linear Time-Invariant
2262	LTM	Acronym for Laughing To Myself
2263	LTP	Long-Term Potentiation
2264	LTU	Lithuania (ISO 3166 trigram)
2265	LU	Acronym Love You
2266	LU	Loonatics Unleashed
2267	Lu	Lutetium
2268	LUCA	Last Universal Common Ancestor
2269	LUG	Linux User Group
2270	LULU	Locally Unwanted Land Use (urbanism)
2271	LUT	Limited User Test (ing),Local User Terminal
2272	LUVW	Light Utility Vehicle,Wheeled
2273	LUX	Luxembourg (ISO 3166 trigram)
2274	LV	Las Vegas,Latvia (ISO 3166 digram),Launch Vehicle,Leading Vehicle,Leave,Left Ventricle,Level Valve,Linking Verb,Liverpool Victoria
2275	LVA	Latvia (ISO 3166 trigram)
2276	LVAD	Left Ventricular Assist Device,Low-Velocity Airdrop
2277	LVEF	Left Ventricular Ejection Fraction
2278	LW	Land Warrior,Low Water (nautical charts)
2279	Lw	Lawrencium (obsolete 1963)
2280	LWR	Laser warning receiver
2281	LWRC	Land Warfare Resources Corporation
2282	LWS	Land Warrior System
2283	LX	Electrics (theatrical term)
2284	LX	Luxembourg (amateur radio ITU prefix),Swiss International Air Lines (IATA code)
2285	LY	Libya (FIPS 10-4 country code; ISO 3166 digram),Lithuania (amateur radio ITU prefix)
2286	LYAO	Laugh Your Ass Off
2287	LYLAS	Love You Like A Sister
2288	LZ	Bulgaria (amateur radio ITU prefix),Landing Zone
2289	M	Mega-,One thousand (in Roman numerals)
2290	m	Metre,Milli
2291	MA	Madagascar (FIPS 10-4 country code),Marijuana Anonymous,Master of Arts,Massachusetts (postal symbol),Megaampere,Morocco (ISO 3166 digram)
2292	Ma	Megaannum
2293	mA	Milliampere
2294	MAA	Mathematical Association of America
2295	MAAC	Metro Atlantic Athletic Conference
2296	MACE	Multi-Agent Computing Environment
2297	MACHO	MAssive Compact Halo Object
2298	MADD	Mothers Against Drunk Driving,MyoAdenylate Deaminase Deficiency,Multiply-Add
2299	MAF	Maintenance Action Form
2300	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2301	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2302	MAGTF	Marine Air-Ground Task Force
2303	Mahasz	Magyar Hanglemezkiadók Szövetsége (Hungarian for: 'Association of Hungarian Record Companies')
2304	MALD	Miniature Air-Launched Decoy
2305	MANPADS	MAN-Portable Air Defence System
2306	MANPRINT	MANpower and PeRsonnel INTegration
2307	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2308	MAOI	Monoamine oxidase inhibitor
2309	MAPS	Monitoring Avian Productivity and Survivorship
2310	MAR	Morocco (ISO 3166 trigram)
2311	MarBEF	Marine Biodiversity and Ecosystem Functioning
2312	MARCENT	United States Marine Forces Central Command
2313	MARFORCC	Marine Force Component Commander
2314	MASAS	Monte Agliale Supernovae and Asteroid Survey
2315	Maser	Microwave Amplification by Stimulated Emission of Radiation
2316	MASH	Mobile Army Surgical Hospital
2317	MASINT	Measurement And Signature Intelligence
2318	MAVS	Mobile Artillery Vehicle System
2319	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2320	MBCC	Migratory Bird Conservation Commission (U.S.)
2321	MBCS	Multi-Byte Character Set
2322	MBI	Moody Bible Institute
2323	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2324	MBM	Meat and Bone Meal
2325	MBT	Main Battle Tank
2326	MBTI	Myers-Briggs Type Indicator
2327	mC	Millicoulomb
2328	MCDL	Model Composition Definition Language
2329	MCFT	Modified Compression Field Theory
2330	MCG	Melbourne Cricket Ground
2331	MCIS	Mellon Collie and the Infinite Sadness
2332	MCM	Mine Counter-Measures
2333	MCMV	Mine Counter-Measure Vessel
2334	MCR	My Chemical Romance
2335	MCSF	Marine Corps Security Forces
2336	MCT	Movement Control Team
2337	MCTIS	Mounted Co-operative Target Identification System
2338	Md	Mendelevium
2339	MDNA	Madonna's 12th studio album title (2012)
2340	MDO	Membership Driven Organisation
2341	MDP	Markov Decision Process
2342	MDT	Mountain Daylight Time (UTC-6 hours)
2343	MDV	Maldives (ISO 3166 trigram)
2344	Me	Messerschmitt
2345	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2346	MECO	Main engine cutoff (NASA code for point in Space Shuttle assent when three main engines are shut down prior to External Tank (ET) separation)
2347	MEDEVAC	Medical evacuation
2348	MEDS	Mission Essential Data Set
2349	MEG	MagnetoEncephaloGraphy
2350	MELT	Metallic Line/Loop Test (ing)
2351	MEMS	Microelectromechanical System
2352	MER	Mars Exploration Rover
2353	MERL	Mitsubishi Electric Research Laboratories
2354	MES	Manufacturing Execution Systems
2355	METAR	[Meteorological] Aviation Routine weather report
2356	METOC	Meteorological and Oceanographic
2357	MeV	Megaelectronvolt
2358	MEX	Mexico (ISO 3166 trigram)
2359	MEZ	Missile Engagement Zone
2360	mF	Millifarad
2361	MGPAM	My Gym Partner's a Monkey
2362	MGS	Mobile Gun System
2363	mH	Millihenry
2364	MHC	Major Histocompatibility Complex
2365	MHHW	Mean Higher High Water (nautical charts)
2366	MHL	Marshall Islands (ISO 3166 trigram)
2367	MHLW	Mean Higher Low Water (nautical charts)
2368	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2369	MHW	Mean High Water (nautical charts)
2370	MHWN	Mean High Water Neaps (nautical charts)
2371	MHWS	Mean High Water Springs (nautical charts)
2372	MHz	Megahertz
2373	Mi	Mebi
2374	MIA	Missing In Action
2375	MICLIC	Mine Clearing Line Charge
2376	MICOM	Missile Command
2377	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2378	MIDAS	Man-machine Integration Design and Analysis System
2379	MIDI	Musical Instrument Digital Interface
2380	MIDS	Multi-Function Information Distribution System
2381	MIFG	Shallow Fog (METAR Code)
2382	MIKE	Monitoring of Illegal Killing of Elephants
2383	MIL	Man-In-the-Loop
2384	MILC	Mirrorless interchangeable-lens camera
2385	MILF	Mother I'd Like to Fuck
2386	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2387	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2388	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2389	MIRV	Multiple Independent Reentry Vehicle
2390	MISREP	Mission Report
2391	MISSI	Multilevel Information System Security Initiative
2392	MITL	Man-In-The-Loop
2393	MITS	see entry
2394	mJ	Millijoule
2395	MJD	Modified Julian Day
2396	mK	Millikelvin
2397	MKG	Michael Kidd-Gilchrist (American basketball player)
2398	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2399	mL	Millilitre
2400	MLB	Major League Baseball
2401	MLC	Member of the Legislative Council (in India)
2402	MLE	Maximum likelihood estimation
2403	MLHW	Mean Lower High Water (nautical charts)
2404	MLI	Mali (ISO 3166 trigram)
2405	MLL	Major League Lacrosse
2406	MLLW	Mean Lower Low Water (nautical charts)
2407	MLP	My Little Pony
2408	MLRS	Multiple-Launch Rocket System
2409	MLT	Malta (ISO 3166 trigram)
2410	MLW	Mean Low Water (nautical charts)
2411	MLWN	Mean Low Water Neaps (nautical charts)
2412	MLWS	Mean Low Water Springs (nautical charts)
2413	Mm	Megametre
2414	mm	Millimetre
2415	MMEV	Multi-Mission Effects Vehicle
2416	MMI	Magical MonkeyZ Inc.
2417	MMI	Man-Machine Interface
2418	MMI	McLean Meditation Institute
2419	MMIC	McLean Meditation Institute Certified
2420	MMO	Massively Multiplayer Online (computer game)
2421	MMOR	Master of Management in Operations Research
2422	MMORPG	Massively multiplayer online role-playing game
2423	MMPR	Mighty Morphin Power Rangers
2424	MMS	Multimission Modular Spacecraft
2425	Mn	Manganese
2426	mN	Millinewton
2427	MNB	Multinational Brigade
2428	MNE	Montenegro (ISO 3166 trigram)
2429	MNMF	Multi-National Maritime Force
2430	MNP	Northern Mariana Islands (ISO 3166 trigram)
2431	MNS	Mission Needs Statement
2432	Mo	Molybdenum
2433	MOA	Museum of Art (Brigham Young University)
2434	MOCAS	Mechanization Of Contract Administration Services
2435	MoD	Ministry of Defence (United Kingdom) and various other countries
2436	modem	Modulator-Demodulator
2437	Moe	Marvel of entertainment
2438	MOE	Measure Of Effectiveness
2439	MOF	Ministry of Finance (Japan)
2440	MOFA	Ministry of Foreign Affairs (Japan)
2441	MOID	Minimum Orbital Intersection Distance
2442	MOJWA	Movement for Oneness and Jihad in West Africa
2443	MOLO	Mobile Other Licensed Operator (UK)
2444	MOM	Master's Degree in Oriental medicine
2445	MOM	Message Oriented Middleware
2446	MoM	Multiple of the median
2447	MoMA	Museum of Modern Art (NYC)
2448	MOND	Modified Newtonian Dynamics
2449	MOO	Measure Of Outcome
2450	MOPP	Mission-Oriented Protective Posture
2451	MORP	Meteorite Observation and Recovery Project
2452	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2453	MOT	Ministry of Transport (UK)
2454	MOTA	Member of the Orthodontic Technicians Association
2455	MOTESS	Moving Object and Transient Event Search System
2456	MOU	Memorandum Of Understanding
2457	MOW	Maintenance of way (also MW)
2458	MOZ	Mozambique (ISO 3166 trigram)
2459	MPa	Megapascal
2460	mPa	Millipascal
2461	MPAA	Motion Picture Association of America
2462	MPEC	Minor Planet Electronic Circular
2463	MPEG	Motion Pictures (Coding) Experts Group
2464	MPEV	Multi-Purpose Engineering Vehicle
2465	MPF	Maritime Prepositioning Force
2466	MPFC	Medial PreFrontal Cortex
2467	MPG	Miles Per Gallon
2468	MPMC	Medial PreMotor Cortex
2469	MPSI	Member of the Pharmaceutical Society of Ireland
2470	MPSoC	MultiProcessor System-on-Chip
2471	MPSRON	Maritime Propositioning Ship Squadron
2472	MR	Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2473	MRAV	Multi-Role Armoured Vehicle
2474	MRBM	Medium Range Ballistic Missile
2475	MRC	Maintenance Requirements Card
2476	MRD	Motorized Rifle Division
2477	MRGW	Medium-Range Guided Weapon
2478	MRI	Magnetic Resonance Imaging
2479	MRL	Multiple Rocket Launcher
2480	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2481	MRS	Magnetic Resonance Spectroscopy
2482	MRSA	Methicillin-resistant Staphylococcus aureus
2483	MRTFB	U.S. Major Range and Test Facility Base
2484	Ms	Megasecond
2485	mS	Millisiemens
2486	MSD	Minimum Safe Distance
2487	MSDB	Multi Source Data Base
2488	MSE	Multiple Subscriber Element
2489	MSG	Message
2490	MSLP	Mean Sea Level Pressure
2491	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2492	MSO	Multiple System Operator
2493	MSPB	Merit Systems Protection Board
2494	MSSA	Methicillin-susceptible Staphylococcus aureus
2495	Mt	Meitnerium
2496	mT	Millitesla
2497	MTBF	Mean Time Between Failures
2498	MtF	Male-to-female transsexual
2499	MTG	Magic: The Gathering
2500	MTQ	Martinique (ISO 3166 trigram)
2501	MTT	Methylthiazol tetrazolium (assay)
2502	MTTF	Mean Time To Failure
2503	MTTR	Mean Time To Recover
2504	MTWS	MAGTF Tactical Warfare System
2505	MUS	Mauritius (ISO 3166 trigram)
2506	mV	Millivolt
2507	MVC	Missouri Valley Conference
2508	MVFC	Missouri Valley Football Conference
2509	MVNO	Mobile virtual network operator
2510	mW	Milliwatt
2511	MWESH	Machismo Wizards Extended SHelter (operating system)
2512	MWI	Malawi (ISO 3166 trigram)
2513	MWOA	Mount Wilson Observatory Association
2514	MWTB	Mounted Warfare Test Bed
2515	MY	Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2516	MYOB	Mind Your Own Business
2517	MYS	Malaysia (ISO 3166 trigram)
2518	MYT	Mayotte (ISO 3166 trigram)
2519	n	Nano
2520	N3F	National Fantasy Fan Federation
2521	nA	Nanoampere
2522	Na	Sodium (Latin Natrium)
2523	NAA	N-Acetylaspartate
2524	NAAD	North American Air Defense
2525	NAAQS	National Ambient Air Quality Standards
2526	NAAWS	NATO Anti-Air Warfare System
2527	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2528	NACC	North Atlantic Cooperation Council
2529	NACISA	NATO Communications and Information Systems Agency
2530	NACMA	NATO Air Command and Control System Management Agency
2531	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2532	NAEC	U.S. Naval Air Engineering Center
2533	NAFERA	Native American Free Exercise of Religion Act
2534	NAFLD	NonAlcoholic Fatty Liver Disease
2535	NAFO	Northwest Atlantic Fisheries Organization
2536	NAFTA	North American Free Trade Agreement
2537	NAGPRA	Native American Graves Protection and Repatriation Act
2538	NAICS	North American Industry Classification System
2539	NAIL	Neurotics Anonymous
2540	NAILS	National Airspace Integrated Logistics System
2541	NAIRU	Non Accelerating Inflation Rate of Unemployment
2542	NAK	Negative Acknowledge
2543	NAM	Namibia (ISO 3166 trigram)
2544	NAMBLA	North American Man-Boy Love Association
2545	NAMRL	Naval Aerospace Medical Research Laboratory
2546	NaN	Not A Number (computing)
2547	NAO	UK National Audit Office
2548	NAPS	Navy Acquisition Procedures Supplement
2549	NARA	(U.S.) National Archives and Records Administration
2550	NARAL	National Abortion Rights Action League
2551	NARDAC	Naval Regional Data Automation Center
2552	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2553	NARPV	National Association for Remotely Piloted Vehicles
2554	NASCAR	National Association for Stock Car Auto Racing
2555	NASDAQ	National Association of Securities Dealers Automated Quotations
2556	NASED	National Association of State Election Directors [1][2]
2557	NASH	Non-Alcoholic Steatohepatitis
2558	NASP	National Aerospace Plane
2559	NASS	National Association of Secretaries of State [3]
2560	NatGeo	National Geographic
2561	NaUKMA	National University of Kyiv-Mohyla Academy
2562	NAV	Navigation[al]
2563	NAVCAMS	Naval Communications Area Master Station
2564	NAVCC	National Audio-Visual Conservation Center
2565	NAVCENT	Naval Forces U.S. Central Command
2566	NAVDAC	Naval Data Automation Command
2567	NAVEUR	Naval Forces U.S. European Command
2568	NAVFOR	Naval Force
2569	NAVMACS	Naval Modular Automatic Communication Subsystem
2570	NAVNET	Navy Network
2571	NAVS	Non-Cooperative Airborne Vector Scoring
2572	NAVSAT	Navigation Satellite
2573	NAVSPACECOM	U.S. Navy Space Command
2574	NAVSPASUR	U.S. Naval Space Surveillance System
2575	NAVSTAR	Navigation Satellite Timing And Ranging
2576	NAVTACNET	Navy Tactical Network
2577	NAWC	U.S. Naval Air Warfare Center
2578	Nb	Niobium
2579	NBA	National Basketball Association
2580	NBL	National Basketball League (Australia)
2581	NBT	Nitroblue tetrazolium (assay)
2582	nC	Nanocoulomb
2583	NCA	National Command Authority
2584	NCAR	U.S. National Center for Atmospheric Research
2585	NCB	National Codification Bureau
2586	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2587	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2588	NCDDR	U.S. National Center for the Dissemination of Disability Research
2589	NCI	U.S. National Cancer Institute
2590	NCL	New Caledonia (ISO 3166 trigram)
2591	NCLR	National Council of La Raza
2592	NCMO	No Commitment Make Out
2593	NCO	Non-Commissioned Officer
2594	NCP	Net Contracted Purchases
2595	NCR	National Cash Register Co.
2596	NCTR	Non-Co-operative Target Recognition
2597	NCW	Network Centric Warfare
2598	Nd	Neodymium
2599	NDAA	U.S. National Defense Authorization Act
2600	NDBP	Non-Departmental Public Body (Scotland)
2601	NDP	New Democratic Party (Canada)
2602	NDS	Nintendo DS
2603	Ne	Neon
2604	NECTEC	National Electronics and Computer Technology Center (Thailand)
2605	NEMS	National Energy Modeling System (USDOE-EIA)
2606	NEPA	National Environmental Policy Act
2607	NER	Niger (ISO 3166 trigram)
2608	NERICA	New Rice for Africa
2609	NESP	NSA/CSS Enterprise Standards Program
2610	NET	National Educational Television
2611	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2612	NETL	(US) National Energy Technology Laboratory
2613	NETWARS	Network Warfare Simulation
2614	NEX	Navy EXchange
2615	nF	Nanofarad
2616	NF	Norfolk Island (ISO 3166 digram)
2617	NFER	National Foundation for Educational Research
2618	NFG	No Fucking Good
2619	NFHS	National Federation of State High School Associations
2620	NFI	Not F****** Interested
2621	NFK	Norfolk Island (ISO 3166 trigram)
2622	Nfld	Newfoundland
2623	NFPA	National Fluid Power Association (United States)
2624	NFT	No Further Text
2625	NGA	U.S. National Geospatial-Intelligence Agency, Nigeria (ISO 3166 trigram)
2626	NGATS	New Generation Army Targetry System
2627	NGH	Northern General Hospital
2628	NGO	non-governmental organization
2629	NGS	Naval Gunfire Support
2630	nH	Nanohenry
2631	NHANES	National Health and Nutrition Examination Survey
2632	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2633	NHB	No Holds Barred radio (Link)
2634	NHL	National Hockey League
2635	NHRA	National Hot Rod Association
2636	NHS	National Health Service (UK)
2637	Ni	Nickel
2638	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2639	NIAG	NATO Industrial Advisory Group
2640	NIAID	National Institute of Allergies and Infectious Disease
2641	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2642	NIB	New In Box (Internet auction/trading listings)
2643	NIBP	Non-invasive blood pressure monitor
2644	NicA	Nicotine Anonymous
2645	NICAP	National Investigations Committee on Aerial Phenomena
2646	NICE	UK. National Institute for Health and Clinical Excellence
2647	NICHD	National Institute of Child Health and Human Development [4]
2648	NICP	National Inventory Control Point
2649	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2650	NIDRR	National Institute on Disability Research and Rehabilitation
2651	NIEHS	National Institute of Environmental Health Sciences
2652	NIIN	National Item Identification Number
2653	NIMA	National Imagery and Mapping Agency (became NGA)
2654	NIMBY	Not In My Back Yard (See NOME)
2655	NIMG	Not In My Generation
2656	NIN	Nine Inch Nails (band)
2657	NIPR	National Institute of Polar Research (Japan)
2658	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2659	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2660	NISCAP	NSA Information System Certification and Accreditation Program
2661	NISER	National Institute of Science Education and Research
2662	NIST	National Institute of Standards and Technology
2663	NITFS	National Imagery Transmission Format Standard
2664	NIU	Niue (ISO 3166 trigram)
2665	nJ	Nanojoule
2666	NJ	New Jersey (postal symbol)
2667	NJHS	National Junior Honor Society
2668	NJPW	New Japan Pro Wrestling
2669	nK	Nanokelvin
2670	NKA	No Known Allergies
2671	nL	Nanolitre
2672	NLB	Non-Linear Battlefield
2673	NLD	Netherlands (ISO 3166 trigram)
2674	NLF	National Liberation Front (disambiguation)
2675	NLL	National Lacrosse League
2676	NLP	Natural Language Processing,Neuro-Linguistic Programming (pseudoscience)
2677	NLRB	National Labor Relations Board
2678	NLW	Non-Lethal Weapon
2679	nm	Nanometre
2680	NM	New Mexico (postal symbol)
2681	NMCI	Navy Marine Corps Intranet
2682	NMCS	Not Mission Capable Supply (SM&R code)
2683	NMD	U.S. National Missile Defense
2684	NMHNFG	Not Made Here,No Fucking Good
2685	NMN	No middle name
2686	NMR	Nuclear Magnetic Resonance
2687	NMSG	NATO Modelling and Simulation Group
2688	nN	Nanonewton
2689	NNE	North North-East
2690	NNSA	U.S. National Nuclear Security Administration
2691	NNW	North North-West
2692	NO	Nitric Oxide,Normally Open,Norway (ISO 3166 and FIPS 10-4 country code digram)
2693	No	Nobelium
2694	NOAA	U.S. National Oceanic and Atmospheric Administration
2695	NOAF	Norwegian Air Force
2696	NOAO	National Optical Astronomy Observatory
2697	NOC	UK. National Oceanography Centre
2698	NODEF	NATO Oceanographic Data Exchange Format
2699	NOGI	New Orleans Grande Isle (award for diving)
2700	NOLA	New Orleans,Louisiana (LA is the official postal code for Louisiana)
2701	NOLF	Navy OutLying Field
2702	NoMBO	Non-mine,Mine-like Bottom Object
2703	NOME	Not on Mars Either
2704	NOME	Not on Mars Either (see NIMBY)
2705	NOPA	National Office Products Alliance,National Office Products Association
2706	NOR	Norway (ISO 3166 trigram)
2707	NORELPREF	No religious preference
2708	NORTHAG	Northern Army Group
2709	NOS	Network Operating System,New Old Stock (Internet auction/trading listings),Nitric Oxide Synthase (enzyme)
2710	NOSA	NATO OSI Security Architecture
2711	NOTAFLOF	No One Turned Away For Lack Of Funds
2712	NOW	National Organization for Women
2713	NP	National Permit,A permit in India for trucks so they can go anywhere in the nation
2714	Np	Neap tide (nautical charts),Neptunium
2715	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2716	NPB	Nippon Professional Baseball
2717	NPC	National Postgraduate Committee,National Provincial Championship (New Zealand rugby competition,now defunct),Navigation Planning Chart,Non-Player Character (role-playing games)
2718	NPCS	Non-Passenger Coaching stock (in Railways)
2719	NPD	Nationaldemokratische Partei Deutschlands (German)
2720	NPDI	New Product Development and Introduction
2721	NPG	Needline/Network Participation Group
2722	NPH	Normal Pressure Hydrocephalus
2723	NPL	National Priorities List,Nepal (ISO 3166 trigram)
2724	NPO	nothing by mouth
2725	NPOV	Neutral Point Of View
2726	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2727	NQOCD	Not Quite Our Class,Dear (or Darling). (Upper-class English slang)
2728	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2729	NRA	National Rifle Association
2730	NRAO	National Radio Astronomy Observatory
2731	NRC	(U.S.) National Research Council,Nuclear Regulatory Commission (U.S.)
2732	NRDC	(U.S.) Natural Resources Defense Council
2733	NREL	(U.S.) National Renewable Energy Laboratory
2734	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2735	NRMP	National Resident Matching Program (U.S. medicine)
2736	NRO	(U.S.) National Reconnaissance Office
2737	NRT	Near Real Time
2738	NRTA	National Rat Terrier Association,National Retail Tenants Association,National Retired Teachers Association,Northwest Regional Transmission Association
2739	NRU	Nauru (ISO 3166 trigram)
2740	ns	Nanosecond
2741	nS	Nanosiemens
2742	NS	Norfolk Southern Railway (AAR reporting mark),Nova Scotia (postal symbol),Suriname (FIPS 10-4 country code)
2743	NSA	U.S. National Security Agency,Naval Support Activity,No Strings Attached
2744	NSABB	National Science Advisory Board for Biosecurity
2745	NSAID	Non-Steroidal Anti-Inflammatory Drug
2746	NSB	Norges Statsbaner (Norwegian State Railways)
2747	NSC	National Security Council
2748	NSDAP	Nationalsozialistische Deutsche Arbeiterpartei (German: 'German National Socialist Workers Party',the formal name of the Nazi Party)
2749	NSDL	National Science Digital Library (US)
2750	NSG	National System for Geospatial-Intelligence
2751	NSN	National Stock Number
2752	NSNA	National Student Nurses' Association
2753	NSO	National Standardization Office (ABCA)
2754	NSS	(U.S.) Naval Simulation System
2755	NST	(UK) Nimrod Software Team
2756	NSTAC	National Security Telecommunications Advisory Committee
2757	NSV	Nikitin-Sokolov-Volkov heavy machine gun (Russian НСВ Никитина-Соколова-Волкова) ru:ПулеметНСВ-12,7 'Утес'
2758	NSW	New South Wales (postal symbol)
2759	nT	Nanotesla
2760	NT	National Trust (UK),Saudi-Iraqi neutral zone (ISO 3166 digram; obsolete 1993),New Technology (Windows NT),Northern Territory (Australia) (postal symbol),Northwest Territories (Canada) (postal symbol)
2761	NTC	National Training Center,Negative Temperature Coefficient (thermistor)
2762	NTDS	Naval Tactical Data System
2763	NTP	Network Time Protocol
2764	NTR	Network Time Reference
2765	NTRA	National Thoroughbred Racing Association
2766	NTSB	National Transportation Safety Board
2767	NTSC	National Television Standards Committee (colloquially,Never Twice the Same Color)
2768	NTV	Non-Tactical Vehicle
2769	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2770	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2771	NU	Nicaragua (FIPS 10-4 country code),Niue (ISO 3166 digram),Nunavut (postal symbol)
2772	NUL	Null character (ASCII code of control character),National Urban League
2773	NUTS	Nuclear Utilization Target Selection
2774	NUWC	U.S. Naval Undersea Warfare Center
2775	nV	Nanovolt
2776	NVEOL	Night Vision and Electro-Optics Laboratory
2777	NVESD	CERDEC Night Vision and Electronic Sensors Directorate,Fort Belvoir,Virginia
2778	NVG	Night Vision Goggles
2779	NVL	Night Vision Laboratory
2780	nW	Nanowatt
2781	NW	North-West
2782	NW	Nuclear Weapon
2783	NWA	National Wrestling Alliance
2784	NWF	National Wildlife Federation
2785	NWFZ	Nuclear-Weapon-Free Zone
2786	NWHN	U.S. National Women's Health Network
2787	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2788	NWOAHM	New Wave of American Heavy Metal
2789	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2790	NWRA	National Wildlife Rehabilitators Association
2791	NWSL	National Women's Soccer League (U.S.)
2792	NWT	North-West Territories
2793	NXA	21st arcade game in the Pump It Up series
2794	NXD	Native XML
2795	NXE	New Xbox Experience
2796	NXG	New Cross Gate station
2797	NXL	National XBall League
2798	NXN	Nike Cross Nationals
2799	NY	New York (postal symbol)
2800	NYC	New York City
2801	NYT	New York Times
2802	NYHA	New York Heart Association
2803	NYO	National Youth Orchestra of Great Britain
2804	NYSE	New York Stock Exchange
2805	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2806	NZC	New Zealand Cricket
2807	NZL	New Zealand (ISO 3166 trigram)
2808	NzL	Noze looan (online/event listings)
2809	NZOSS	New Zealand Open Source Society
2810	NZRU	New Zealand Rugby Union
2811	OAC	On Approved Credit
2812	OAP	Old Age Pensioner (UK)
2813	OARSI	Osteoarthritis Research Society International
2814	OAS	Organization of American States
2815	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2816	OASIS	Ontario Association of Sewage Industry Services
2817	OASP	Operational Analysis Support Paper/Plan
2818	OAU	Organization for African Unity
2819	OBE	Officer of the Order of the British Empire
2820	OBX	Outer Banks (North Carolina)
2821	OC	Officer Commanding
2822	OCD	Obsessive-Compulsive Disorder
2823	OCFS	Oracle Cluster File System
2824	OCFS2	Oracle Cluster File System Release 2
2825	OCMCC	[2] Orchard County MCC
2826	OCN	Oncology Certified Nurse
2827	OCO	Oort Cloud Object
2828	OCR	Optical Character Recognition
2829	OCS	see entry
2830	ODAS	OCA-DLR Asteroid Survey
2831	ODBC	Open DataBase Connectivity
2832	OEA	(U.S.) Office of Economic Adjustment
2833	OECD	Organisation for Economic Co-operation and Development (international)
2834	OED	Oxford English Dictionary
2835	OEG	Operation Exposure Guidance
2836	OEIS	On-Line Encyclopedia of Integer Sequences
2837	OEM	Original Equipment Manufacturer
2838	OFA	Occipital Face Area
2839	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2840	OGC	Open Geospatial Consortium
2841	OGD	Other Government Department
2842	OGO	Other Government Organization
2843	OH	Ohio (postal symbol)
2844	OHC	OverHead-Cam engine
2845	OHHLA	Original Hip-Hop Lyrics Archive
2846	OHIP	Ontario Health Insurance Plan
2847	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2848	OHP	Observatoire de Haute-Provence
2849	OHSS	Ovarian Hyperstimulation Syndrome
2850	OIC	Officer In Charge
2851	OIF	Operation Iraqi Freedom
2852	OIOC	Oriental & India Office Collections (in the British Library)
2853	OJT	On-the-Job Training
2854	OKC	Oklahoma City
2855	OLED	Organic Light-Emitting Diode
2856	OLS	Operational Linescan System
2857	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2858	OME	Osaka Mercantile Exchange
2859	OMFG	Oh My Fucking God
2860	OMG	Oh My God or Or My Gosh
2861	OMGW	Oh My Gosh it's Windy
2862	OMN	Oman (ISO 3166 trigram)
2863	OMNCS	U.S. Office of the Manager for the National Communications System
2864	OMP	Order of Mapungubwe in Platinum
2865	OMS	Order of Mapungubwe in Silver
2866	OMT	Object Model Template
2867	ON	Ontario (postal symbol)
2868	ONC	Orthopaedic Nurse Certified
2869	ONG	Orthodontic National Group
2870	ONI	(U.S.) Office of Naval Intelligence
2871	ONS	Operational Needs Statement
2872	OOAD	Object Oriented Analysis and Design
2873	OOBE	Out-of-body experience
2874	OOCL	Orient Overseas Container Line
2875	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2876	OOF	Out of Facility
2877	OOMF	One Of My Followers
2878	OOO	Out Of the Office
2879	OOTW	Operations Other Than War
2880	OP	Observation Point/Post,Ocean Pacific (surfwear and swimwear brand),Original Poster (internet),Order Point,in inventory management; the inventory state at which more items should be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached,order OQ new items),Overpowered,often used to refer to fictional characters (e.g. Superman) or game mechanics (e.g. the Black Lotus in Magic: the Gathering) that are considered disproportionately strong
2881	OPAC	Online Public Access Catalogue
2882	OPCON	Operational control
2883	OPCW	Organisation for the Prohibition of Chemical Weapons
2884	OPEC	Organization of the Petroleum Exporting Countries
2885	OPFOR	Opposing force
2886	OPINTEL	Operational Intelligence
2887	OPLAN	Operation plan (also OpPlan)
2888	OPORD	Operation order
2889	OPSEC	Operations security,Open Platform for Security
2890	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2891	OPTAR	Operational target
2892	OPV	Offshore Patrol Vessel
2893	OQ	Order Quantity,in inventory management; the quantity of new items to be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached,order OQ new items)
2894	OR	Operating Room (surgery),Operational/Operations Research,Oregon (postal symbol),overreciprocation,when the leader of an inner circle friendship contacts a friend more than is wanted or reasonable
2895	ORAU	Oak Ridge Associated Universities
2896	ORB	Object Request Broker
2897	ORBAT	Order of Battle
2898	ORD	Office of Research and Development,Operational Requirements Document
2899	ORF	Operational iness Float
2900	ORISE	Oak Ridge Institute for Science and Education
2901	ORNL	Oak Ridge National Laboratory
2902	ORR	Oak Ridge Reservation (U.S. DOE),Office of Rail Regulation (UK government),Office of Refugee Resettlement,(CIA) Office of Research and Reports,Operational iness Rate,Operational iness Review
2903	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2904	OS	Operating System
2905	Os	Osmium
2906	OSA	Order of St. Augustine
2907	OSCE	Organisation for Security and Cooperation in Europe
2908	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2909	OSDL	Open Source Development Labs
2910	OSE	Own Separate Entrance
2911	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2912	OSETI	Optical SETI also Optical SETI
2913	OSHA	Occupational Safety and Health Administration
2914	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2915	OSIA	(U.S.) On-Site Inspection Agency
2916	OSIRIS	Optical,Spectroscopic,and Infrared Remote Imaging System (astronomical system on the Rosetta spacecraft),Optical System for Imaging and low Resolution Integrated Spectroscopy (astronomical system on the land-based Gran Telescopio Canarias)
2917	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2918	OSM	One Saturday Morning
2919	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2920	OSPA	Operations Security Professional's Association site of OSPA
2921	OSPA	Oregon School Psychologists Association [3]
2922	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2923	OSU	Ohio State University,Oklahoma State University
2924	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2925	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2926	OTC	Over-The-Counter (drugs)
2927	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2928	OTEA	(U.S. Army) Operational Test Evaluation Agency
2929	OTI	Office of Transition Initiatives (United States Agency for International Development)
2930	OTOH	On The Other Hand
2931	OTS	Off the scale,sexually untouchable except for a lot of money
2932	OTSBH	Over The Shoulder Boulder Holder
2933	OTW	On The Way
2934	OTYBL	Over To You Blue Leader
2935	OTYRL	Over To You Red Leader
2936	OU	University of Oklahoma
2937	OW	Old Wykehamist
2938	OWN	Oprah Winfrey Network
2939	OX	IATA code for Orient Thai Airlines
2940	OXC	Optical cross-connect
2941	OXM	Official Xbox Magazine
2942	OXT	Oxytocin
2943	OZ	(?) Australia
2944	p	pico
2945	P2P	Peer-to-peer (networking)
2946	pA	picoampere
2947	PAA	Position Area for Artillery
2948	PABX	Private Automated Branch eXchange (company phone system)
2949	PACOM	(U.S.) Pacific Command
2950	PADI	Professional Association of Diving Instructors
2951	PAEK	PolyArylEtherKetone
2952	PAFC	Plymouth Argyle Football Club
2953	PAH	Polycyclic aromatic hydrocarbon
2954	PAHO	Pan American Health Organization
2955	PAK	Pakistan (ISO 3166 trigram)
2956	PAM	Precision Attack Missile
2957	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2958	PARC	Palo Alto Research Center
2959	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2960	PARP	(NATO Partnership for Peace) Planning And Review Process
2961	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2962	PAS	See entry
2963	PASR	Personnel Accounting and Strength Reporting
2964	PATH	Port Authority Trans-Hudson
2965	PAYD	Pay As You Drive
2966	PAYE	Pay As You Earn
2967	Pb	Lead (Latin Plumbum)
2968	PB	PolyButylene
2969	PBB	PolyBrominated Biphenyl
2970	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2971	PBD	PolyButaDiene
2972	PBDE	PolyBrominated Diphenyl Ether
2973	PBI	PolyBenzImidazole
2974	PBN	PolyButylene Naphthalate
2975	PBOH	Please Become Old History
2976	PBT	PolyButylene Terephthalate
2977	PBX	Private Branch eXchange (company phone system)
2978	pC	picocoulomb
2979	PCAS	Planet-Crossing Asteroid Survey
2980	PCB	see entry
2981	PCCB	Porsche Ceramic Composite Brake
2982	PCCIP	President's Commission on Critical Infrastructure Protection
2983	PCE	PerChlorEthylene
2984	PCIe	Peripheral Component Interconnect Express (computer bus)
2985	PCL	Passive Coherent Location
2986	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2987	PCN	Pitcairn Islands (ISO 3166 trigram)
2988	PCPI	Physician Consortium for Performance Improvement (AMA)
2989	PCR	Polymerase chain reaction
2990	PCSSD	Pulaski County Special School District
2991	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
2992	Pd	Palladium
2993	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
2994	PDL	Pure Dumb Luck (Texan punk band)
2995	PDN	Pull-Down Network
2996	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
2997	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
2998	PE	Professional Engineer
2999	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
3000	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
3001	PEEK	PolyEtherEtherKetone
3002	PEET	Partnerships for Enhancing Expertise in Taxonomy
3003	PEK	PolyEtherKetone
3004	PEPFAR	President's Emergency Plan For AIDS Relief
3005	PER	Peru (ISO 3166 trigram)
3006	perl	usually lower case Practical Extraction and Report Language
3007	PES	PolyEtherSulfone
3008	PEST	UK Public Engagement with Science and Technology
3009	PETE	PolyEthyleneTErephthalate
3010	PETP	PolyEthyleneTerePhthalate
3011	pF	picofarad
3012	PFD	Permanent Fund Dividend = personal flotation device
3013	PFE	Permanent Forest Estate
3014	PfP	Partnership for Peace
3015	Pg	petagram
3016	pg	picogram
3017	PGCE	Postgraduate Certificate in Education
3018	PGD	Pre-implantation Genetic Diagnosis
3019	PGENI	Pharmaco-Genetics for Every Nation Initiative
3020	PGH	Pre-implantation Genetic Haplotyping
3021	PGM	Precision-Guided Munition
3022	PGP	Pretty Good Privacy
3023	PHL	Philippines (ISO 3166 trigram)
3024	PHQ	Patient Health Questionnaire
3025	Pi	Pebi
3026	PIB	PolyIsoButylene
3027	PIC	Person In Charge
3028	PICNIC	Problem In Chair Not In Computer
3029	PICS	Private Investment Capital Subscription
3030	PIF	Partners in Flight
3031	PIG	Pipeline Inspection Gauge
3032	PIN	Personal Identification Number
3033	PINF	People In Need Foundation (Czech charitable organisation)
3034	PIPA	Program on International Policy Attitudes
3035	PIR	Priority Intelligence Requirement
3036	PIRA	Provisional Irish Republican Army
3037	PIREPS	Pilot Reports
3038	PITA	Pain In The Ass
3039	PJ	petajoule
3040	pJ	picojoule
3041	PJHQ	Permanent Joint Headquarters
3042	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
3043	PKI	Public Key Infrastructure (cryptography)
3044	PKU	Phenylketonuria
3045	pL	picolitre
3046	PLAID	Precision Location and Identification
3047	PLB	Personal Locator Beacon
3048	PLC	Public Limited Company (British)
3049	PLCC	Plastic Leaded Chip Carrier (electronics)
3050	PLD	Probable Line of Deployment
3051	PLEBS	People Lacking Everyday Basic Skills
3052	PLF	Parachute Landing Fall
3053	PLIF	Planar Laser-Induced Fluorescence
3054	PLL	Phase-Locked Loop (electronics)
3055	PLM	Polarized Light Microscope/Microscopy
3056	PLMBA	Phospholipid Bilayer Microarray
3057	Pln	Platoon
3058	PLO	Palestine Liberation Organization
3059	PLOKTA	Press Lots Of Keys To Abort
3060	PLP	Platonic Life Partner
3061	PLUTO	Pipe Line Under The Ocean
3062	PLW	Palau (ISO 3166 trigram)
3063	pm	picometre
3064	PMC	Primary Motor Cortex
3065	PMI	Positive Material Identification
3066	PMID	PubMed Identifier
3067	PMMA	PolyMethylMethAcrylate
3068	PMS	Premenstrual Syndrome
3069	PMSL	Piss Myself Laughing (Internet shorthand)
3070	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
3071	pN	piconewton
3072	PNAC	Project for the New American Century
3073	PNVS	Pilot Night Vision Sensor
3074	Po	Polonium
3075	PO	Post Office
3076	PO	Purchase Order
3077	POCD	Post-Operative Cognitive Dysfunction
3078	pod	Plain Old Documentation
3079	POFF	Plain Old Flat File
3080	POGO	Project On Government Oversight
3081	POI	Program Of Instruction
3082	POK	Plane Of Knowledge
3083	POLAD	Political Advice
3084	POMDP	Partially observable Markov decision process
3085	PooS	Poo Sniffer (Internet shorthand)
3086	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
3087	POSH	Port Outbound Starboard Home (alleged)
3088	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
3089	POT	Plane Of Tranquility
3090	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
3091	POTUS	President of the United States
3092	POV	Point of view
3093	POW	Prisoner of war
3094	PPASC	(U.S.) Plans and Program Analysis Support Center
3095	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
3096	PPLI	Precise Participant Location & Identification
3097	PPM	Project Planning and Management
3098	PPO	PolyPhenylene Oxide
3099	PPQN	Pulses Per Quarter Note (ditto)
3100	PPQT	Pre-Production Qualification Test
3101	PPV	Pay-per-view
3102	Pr	Pastor, Priest
3103	PR	Public Relations
3104	Prb	Presbyter
3105	PRBO	Point Reyes Bird Observatory
3106	PRC	People's Republic of China
3107	PRD	CERDEC Product Realization Directorate
3108	PRFG	Partial Fog (METAR Code)
3109	PRI	Puerto Rico (ISO 3166 trigram)
3110	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
3111	PRM	Personnel iness Management
3112	PRY	Paraguay (ISO 3166 trigram)
3113	Ps	petasecond
3114	pS	picosiemens
3115	PSG	Pacific Seabird Group
3116	PSI	Portable Source Initiative
3117	PSI	Pounds per square inch
3118	PSS	Personnel System Support
3119	PST	Pacific Standard Time (UTC-8 hours)
3120	PSU	Pennsylvania State University
3121	PsyOp	Psychological Operations
3122	pT	picotesla
3123	Pt	Platinum
3124	PTA	Parent-Teacher Association
3125	PTAL	Public Transport Accessibility Level
3126	PTES	People's Trust for Endangered Species
3127	PTFE	PolyTetraFluoroEthylene
3128	PTI	Pardon the Interruption
3129	PTSD	Post-Traumatic Stress Disorder
3130	Pu	Plutonium
3131	Pub	Publication
3132	PUG	PET Users Group
3133	PUN	Pull-Up Network
3134	PUP	Pull-Up Point
3135	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
3136	PV	petavolt
3137	pV	picovolt
3138	PvE	Player versus Environment
3139	PvP	Player versus Player
3140	PVR	Personal Video Recorder
3141	PvZ	Plants vs. Zombies
3142	PW	Palau (postal symbol; ISO 3166 digram)
3143	pW	picowatt
3144	PWA	Pirates With Attitude
3145	PWBA	Pension and Welfare Benefits Administration
3146	PWC	PieceWise Constant (describing a mathematical function)
3147	PwC	PricewaterhouseCoopers (international accounting firm)
3148	PWL	PieceWise Linear (describing a mathematical function)
3149	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
3150	PWR	Pressurized Water Reactor
3151	PX	Post eXchange
3152	PYF	French Polynesia (ISO 3166 trigram)
3153	PYMWYMI	Put Your Money Where Your Mouth Is
3154	Q1	First quarter of the year
3155	Q2	Second quarter of the year
3156	Q3	Third quarter of the year
3157	Q4	Fourth quarter of the year
3158	QA	Qatar (FIPS 10-4 country code; ISO 3166 digram)
3159	Qantas	Queensland And Northern Territory Aerial Services
3160	QAT	Qatar (ISO 3166 trigram)
3161	QB	Quarterback (football)
3162	QCD	Quantum ChromoDynamics
3163	QD	quaque die (Latin for 'daily')
3164	QDR	Quadrennial Defense Review
3165	QEH	Queen Elizabeth's Hospital
3166	QK	Air Canada Jazz (IATA airline designator)
3167	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
3168	QPS	Quark Publishing System
3169	QS	quantum sufficit (Latin, 'as much as suffices')
3170	QSCAT	Quick Scatterometer satellite
3171	QSL	Québec Sign Language
3172	QSO	Quasi-Stellar Object
3173	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3174	Quasar	Quasi-stellar radio source
3175	QUB	Queen's University Belfast
3176	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3177	qv	quod vide (Latin, 'which see')
3178	QZ	Awair (IATA airline designator)
3179	R2I	Resistance to Interrogation
3180	RA	Radio Australia
3181	Ra	Radium
3182	RAAF	Royal Australian Air Force
3183	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3184	RACK	Risk Aware Consensual Kink (SM phrase)
3185	Racon	RAdar beaCON
3186	RADA	Royal Academy of Dramatic Art
3187	Radar	Radio Detection And Ranging
3188	RadB	Rad51/Dmc1 homologous protein
3189	RADb	Routing Assets Data Base
3190	RADC	Region Air Defence Commander
3191	RAE	UK Royal Aircraft Establishment (-1991)
3192	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3193	RAM	Royal Air Maroc
3194	Ramark	RAdar MARKer
3195	RAOC	Rear Area Operation Centre
3196	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3197	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3198	RATELO	Radiotelephone Operator
3199	Rb	Rubidium
3200	RB	Running Back (football)
3201	RBI	Runs Batted In
3202	RC	see entry
3203	RCAF	Royal Canadian Air Force
3204	RCC	Rescue Co-ordination Centre
3205	RCCO	Royal Canadian College of Organists
3206	RCHA	Royal Canadian Horse Artillery (regiment)
3207	RCMP	Royal Canadian Mounted Police
3208	RD	Radio Disney
3209	RDD	Radiological Dispersion Device
3210	RDM	Remotely Delivered/Deliverable Mine
3211	RDT	Remote Digital Terminal
3212	RDV	Remote Detection Vehicle
3213	Re	Rhenium
3214	RE	Royal Engineers
3215	REACT	Remote Electronically Activated Control Technology
3216	REAM	Retired Educators Association of Minnesota
3217	RECCE	Reconnaissance
3218	REEF	Reef Environmental Education Foundation
3219	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3220	REME	Royal Electrical and Mechanical Engineers
3221	RERC	Rehabilitation Engineering Research Center
3222	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3223	REU	Réunion (ISO 3166 trigram)
3224	Rf	Rutherfordium
3225	RFD	Request for Documentation
3226	RFE	Request for Evaluation
3227	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3228	RFF	Right of First Refusal (legal term)
3229	RFID	Radio Frequency IDentification
3230	RFL	Rugby Football League
3231	RFP	Request for Proposal
3232	RFQ	Request for Quotation
3233	RFT	Request for Tender
3234	RFU	Rugby Football Union
3235	RG	Republican Guard
3236	Rg	Roentgenium
3237	RGB	Red Green Blue (colour model)
3238	RGBI	Red Green Blue Intensity (ditto)
3239	Rh	Rhodium
3240	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3241	RHIC	Relativistic Heavy Ion Collider
3242	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3243	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3244	RHU	Replacement Holding Unit
3245	RI	Rhode Island (postal symbol)
3246	RIAA	Recording Industry Association of America
3247	RIBA	Royal Institute of British Architects
3248	RIFA	Red imported fire ant
3249	RILA	Retail Industry Leaders Association
3250	RIMVS	Retinal Imaging Machine Vision System
3251	RINO	Republican In Name Only[1]
3252	RIP	Relief In Place,requiesca[n]t in pace (Latin for 'may he/she/they rest in peace')
3253	RISC	Reduced Instruction Set Computer
3254	RJD	Reduced Julian Day
3255	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3256	RKO	Radio-Keith-Orpheum Pictures
3257	RLP	Recognised [Operating/Operational] Land Picture
3258	RLS	Restless Leg Syndrome
3259	RLY	Rally Point
3260	RM	see separate disambiguation page
3261	RMC	Robert Menzies College
3262	RMDA	Records Management and Declassification Agency
3263	RMP	Recognised [Operating/Operational] Maritime Picture
3264	RN	Radio Netherlands
3265	Rn	Radon
3266	RNA	RiboNucleic Acid
3267	RNAD	Royal Naval Armaments Depot (UK)
3268	RNPS	Radio Network Planning System
3269	RNZ	Radio New Zealand
3270	RNZI	Radio New Zealand International
3271	ROA	Rate Of Ascent
3272	ROE	Rules Of Engagement
3273	ROFLOL	Rolling On the Floor Laughing Out Loud
3274	ROH	Ring of Honor
3275	ROK	Republic of Korea
3276	ROP	Render Output Pipeline
3277	ROPE	Research Opportunity and Performance Evidence
3278	ROS	Reactive Oxygen Species
3279	ROU	Romania (ISO 3166 trigram)
3280	ROV	Remotely Operated Vehicle
3281	ROZ	Restricted Operations Zone
3282	RPA	Regional Plan Association
3283	RPD	Recognition-Primed Decision-making
3284	RPF	Rwandan Patriotic Front
3285	RPL	Reverse Polish Lisp
3286	rpm	revolutions per minute
3287	RPN	reverse Polish notation
3288	rps	revolutions per second
3289	RPV	Remotely Piloted Vehicle
3290	RQ	Puerto Rico (FIPS 10-4 territory code)
3291	RRB	Railroad Retirement Board
3292	RRN	Recurrence Rate Number
3293	RRP	Recurrent Respiratory Papillomatosis
3294	RRS	Racing Rules of Sailing
3295	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3296	RS	Russia (FIPS 10-4 country code)
3297	RSI	Repetitive Strain Injury
3298	RSJ	Rolled Steel Joist (construction)
3299	RSN	Real Soon Now (coined by author Jerry Pournelle)
3300	RSPB	(UK) Royal Society for the Protection of Birds
3301	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3302	RSR	Required Supply Rate
3303	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3304	RSRI	Red Sands Research Institute
3305	RSS	Really Simple Syndication
3306	RTA	Road traffic accident (British)
3307	RTBF	Radio-Télévision belge de la Communauté française
3308	RTF	Rich Text Format
3309	RTFM	the Fucking/Fine Manual
3310	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3311	RTI	Run-Time Infrastructure (Simulation)
3312	RTL	see entry
3313	RTP	Real-time Transport Protocol
3314	RTS	see entry
3315	RTT	Round Trip Timing
3316	RU	Russia (ISO 3166 digram)
3317	Ru	Ruthenium
3318	RUC	Royal Ulster Constabulary
3319	RUS	Russia (ISO 3166 trigram)
3320	RUSI	Royal United Services Institute for Defence Studies
3321	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3322	RWA	Rwanda (ISO 3166 trigram)
3323	RWH	Rain Water Harvesting
3324	RWR	Radar Warning Receiver
3325	RWS	Remote Weapon Station
3326	Rx	Medical prescription (possibly from Latin 'recipere','to take': see entry)
3327	RX	Receive
3328	SARS	Severe Acute Respiratory Syndrome
3329	SBNO	Standing but not operating (in reference to amusement parks)
3330	SCOTUS	Supreme Court of the United States
3331	SCROTUS	So-called Ruler of the United States
3332	SDHC	Secure Digital High Capacity
3333	SDXC	Secure Digital eXtended Capacity
3334	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3335	SGOTUS	Second Gentleman of the United States
3336	SHO	Showtime (see also sho.com)
3337	SIRI	Service Interface for Real Time Information
3338	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3339	SLOTUS	Second Lady of the United States (the vice president's wife)
3340	SoCon	Southern Conference (U.S. college sports)
3341	SSC	Safe,Sane,Consensual (SM phrase),Secondary Somatosensory Cortex,Smaller-Scale Contingency,U.S. Army Soldiers System Center (Natick,Massachusetts),Superconducting Super Collider,SSCCATAGAPP — Singles,Seniors,Childless Couples,And Teens And Gays Against Parasitic Parents (fictional organization from The Simpsons)
3342	SSD	South Sudan (ISO 3166 trigram)
3343	SSDC	U.S. Space and Strategic Defense Command
3344	STB	Surface Transportation Board[2]
3345	SWAC	Southwestern Athletic Conference
3346	SWAN	System for Wearable Audio Navigation
3347	SWAT	Special Weapons And Tactics
3348	SWF	Single White Female
3349	Ta	Tantalum
3350	TAACOM	U.S. Theater Army Area Command
3351	TAADCOORD	Theatre Army Air Defence Co-ordinator
3352	TAAR	Trace Amine-Associated Receptor
3353	TAC	U.S. Tactical Air Command (1946-1992)
3354	TACAN	Tactical Air Navigation
3355	TACCO	Tactical Coordinator
3356	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3357	TACDAR	Tactical Detection And Reporting
3358	TACSOP	Tactical SOP (Standing Operating Procedure)
3359	TADIL	Tactical Digital Information Link
3360	TAI	Target[ed] Area of Interest
3361	TAJ	Tom and Jerry
3362	TAJT	Tom and Jerry Tales
3363	TALES	Technical Advice and Lexicon for Enabling Simulation
3364	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3365	TANP	Terrain-Aware Network Planner
3366	TANSTAAFL	There Ain't No Such Thing As A Free Lunch (coined by author Robert A. Heinlein in his The Moon Is a Harsh Mistress)
3367	TAPPS	Texas Association of Private and Parochial Schools
3368	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3369	TAS	Tasmania (postal symbol)
3370	TASER	Thomas A. Swift's Electric Rifle
3371	TASM	Tactical Air-to-Surface Missile
3372	TAT	Tourism Authority of Thailand
3373	TATP	TriAcetone TriPeroxide
3374	TATT	Tired All The Time (medical diagnosis in-joke)
3375	Tb	Terbium
3376	TB	Tuberculosis
3377	TBA	to be announced
3378	TBBPA	TetraBromoBisPhenol-A
3379	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3380	TBF	to be fair
3381	TBH	To Be Honest
3382	TBL	Turkish Basketball League
3383	TBS	Turner Broadcasting System
3384	TBT	Tributyltin
3385	Tc	Technetium
3386	TCAA	Top Counter-Assault Agents
3387	TCAS	Traffic Collision Avoidance System
3388	TCCCS	Tactical Command,Control and Communication System
3389	TCD	Chad (ISO 3166 trigram)
3390	TCHD	Truck Cargo Heavy Duty
3391	TCL	Tool Command Language
3392	TCM	Turner Classic Movies
3393	TCU	Texas Christian University
3394	TCW	Tasty Coma Wife
3395	TCWMS	Tele-Center Workforce Management System
3396	TDA	The Disney Afternoon
3397	TDL	Tactical Data Link
3398	TDM	Time-Division Multiplexing
3399	TDMA	Time Division Multiple Access
3400	TDP	Technology Demonstration Programme
3401	TDRS	Tracking Data and Relay Satellite
3402	Te	Tellurium
3403	TEAL	Tasman Empire Airways Limited
3404	Team	Together everyone achieves more
3405	TEAMS	The East African Marine System (fiber optic cable)
3406	TED	Technology Entertainment Design prize
3407	TENCAP	Tactical Exploitation of National Capabilities
3408	TERS	Tactical Event Reporting System
3409	TES	Tactical Event System
3410	TEST	Thesaurus of Engineering and Scientific Terms
3411	TEU	Twenty-foot equivalent unit (cargo capacity)
3412	TeVeS	Tensor Vector Scalar theory
3413	TFMPP	Trifluorophenylmethylpiperazine
3414	TFR	Total Fertility Rate
3415	TFT	Thin-Film Transistor
3416	Tg	Teragram
3417	TG	Togo (ISO 3166 digram)
3418	TGO	Togo (ISO 3166 trigram)
3419	Th	Thorium
3420	THA	Thailand (ISO 3166 trigram)
3421	THAAD	Terminal High Altitude Area Defence
3422	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3423	THEL	Tactical High Energy Laser ACTD
3424	THG	Tetrahydrogestrinone
3425	TIA	Total Information Awareness initiative
3426	TIA	Transient Ischemic Attack
3427	TIALD	Thermal Imaging and Airborne Laser Designation
3428	TIBS	Tactical Information Broadcast System
3429	TIC	Troops In Contact
3430	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3431	TINC	There Is No Cabal
3432	TIP	Thermal Identification Panel
3433	tits	Toes in the Sand
3434	TJD	Truncated Julian Day
3435	TJK	Tajikistan (ISO 3166 trigram)
3436	TKL	Tokelau (ISO 3166 trigram)
3437	TKM	Turkmenistan (ISO 3166 trigram)
3438	Tl	Thallium
3439	TLA	Three-Letter Abbreviation/Acronym
3440	TLAM	Tomahawk Land Attack Missile
3441	TLATOJL	The Life and Times of Juniper Lee
3442	TLPM	T1 Line Performance Monitor
3443	Tm	Terametre
3444	TMAP	Texas Medication Algorithm Project
3445	TMC	The Movie Channel
3446	TMD	Theatre Missile Defence
3447	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3448	TMI	Too Much Information
3449	TMJ	TemporoMandibular Joint (syndrome)
3450	TMNT	Teenage Mutant Ninja Turtles
3451	TMPG	Transparent Multi-Platform Gateway
3452	TMR	Twin Main Rotors (helicopter type)
3453	TMS	Transcranial Magnetic Stimulation
3454	TMT	Thirty Meter Telescope
3455	TMTOWTDI	There's Than One Way To Do It (from Perl)
3456	TNA	Total Nonstop Action Wrestling
3457	TNO	Trans-Neptunian Object
3458	TOBS	Time of OBServation
3459	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3460	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3461	TOGS	Thermal Observation Gunnery Sight
3462	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3463	TON	Tonga (ISO 3166 trigram)
3464	TOS	Tape Operating System,Terms of service,The Original Series,used to distinguish the first Star Trek TV series from other parts of the media franchise,Tramiel Operating System
3465	TOT	Time On Target
3466	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3467	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3468	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3469	TPI	The point is
3470	TPO	Thrombopoietin
3471	TPS	The Pennington School
3472	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3473	TQ	Top Qualifier (similar to Pole Position in car racing)
3474	TRA	Technology iness Assessment
3475	TRAC	(U.S. Army) TRADOC Analysis Center
3476	TRACON	Terminal Radar Approach Control
3477	TRADOC	(U.S. Army) Training and Doctrine Command
3478	TRANSCOM	U.S. Transportation Command
3479	TRAP	Tactical Receive equipment and related Applications
3480	TRASANA	TRADOC Systems Analysis Agency
3481	TRD	Towed Radar Decoy
3482	TRIGAT	Third Generation Antitank (missile)
3483	TRL	Technology readiness level
3484	Trp	Troop
3485	TRU	Transuranic
3486	TRUEX	Training in Urban Environment Exercise
3487	TRW	Thompson Ramo Wooldridge Inc.
3488	Ts	Terasecond
3489	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3490	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3491	TSEC	Transmission Security Encryption Code
3492	TSL	Transportation Security Laboratory
3493	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3494	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3495	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3496	TSR	Terminate and Stay Resident
3497	TSSIA	The Subject Says It All
3498	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3499	TTCT	Torrance Tests of Creative Thinking
3500	TTFN	Ta Ta For Now
3501	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3502	TTO	Trinidad and Tobago (ISO 3166 trigram)
3503	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3504	TTTEAF	Thomas the Tank Engine and Friends
3505	TTY	TeleTYpewriter (Printer)
3506	TTYL	To You Later (Internet slang)
3507	TTZ	Tetrazolium
3508	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3509	TUC	Trades Union Congress
3510	TUG	TeX Users Group
3511	TUI	Text-based user interface (cf. CLI),among other uses
3512	TUM	Technische Universität München (Germany)
3513	TUN	Tunisia (ISO 3166 trigram)
3514	TUNS	Technical University of Nova Scotia
3515	TUR	Turkey (ISO 3166 trigram)
3516	TUSK	Tank Urban Survival Kit
3517	TUV	Tuvalu (ISO 3166 trigram)
3518	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3519	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3520	TVA	Tennessee Valley Authority
3521	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3522	TVR	TreVor (Wilkinson) Racing
3523	TVS	Tornado vortex signature
3524	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3525	TWAIN	Technology Without An Interesting Name
3526	TWE	Trans World Entertainment
3527	TWI	The Welding Institute
3528	TWIP	Take What Insurance Pays,When a surgeon agrees to accept a lower payment than he ordinarily would for a procedure and not charge the patient the difference
3529	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3530	TWP	Technical Working Paper
3531	TWS	Thermal Weapon Sight,Track While Scan
3532	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3533	TXV	Thermostatic Expansion Valve
3534	TYT	Take Your Time,Internet chat abbreviation
3535	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3536	TZA	Tanzania (ISO 3166 trigram)
3537	TZC	Tetrazolium chloride
3538	U	Uranium
3539	UA	Unit of Action
3540	UAAP	University Athletic Association of the Philippines
3541	UAB	University of Alabama at Birmingham
3542	UAP	Unidentified Areal Phenomana
3543	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3544	UBC	United Baptist Church,University of British Columbia
3545	UBI	Universal Basic Income
3546	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3547	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3548	UCBSA	United Cricket Board of South Africa
3549	UCF	University of Central Florida
3550	UCLA	University of California at Los Angeles
3551	UCLES	University of Cambridge Local Examinations Syndicate
3552	UCR	University of California at Riverside
3553	UCR	University of Costa Rica
3554	UCS	Union of Concerned Scientists
3555	UCSB	University of California at Santa Barbara
3556	UCSD	University of California at San Diego
3557	UDAS	Uppsala-DLR Asteroid Survey
3558	UDDI	Universal Description,Discovery and Integration
3559	UDTS	Uppsala-DLR Trojan Survey
3560	UE	Unit of Employment
3561	UEFA	Union of European Football Associations
3562	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3563	UFC	Ultimate Fighting Championship
3564	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3565	UGV	Unmanned Ground Vehicle
3566	UHF	Ultra High Frequency
3567	UHMW	Ultra-High Molecular Weight
3568	UHRB	Ultra-High Resolution Building (simulation)
3569	UIC	University of Illinois at Chicago
3570	UID	User ID
3571	UIUC	University of Illinois at Urbana-Champaign
3572	UJTL	Universal Joint Task List
3573	UKIP	United Kingdom Independence Party
3574	UKR	Ukraine (ISO 3166 trigram)
3575	UL	Underwriters Laboratories
3576	ULF	Ultra Low Frequency
3577	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3578	UMCP	Unit Maintenance Collection Point
3579	UMES	University of Maryland Eastern Shore
3580	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3581	UMIST	University of Manchester Institute of Science and Technology
3582	UMTS	Universal Mobile Telecommunications System
3583	UN	United Nations
3584	UNABOM	University and airline bomber (FBI case name)
3585	UNAIDS	Joint United Nations Programme on HIV/AIDS
3586	UNAMSIL	United Nations Mission in Sierra Leone
3587	UNCF	United Negro College Fund
3588	UNCLOS	United Nations Convention on the Law of the Sea
3589	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3590	UNCTAD	United Nations Conference on Trade and Development
3591	UNDCP	United Nations Drug Control Programme
3592	UNDE	Union of National Defence Employees (Canada)
3593	UNDP	United Nations Development Programme
3594	UNEP	United Nations Environment Programme
3595	UNFCCC	United Nations Framework Convention on Climate Change
3596	UNFICYP	United Nations Peacekeeping Force in Cyprus
3597	UNGEGN	United Nations Group of Experts on Geographical Names
3598	UNHCR	United Nations High Commission (er) for Refugees
3599	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3600	UNICRI	United Nations Interregional Crime and Justice Research Institute
3601	UNIDO	United Nations Industrial Development Organization
3602	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3603	UNLV	University of Nevada,Las Vegas
3604	UNMIK	United Nations Interim Administration Mission in Kosovo
3605	UNOSOM	United Nations Operations in Somalia
3606	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3607	UNRISD	United Nations Research Institute for Social Development
3608	UNSM	Union of Nova Scotian Municipalities
3609	UNTAC	United Nations Transitional Authority in Cambodia
3610	UNTAET	United Nations Transitional Administration in East Timor
3611	UNU	United Nations University
3612	UPdM	Università Popolare della Multimedialità
3613	UPF	Universitat Pompeu Fabra (Catalan for: 'Pompeu Fabra University')
3614	UPI	United Press International
3615	UPN	United Paramount Network
3616	UPU	Universal Postal Union
3617	UR	Soviet Union (NATO country code,obsolete 1992)
3618	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3619	URD	User Requirements Document
3620	URI	University of Rhode Island
3621	URU	Uruguay (IOC and FIFA trigram, but not ISO 3166)
3622	URY	Uruguay (ISO 3166 trigram)
3623	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3624	USA	United States of America (also ISO 3166 trigram), United States Army
3625	USAADAC	U.S. Army Air Defense Artillery Center,Fort Bliss,Texas
3626	USAARMC	U.S. Army ARMor Center,Fort Knox,Kentucky
3627	USAAVNC	U.S. Army AViatioN Center,Fort Rucker,Alabama
3628	USAFSPC	U.S. Air Force Space Command
3629	USAIC	U.S. Army Infantry Center,U.S. Army Intelligence Center
3630	USAID	United States Agency for International Development
3631	USAP	Union Sportive des Arlequins Perpignanais,United States Antarctic Program
3632	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3633	USAREUR	United States Army Europe
3634	USB	Universal Serial Bus
3635	USC	United States Code,University of South Carolina,University of Southern California
3636	USCG	United States Coast Guard
3637	USCINCSPACE	United States Commander in Chief,Space Command
3638	USDA	United States Department of Agriculture
3639	USDI	United States Department of the Interior
3640	USDOE	United States Department of Energy
3641	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3642	USEC	United States Enrichment Corporation
3643	USFL	United States Football League
3644	USFWS	United States Fish and Wildlife Service
3645	USGS	United States Geological Survey
3646	USIA	United States Information Agency
3647	USJFCOM	United States Joint Forces Command
3648	USL	United Soccer League,a third-level U.S. league. Not to be confused with an earlier league of the same name.,United Soccer Leagues,the organization that operates the above league,plus several other lower-level leagues,University of Southwestern Louisiana,a former name for the school now known as the University of Louisiana at Lafayette
3649	USMC	United States Marine Corps
3650	USMNT	United States men's national (soccer) team
3651	USN	United States Navy
3652	USNA	United States National Arboretum,United States Naval Academy
3653	USNB	United States Naval Base
3654	USNG	United States National Grid
3655	USNH	United States Naval Hospital
3656	USNI	United States Naval Institute
3657	USNO	U.S. Naval Observatory
3658	USNOFS	United States Naval Observatory Flagstaff Station
3659	USNP	United States Newspaper Program
3660	USNR	United States Navy Reserve
3661	USNS	United States Naval Ship
3662	USNY	University of the State of New York (usually pronounced 'use-knee')
3663	USNZ	University Sport New Zealand
3664	USPS	United States Postal Service
3665	USPTO	United States Patent and Trademark Office
3666	USR	User
3667	USS	United States ship (sometimes meaningless; see Star Trek)
3668	USSPACECOM	United States Space Command
3669	USSR	Union of Soviet Socialist Republics
3670	UST	Underground Storage Tank
3671	USTRANSCOM	United States Transportation Command
3672	USWNT	United States women's national (soccer) team
3673	UT	Universal Time
3674	UTEP	University of Texas at El Paso (pronounced you-tep)
3675	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3676	UUA	Unitarian Universalist Association
3677	UUID	Universally Unique Identifier (see also GUID)
3678	UUV	Unmanned Underwater Vehicle
3679	UW	University of Washington
3680	UWO	University of Western Ontario
3681	UWT	Under Water Telephone
3682	UWTG	Under Water Tug
3683	UWW	United World Wrestling
3684	UXO	Unexploded Ordnance
3685	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3686	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3687	UZB	Uzbekistan (ISO 3166 trigram)
3688	VACIS	Vehicle And Container Inspection System
3689	VACIS	Victorian Ambulance Clinical Information System
3690	VANOS	Variable Nockenwelle System
3691	VAO	Vienna Art Orchestra
3692	VAT	Vatican City-State (ISO 3166 trigram)
3693	VBA	Visual Basic for Applications
3694	vCJD	Variant Creutzfeldt-Jakob Disease
3695	VCNO	(U.S.) Vice Chief of Naval Operations
3696	VCofS	Vice Chief of Staff
3697	VCR	Video cassette recorder
3698	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3699	VDFS	VisualSVN Distributed File System (VDFS)
3700	VE	Venezuela (FIPS 10-4 country code; ISO 3166 digram)
3701	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3702	VEN	Venezuela (ISO 3166 trigram)
3703	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3704	VfD	s for deletion (used in Wikipedia)
3705	VFM	Value For Money
3706	VFMO	Very Fast Moving Object (astronomy)
3707	VFT	Virtual Function Table
3708	VFW	Veterans of Foreign Wars
3709	VG	British Virgin Islands (ISO 3166 digram)
3710	VGB	British Virgin Islands (ISO 3166 trigram)
3711	VH1	Video Hits One
3712	VHF	Very High Frequency
3713	VIA	Versatile Interface Adapter
3714	VIDS	Visual Information Display System
3715	VII	7 (in Roman numerals)
3716	VIII	8 (in Roman numerals)
3717	VIN	Vehicle Identification Number (ISO 3779)
3718	VIP	Very Important Person
3719	VISCII	VIetnamese Standard Code for Information Interchange
3720	VIT	Vellore Institute of Technology
3721	VIVO	Video In Video Out
3722	VJ	Video Jockey
3723	VLAD	Vertical Line Array DIFAR
3724	VLBA	Very Long Baseline Array
3725	VLF	Very Low Frequency
3726	VLIW	Very Long Instruction Word
3727	VLPFC	VentroLateral PreFrontal Cortex
3728	VLPMC	VentroLateral PreMotor Cortex
3729	VLSI	Very-large-scale integration
3730	VM	Vietnam (FIPS 10-4 country code)
3731	VMF	Marine Fighting Squadron of the United States Marine Corps
3732	VMF	Variable Message Format
3733	VMN	VentroMedial Nucleus (neurophysiology)
3734	VN	Vietnam (ISO 3166 digram)
3735	VNIR	Visible and Near InfraRed
3736	VNM	Vietnam (ISO 3166 trigram)
3737	VNS	see entry
3738	VOA	Voice of America
3739	VOIP	Voice Over Internet Protocol
3740	VOLT	Visual OpenType Layout Tool
3741	VON	Victorian Order of Nurses
3742	VOR	Voice of Russia
3743	VOX	Voice Operated oscillator
3744	VPOTUS	Vice President of the United States
3745	VPN	Virtual Private Network
3746	VR	Virtual Reality
3747	VRSG	Virtual Reality Scene Generator
3748	VSHORAD	Very Short Range Air Defence
3749	VSO	Voluntary Services Overseas
3750	VSR	Very Special Relativity
3751	VTC	Video Tele-Conference
3752	VTEC	Variable valve Timing and Electronic lift Control
3753	VUB	Vrije Universiteit Brussel (Belgian university)
3754	VUT	Vanuatu (ISO 3166 trigram)
3755	VVAF	Vietnam Veterans of America Foundation
3756	VW	Volkswagen
3757	VZ	Verizon Communications (NYSE code)
3758	W3C	World Wide Web Consortium
3759	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3760	WAAF	Women's Auxiliary Air Force (World War II UK)
3761	WACC	Weighted Average Cost of Capital (accounting)
3762	WACS	What-A-Cartoon! Show
3763	WAD	Weapons Alert Designator
3764	WAGGGS	World Association of Girl Guides and Girl Scouts
3765	WAL	see entry
3766	WAN	Wide area network
3767	WAP	Wireless Application Protocol
3768	WAPIMA	What a pain in my ass
3769	WAR	With All Respect
3770	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3771	WAYP	White And Yellow Pages
3772	Wb	Weber
3773	WBC	World Boxing Council
3774	WBE	Work Breakdown Element
3775	WBO	World Boxing Organization
3776	WCBO	World Chess Boxing Organisation
3777	WCBP	World Center for Birds of Prey
3778	WCL	World Confederation of Labour
3779	WCW	World Championship Wrestling
3780	WDIN	Wildlife Disease Information Node
3781	WDWR	Walt Disney World Resort
3782	WEBS	Weapon Effectiveness Battle Simulation
3783	WEC	World Extreme Cagefighting
3784	WEEE	Waste Electrical and Electronic Equipment
3785	WEF	World Economic Forum
3786	WEM	West Edmonton Mall
3787	WEU	Western European Union
3788	WEZ	Weapon Engagement Zone
3789	WF	Wallis and Futuna Islands (ISO 3166 digram)
3790	WFC	Women's Forage Corps (World War II UK)
3791	WFD	Weapon of Focused Destruction
3792	WFF	Wallops Flight Facility
3793	WFI	Water for Injection
3794	WFH	Working from home
3795	WFP	World Food Program
3796	WFZ	Weapons Free Zone
3797	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3798	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3799	WHI	Women's Health Initiative
3800	WHIP	Walks plus hits per inning pitched
3801	WHO	World Health Organisation
3802	WHS	(U.S.) Washington Headquarters Services
3803	WIIFM	What's in it for me?
3804	WIP	Work In Progress
3805	WIPO	World Intellectual Property Organization
3806	WIPP	[Nuclear] Waste Isolation Pilot Plant
3807	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3808	WKYP	Will Keep You Posted
3809	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3810	WLB	Women's Land Brigade (World War II Canada)
3811	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3812	WLOG	Without Loss Of Generality (see WOLOG)
3813	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3814	WMANUS	West Midlands Area National Union of Students
3815	WMD	World Movement for Democracy
3816	WMI	Wildlife Management Institute
3817	WMO	World Meteorological Organization
3818	WNA	World Nuclear Association
3819	WNF	Will Not Fix
3820	WNIT	Women's National Invitation Tournament
3821	WNW	West North-West
3822	WO	Warrant Officer
3823	WOF	Width of Fabric
3824	WOFT	Waste Of Fucking Time
3825	WOFTAM	Waste Of Fucking Time And Money
3826	WOI	Wheels Of Italy
3827	WOM	Write Only Memory
3828	WOS	Wilson Ornithological Society
3829	WOT	Waste Of Time
3830	WP	White Phosphorus (ammunition)
3831	WPB	War Production Board during World War II
3832	WPE	World Pork Expo
3833	WPK	Wider Peacekeeping
3834	WR	Wide Receiver (football)
3835	WRAC	Women's Royal Army Corps (World War II UK)
3836	WRAIR	Walter Reed Army Institute of Research
3837	WRBWWRM	We Best What We Most
3838	WRC	World Rally Championship
3839	WRC	World Religions Conference
3840	WRNG	Warning
3841	WRS	Worldwide Reference System
3842	WRT	NHS Workforce Review Team
3843	WRT	The Linksys routers whose model name start with 'WRT'
3844	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3845	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3846	WRT	Wireless Receiver/Transmitter ( computer networks/IT )
3847	WRT	Wireless Ronin Technologies (digital signage)
3848	WRT	World Rally Team
3849	WRT	Writer Response Theory
3850	WSC	Weapon System Catalogue
3851	WSDL	Web Services Description Language
3852	WSJ	(The) Wall Street Journal
3853	WSROC	Western Sydney Regional Organisation of Councils
3854	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3855	WSTC	Women Signallers Territorial Corps (World War II UK)
3856	WSW	West South-West
3857	WTC	World Trade Center
3858	WTF	What the fuck?; also What a Terrible Failure (android)
3859	WTFH	What The Fucking Hell
3860	WTH	What the Hell
3861	WTO	World Trade Organization
3862	WUBU2	What you been up to
3863	WV	West Virginia (postal symbol)
3864	WVA	World Veterinary Association
3865	WVIAC	West Virginia Intercollegiate Athletic Conference
3866	WVR	Women's Volunteer Reserve (World War II UK)
3867	WVSC	Women's Volunteer Service Corps (World War II Canada)
3868	WVU	West Virginia University
3869	WW	see entry
3870	WWE	World Wrestling Entertainment
3871	WWI	World War I
3872	WWII	World War II
3873	WWIII	World War III
3874	WWJD	What would Jesus do?
3875	WWS	Wheaton Warrenville South High School
3876	WWWF	World Wide Wrestling Federation
3877	WXO	Weather [Executive] Officer
3878	WY	Wyoming (postal symbol)
3879	WZ	Swaziland (FIPS 10-4 country code)
3880	XBML	eXtended Business Modelling Language
3881	XC	Ninety (in Roman numerals)
3882	XCBL	XML Common Business Library
3883	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3884	Xe	Xenon
3885	XFA	XML Forms Architecture
3886	XFC	Xtreme Fighting Championships
3887	XFD	Fighter aircraft made by Douglas
3888	Xfe	X File Explorer
3889	XFF	X-Forwarded-For
3890	XFG	Exfoliation glaucoma
3891	XFR	Automobile made by Jaguar
3892	XFT	X FreeType interface library
3893	XG	Automobile made by Hyundai
3894	XGA	Extended Graphics Array
3895	XGP	Extreme Game Player
3896	XHTML	eXtensible Hypertext Markup Language
3897	XI	Eleven (in Roman numerals)
3898	XII	Twelve (in Roman numerals)
3899	XIII	Thirteen (in Roman numerals)
3900	XIV	Fourteen (in Roman numerals)
3901	XIX	Nineteen (in Roman numerals)
3902	XJS	Automobile made by Jaguar
3903	XKB	X keyboard extension
3904	XKE	Automobile made by Jaguar
3905	XKR	Automobile made by Jaguar
3906	XML	eXtensible Markup Language
3907	XMSF	eXtensible Modelling and Simulation Framework
3908	XNA	X-No-Archive,Xeno Nucleic Acid
3909	XNC	X Northern Captain
3910	XNU	X is Not Unix
3911	XP	eXperience Point (role-playing games)
3912	XQJ	XQuery API for Java™
3913	XRAY	X-Ray
3914	XRML	eXtensible Rights Markup Language
3915	XS	Xiaolin Showdown
3916	XSL	eXtensible Style Language
3917	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3918	XUL	XML User Interface Language
3919	XV	Fifteen (in Roman numerals)
3920	XVI	Sixteen (in Roman numerals)
3921	XVII	Seventeen (in Roman numerals)
3922	XVIII	Eighteen (in Roman numerals)
3923	XWF	Xcitement Wrestling Federation
3924	XX	Twenty (in Roman numerals)
3925	Xyl	Xylobium
3926	XZN	Triple square screw driver
3927	y	Yocto-
3928	Y2K	Year Two Thousand
3929	yA	Yoctoampere
3930	Ya	Yottayear
3931	YaBPr	Yet another Brother Pat rant
3932	YABSLAG	Yet another boy singing like a girl
3933	YAC	Youth-Adult Committee
3934	YAFLA	Yet Another Five Letter Abbreviation
3935	YAP	Young Aspiring Professional
3936	YB	Youcef Benzouada (Southern Algerian name)
3937	Yb	Ytterbium
3938	yC	Yoctocoulomb
3939	YC	Yottacoulomb
3940	YDS	Yosemite Decimal System (climbing)
3941	YE	Yemen (ISO 3166 digram)
3942	YEM	Yemen (ISO 3166 trigram)
3943	yF	Yoctofarad
3944	YF	Yottafarad
3945	yg	Yoctogram
3946	Yg	Yottagram
3947	YGCO	Yamaneko Group of Comet Observers
3948	Ygo	Yu-Gi-Oh!
3949	yH	Yoctohenry
3950	YH	Yottahenry
3951	YHBT	You Have Been Trolled
3952	YHII	You Have It Inside
3953	YHS	Ya Hoor sur!
3954	Yi	Yobi
3955	Yippie	Youth International Party + suffix
3956	yJ	Yoctojoule
3957	YJ	Yottajoule
3958	yK	Yoctokelvin
3959	YK	Yottakelvin
3960	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
3961	yL	Yoctolitre
3962	YL	Yottalitre
3963	ym	Yoctometre
3964	Ym	Yottametre
3965	YMMD	You Make My Day
3966	yN	Yoctonewton
3967	YN	Yottanewton
3968	YOLO	You Only Live Once
3969	YPA	Yards per Pass Attempt (football statistic)
3970	YPIO	Your Problem Is Obvious
3971	YPO	Young Presidents' Organization
3972	ys	Yoctosecond
3973	yS	Yoctosiemens
3974	Ys	Yottasecond
3975	YS	Yottasiemens
3976	YSI	Young Scots for Independence
3977	yT	Yoctotesla
3978	YTD	Year-To-Date
3979	YTM	Yield to Maturity
3980	YTS	Youth Training Scheme
3981	YTT	Yoshi Topsy-Turvy
3982	Yuppie	Young Urban Professional + suffix
3983	yV	Yoctovolt
3984	YV	Yottavolt
3985	yW	Yoctowatt
3986	YW	Yottawatt
3987	YYH	YuYu Hakusho
3988	z	Zepto
3989	Z	Zetta
3990	zA	Zeptoampere
3991	ZAF	South Africa (ISO 3166 trigram)
3992	ZAMS	Zero age main sequence
3993	ZAS	Zylinder Abschaltung System
3994	ZBT	Zero-Balance Transfer (accounting)
3995	zC	Zeptocoulomb
3996	ZC	Zettacoulomb
3997	ZCM	(n) ZENworks Configuration Management
3998	ZCMK	Zone Control Master Key
3999	ZCU	Zimbabwe Cricket Union
4000	\a	Atto-