PowerShell/data/dicts/general.csv

1	TERM	MEANING
2	e.g.	'exempli gratia' in Latin, meaning: 'for example'
3	0D	obvious deed
4	1AM	Air Mechanic 1st Class
5	1D	One-Dimensional
6	2AM	Air Mechanic 2nd Class
7	2D	Two-dimensional
8	2LA	Two Letter Acronym
9	2Lt	2nd Lieutenant
10	3AM	Air Mechanic 3rd Class
11	3D	Three-Dimensional
12	3G	Third-generation mobile telephone system
13	3i	Investors In Industry (venture capitalists)
14	3M	Minnesota Mining and Manufacturing Company
15	4G	Fourth-generation mobile telephone system
16	4WD	Four-wheel drive
17	5D	Five-Dimensional
18	6D	Six-Dimensional
19	7D	Seven-Dimensional
20	8D	Eight-Dimensional
21	9D	Nine-Dimensional
22	A	Ampere
23	A/C	Air Conditioned/Conditioning
24	A10	Atlantic 10 Conference
25	A1C	Airman First Class
26	A4	European standard office paper size
27	aA	Attoampere
28	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)
29	AAAS	American Association for the Advancement of Science
30	AAAV	Advanced Amphibious Assault Vehicle
31	AADAC	Alberta Alcohol and Drug Abuse Commission
32	AADD	Adult attention deficit disorder
33	AADT	annual average daily traffic
34	AAFES	Army and Air Force Exchange Service
35	AAIS	advanced airborne interceptor simulator
36	AAM	air-to-air missile
37	AAMOF	as a matter of fact
38	AAN	American Academy of Nursing
39	AANEAS	Anglo-Australian Near-Earth Asteroid Survey
40	AAODL	Atmospheric Aerosols and Optics Data Library
41	AAPC	Accounting and Auditing Policy Committee
42	AARP	American Association of Retired Persons (now officially known only by the initials)
43	AASPEM	advanced air-to-air system performance evaluation model
44	AAT	Australian Antarctic Territory
45	AAV	Amphibious Assault Vehicle
46	AAWC	anti-air warfare commander
47	AB	Able Seaman (both the rank and the occupation),Alberta (postal symbol)
48	ABB	ASEA Brown Boveri (Swiss-Swedish multinational company)
49	ABBA	Agnetha,Benny,Björn,Anni-Frid (Swedish pop group)
50	ABC	the first three letters of the Latin script known as the alphabet
51	ABC	abstinence, be faithful, condoms
52	ABC	Active Body Control
53	ABC	airway, breathing, circulation
54	ABC	Alcoholic Beverage Commission
55	ABC	alien big cat
56	ABC	always be careful
57	ABC	American-born Chinese
58	ABC	anti-lock brake controller
59	ABC	atomic, biological, chemical
60	ABCS	(U.S.) Army Battle Command System
61	ABET	Accreditation Board for Engineering and Technology
62	ABFIST	Advanced Bradley Full Crew Interactive Skills Trainer
63	ABGI	Addington-Barker Group International
64	ABIN	Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
65	ABL	American Basketball League
66	ABLE	AirBorne Law Enforcement (police air support unit)
67	ABMC	American Battle Monuments Commission
68	ABN	Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
69	ABPI	Association of the British Pharmaceutical Industry
70	ABRSM	Associated Board of the Royal Schools of Music
71	ABS	anti-lock braking system
72	ABSA	Amalgamated Banks of South Africa
73	ABSTRIPS	abstraction-based STRIPS
74	ABV	Alcohol by volume
75	ABW	Aruba (ISO 3166 trigram)
76	Ac	Actinium
77	AC	Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin,'before Christ'; see BC),ante cibum (Latin,'before meals'),Associazione Calcio (Italian,'football (soccer) club')
78	aC	Attocoulomb
79	AC1	Aircraftman 1st Class
80	AC2	Aircraftman 2nd Class
81	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
82	ACAB	All cops are bastards
83	ACARS	Aircraft Communications Addressing and Reporting System
84	ACB	Asociación de Clubes de Baloncesto (Spanish for 'Association of Basketball Clubs')
85	ACCAC	Awdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
86	ACCD	American Coalition of Citizens with Disabilities
87	ACCS	Air Communications and Control Squadron
88	ACDA	Arms Control & Disarmament Agency
89	ACDC	Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
90	ACDT	Apple Certified Desktop Technician,Australian Central Daylight Time
91	ACES	Aerolíneas Centrales de Colombia (Spanish,'Central Colombian Airlines'),Auxiliary Campus Enterprises and Services of Alfred State College
92	ACF	Administration for Children and Families,American Car and Foundry,American Culinary Federation
93	ACHT	Average Call Hold Time
94	ACINT	Acoustic Intelligence
95	ACK	Acknowledge (telecommunications; cf. NAK)
96	ACL	Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
97	ACLJ	American Center for Law and Justice
98	ACLOS	Automatic CLOS (missile control system)
99	ACLS	American Council of Learned Societies
100	ACLU	American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
101	ACM	many,including Association for Computing Machinery; see entry
102	ACMC	(U.S.) Assistant Commandant of the Marine Corps
103	ACN	Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
104	ACNA	Anglican Church in North America
105	ACO	Airspace Control Order
106	ACOBA	Advisory Committee on Business Appointments
107	ACOG	American College of Obstetricians and Gynecologists
108	ACOM	(U.S.) Atlantic Command
109	ACORN	Association of Community Organizations for Reform Now
110	ACP	African,Caribbean and Pacific Group of States,Air Control Point
111	ACR	Advanced Concepts and Requirements
112	ACRI	African Crisis Initiative
113	ACRT	Advanced Concepts Research Tool simulator
114	ACS	Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
115	ACSC	Army Command and Staff College (various nations)
116	ACST	American Cooperative School of Tunis
117	ACST	Australian Central Standard Time
118	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
119	ACTD	Advanced Concept Technology Demonstration
120	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)
121	ACTU	Australian Council of Trade Unions
122	ACU	American Conservative Union
123	ACUF	Advisory Committee on Undersea Features,American Conservative Union Foundation
124	AD	Anno Domini (Latin for 'In the year of our Lord')
125	ADA	Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
126	ADAC	Allgemeiner Deutscher Automobil-Club (German for 'General German Automobile Club')
127	ADAGE	Air Defense Air to Ground Engagement (simulation)
128	ADAP	AIDS Drug Assistance Program
129	ADAS	Asiago-DLR Asteroid Survey
130	ADAT	Alesis Digital Audio Tape (recording format)
131	ADATS	Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
132	ADB	Asian Development Bank
133	ADC	Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
134	ADD	Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
135	ADDIE	Analyze Design Develop Implement and Evaluate
136	ADDNS	Advanced Deployable Day/Night Simulation
137	ADGB	Air Defence of Great Britain
138	ADHD	Attention-Deficit Hyperactivity Disorder
139	ADHS	Attention-Deficit Hyperactivity Syndrome
140	ADI	Acceptable/Allowable Daily Intake
141	ADL	Anti-Defamation League
142	ADM	Administrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
143	ADOA	Air Defence Operations Area
144	ADP	Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
145	ADRG	Arc-second Raster Chart (ARC) Digitized Raster Graphics
146	ADS	Active Denial System, Astrophysics Data System, Attention Deficit Syndrome
147	ADSR	Attack,Decay,Sustain,Release (sound envelope specification)
148	ADT	Atlantic Daylight Time (UTC−3 hours)
149	ADTB	Army Doctrine and Training Bulletin
150	ADW	Air Defence Warning
151	AE	Armed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram),Artix Entertainment,American Eagle,A&E, Arts & Entertainment Network,the original name for the U.S. TV channel now known as A&E Network
152	AEDT	Australian Eastern Daylight Time
153	AEF	American Expeditionary Force
154	AEGIS	Airborne Early warning Ground environment Interface Segment (fake etymology)
155	AESR	Aeronautical Equipment Service Record
156	AEST	Australian Eastern Standard Time
157	aet	After extra time (Football)
158	AEW	Airborne Early Warning,Airborne Electronic Warfare
159	AF	Afghanistan (ISO 3166 digram),Air Force,As f*ck
160	aF	Attofarad
161	AFA	U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
162	AFAIC	As Far As I'm Concerned
163	AFAICT	As Far As I Can Tell
164	AFAIK	As Far As I Know
165	AFAIR	As Far As I Remember/Recall
166	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
167	AFATDS	Advanced Field Artillery Tactical Data System
168	AFCEA	Armed Forces Communications and Electronics Association
169	AFDB	African Development Bank
170	AFES	Automatic Fire Extinguishing System
171	AFG	Afghanistan (ISO 3166 trigram)
172	AFI	French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977),'Agencia Federal de Investigaciónes' (México)
173	AFIST	Abrams Full Crew Interactive Skills Trainer
174	AFJ	April Fool's Joke
175	AFK	Away From Keyboard (Internet chat abbreviation)
176	AFLAC	American Family Life Assurance Company of Columbus
177	AFO	Association of Field Ornithologists
178	AFOSR	U.S. Air Force Office of Scientific Research
179	AFP	Agence France-Presse (French,'French Press Agency'), Australian Federal Police
180	AFQT	Armed Forces Qualification Test
181	AFRC	Air Force Reserve Command
182	AFRL	Air Force Research Laboratory
183	AFROTC	Air Force Reserve Officer Training Corps
184	AFRRI	(U.S.) Armed Forces Radiobiology Research Institute
185	AFRTS	Armed Forces Radio and Television Service
186	AFSC	U.S. Air Force Staff College (obsolete; replaced with JFSC), U.S. Air Force Systems Command
187	AFSCN	U.S. Air Force Satellite Control Network
188	AFSPC	Air Force Space Command
189	AFT	American Farmland Trust
190	AFV	armoured fighting vehicle
191	AG	air gunner,Aktiengesellschaft (German,'incorporated'),Antigua and Barbuda (ISO 3166 digram),Assemblies of God
192	ag	Attogram
193	Ag	Silver (Latin for 'argentum')
194	AGA	AB Gas-accumulator ('ah-gah',Swedish company),Advanced Graphics Architecture
195	AGARD	Advisory Group for Aerospace Research and Development
196	AGARDograph	Advanced Guidance for Alliance Research and Development publication
197	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
198	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
199	AGC	Adjutant General's Corps (British Army)
200	AGDC	Australian Game Developers' Conference
201	AGI	Auxiliary Group Intelligence
202	AGM	Annual General Meeting
203	AGN	Active Galactic Nucleus
204	AGO	Angola (ISO 3166 trigram)
205	AGP	Accelerated Graphics Port
206	AGRICOLA	Agriculture Online Access
207	AGS	Alaska Ground Station (LandSat)
208	AGTS	Advanced Gunnery Training System
209	AGU	American Geophysical Union
210	AGW	Autonomous Guided Weapon
211	Ah	Ampere-hour
212	AH	Attack Helicopter
213	aH	Attohenry
214	AHA	American Heart Association
215	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
216	AHEC	Australian Health Ethics Committee
217	AHPCRC	Army High Performance Computing Research Center
218	AHQ	Air Headquarters
219	AHRQ	Agency for Healthcare Research and Quality
220	AHS	American Housing Survey
221	AI	Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence,Anguilla (ISO 3166 digram)
222	AIA	Aerospace Industries Association,American Institute of Architects,Anguilla (ISO 3166 trigram)
223	AIAA	American Institute of Aeronautics and Astronautics
224	AIC	African Independent Church,Animal Identification Coordinator
225	AICD	Australian Institute of Company Directors
226	AICMFP	And I Claim My Five Pounds
227	AID	U.S. Agency for International Development
228	AIDS	Acquired Immune Deficiency Syndrome
229	AIM	Australian Institute of Management
230	AIMP	Aurora Incremental Modernization Project
231	AIPAC	American Israel Public Affairs Committee
232	AIR	Aircraft Inventory Record
233	AIRFA	American Indian Religious Freedom Act
234	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
235	AIS	Australian Institute of Sport,Automatic Identification System
236	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
237	aJ	Attojoule
238	Ajax	Asynchronous JavaScript And XML
239	AJD	Astronomical Julian day
240	AJP	Allied Joint Publication
241	AJPW	All Japan Pro Wrestling
242	AK	Alaska (postal symbol)
243	aK	Attokelvin
244	AKA	Above knee amputation (orthopaedic usage)
245	AKDT	Alaska Standard Daylight Saving Time (UTC−8 hours)
246	AKP	Adalet ve Kalkınma Partisi (Turkish,'Justice and Development Party')
247	AKST	Alaska Standard Time (UTC−9 hours)
248	AL	Alabama (postal symbol),Albania (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)
249	Al	Aluminium
250	aL	Attolitre
251	ALA	Åland Islands (ISO 3166 trigram)
252	ALAP	As Long/Late As Possible
253	ALARM	Air-Launched Anti-Radar Missile
254	ALB	Albania (ISO 3166 trigram)
255	ALD	Accounting Line Designator (nuclear weapon targeting)
256	ALERT	Advanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
257	ALF	Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
258	ALG	Algeria (IOC and FIFA trigram,but not ISO 3166)
259	ALGOL	ALGOrithmic Language
260	ALPA	Air Line Pilots Association
261	ALS	Amyotrophic Lateral Sclerosis
262	ALSHS	Abraham Low Self-Help Systems
263	ALSP	Aggregate Level Simulation Protocol
264	ALTE	Association of Language Testers in Europe
265	Am	Americium
266	AM	Amplitude Modulation and Ante Meridiem; see entry,Armenia (ISO 3166 digram)
267	AM1	Airman 1st class
268	AMCB	U.S. Army/Marine Corps Board
269	AMFOM	Advanced Missile Fly Out Model
270	AMFR	Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
271	AMFRS	Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
272	AML	Acute Myeloid Leukaemia
273	AMLCD	Active Matrix Liquid Crystal Display
274	AMLO	Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
275	AMO	Atlantic Multidecadal Oscillation
276	AMOLED	Active-matrix organic light-emitting diode
277	AMOS	Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
278	AMP	Adenosine MonoPhosphate,Automated Mission Planner
279	AMRAAM	Advanced Medium-Range Air-to-Air Missile
280	AMRDEC	U.S. Aviation & Missile Research,Development,& Engineering Center
281	AMS	Agriculture Marketing Service,American Mathematical Society
282	AMSAA	U.S. Army Materiel Systems Analysis Activity
283	AMSO	U.S. Army Model and Simulation Office
284	AMSU	Advanced Microwave Sounding Unit
285	AMTE	UK Admiralty Marine Technology Establishment (1977-1984)
286	AN	Netherlands Antilles (ISO 3166 digram)
287	aN	Attonewton
288	ANA	Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body,Australian National Airways,Australian Natives' Association
289	ANC	African National Congress
290	AND	Andorra (ISO 3166 trigram)
291	ANFO	Ammonium nitrate/fuel oil (explosive)
292	ANGLiCo	Air/Naval Gunfire Liaison Company
293	ANL	Argonne National Laboratory
294	ANM	Acoustic Noise Monitor
295	ANOVA	ANalysis Of VAriance
296	ANS	Applied and Natural Sciences
297	ANSI	American National Standards Institute
298	ANT	Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram,but not ISO 3166 or FIFA)
299	ANTM	America's Next Top Model
300	ANTY	Acronyms,No Thank You
301	ANWR	Arctic National Wildlife Refuge /ˈænwɑr/
302	ANZ	Australia and New Zealand Banking Group
303	ANZAC	Australian and New Zealand Army Corps
304	AO	Angola (ISO 3166 digram),Approach Officer (submarine),Area of Operations
305	AOC	Air Operations Centre,Air Officer Commanding
306	AOD	Adrenalin O.D. (punk rock band)
307	AOI	Angle Of Incidence (Arab Organization for Industrialization)
308	AOL	America OnLine
309	AOR	Area of Responsibility
310	AOSTH	Adventures of Sonic the Hedgehog
311	AOTS	Attack of the Show!
312	AOU	American Ornithologists' Union
313	AP	Advanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
314	APB	All Points Bulletin (police jargon)
315	APEC	Asia Pacific Economic Cooperation
316	APEDS	AMSAA Performance Estimates Data System
317	APEX	Applied Physics Express
318	APHA	American Public Health Association
319	APHIS	Animal and Plant Health Inspection Service
320	APL	Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
321	APOD	Aerial Port (Airport) Of Debarkation
322	APOE	Aerial Port (Airport) Of Embarkation
323	APOLLO	Apache Point Observatory Lunar Laser-ranging Operation
324	APP	Allied Procedural Publication
325	APR	Annual Percentage Rate
326	AQIM	Al-Qaeda in the Islamic Maghreb
327	AR	Argentina (ISO 3166 digram),Arkansas (postal symbol),Armour,Arunachal Pradesh (Indian state code)
328	Ar	Argon
329	ARAG	Advanced Research and Assessment Group
330	ARB	Administrative Review Board
331	ARBA	Army Review Boards Agency
332	ARCA	Automobile Racing Club of America
333	ARCENT	United States Army Central Command
334	ARDA	Advanced Research and Development Activity (became DTO 2006)
335	ARF	ASEAN Regional Forum
336	ARG	Argentina (ISO 3166 trigram)
337	ARH	Armed Reconnaissance Helicopter
338	ARNet	Acquisition Reform Network
339	ARP	Applied Research Programme
340	ARPA	Advanced Research Projects Agency
341	ARRC	ACE Rapid Reaction Corps
342	ARRF	Allied Rapid Reaction Force
343	ARRL	American Radio Relay League
344	ARSC	Arctic Region Supercomputing Center
345	ARSPACE	U.S. Army Space Command
346	ARTCC	Air Route Traffic Control Center
347	ARWG	Army Research Working Group
348	AS	ActionScript
349	AS	American Samoa (postal symbol; ISO 3166 digram),Assam / Asom (Indian state code)
350	As	Arsenic
351	aS	Attosiemens
352	ASA	AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
353	ASAP	As Soon As Possible
354	ASARS	Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
355	asbl	association sans but lucratif (French 'Non-profit organisation')
356	ASBO	Anti-Social Behaviour Order
357	ASCAP	American Society of Composers,Authors,and Publishers
358	ASCC	Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
359	ASCII	American Standard Code for Information Interchange
360	ASD	(U.S.) Assistant Secretary of Defense,autism spectrum disorder
361	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
362	ASEAN	Association of Southeast Asian Nations
363	ASFAR	Americans for a Society Free of Age Restrictions
364	ASG	Area Support Group
365	ASIC	Australian Securities and Investments Commission,Aviation Security Identification Card
366	ASICS	Anima sana in corpore sano (Latin for 'A sound mind in a sound body') (athletic shoe manufacturer)
367	ASIO	Australian Security Intelligence Organisation,Audio stream input output
368	ASIP	Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
369	ASL	Above Sea Level,American Sign Language (also known as Ameslan),'Age,Sex,Location?' (Internet slang)
370	ASM	Air-to-Surface Missile,American Samoa (ISO 3166 trigram),American Society for Metals,American Society for Microbiology
371	ASMB	American Society for Matrix Biology,Adult Swim Message Board
372	ASME	American Society of Mechanical Engineers,American Society of Magazine ors
373	ASMP	Air-Sol Moyenne Portée missile (French 'Medium-range air to surface'),Asymmetric multiprocessing
374	ASN	Associate of Science in Nursing
375	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
376	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
377	ASPI	Australian Strategic Policy Institute
378	ASR	Alkali-silica reaction,Anti Slip Regulation
379	ASRAAM	Advanced Short-Range Air-to-Air Missile
380	ASSC	Association for the Scientific Study of Consciousness
381	AST	Atlantic Standard Time (UTC−4 hours)
382	ASTIA	Armed Services Technical Information Agency
383	ASTM	American Society for Testing and Materials
384	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
385	ASUW	AntiSUrface Warfare
386	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
387	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)
388	ASW	AntiSubmarine Warfare
389	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
390	ASX	Advanced Stream Redirector,Australian Securities Exchange
391	AT	Anti-Tank,Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
392	At	Astatine
393	aT	Attotesla
394	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
395	ATAC	Air Transportable Acoustic Communications
396	ATAPI	Advanced Technology Attachment Packet Interface
397	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
398	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
399	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
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	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)
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	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	AYBABTU	All Your Base Are Belong To Us
454	AYU	As Yet Unknown
455	AZ	Arizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
456	AZE	Azerbaijan (ISO 3166 trigram)
457	AZUR	Actions en zone urbaine (French for: Urban Operations)
458	B2B	Business to Business
459	B2C	Business to Consumer
460	B2G	Business to Government
461	B2E	Business to Employee
462	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]
463	BB	Barbados (ISO 3166 digram),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
464	BBB	Better Business Bureau,Blood-brain barrier
465	BBC	Breeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
466	BBL	Be Back Later,Bird Banding Laboratory,British Basketball League
467	BBN	Bolt,Beranek and Newman
468	BBQ	Barbecue
469	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)
470	BBYO	B'nai B'rith Youth Organization
471	BC	Before Christ,Blind Copy (in emailers),Boston College,British Columbia (postal symbol)
472	BCA	Bachelor of Computer Application,Black Coaches & Administrators
473	BCC	Blind Carbon Copy
474	BCCI	Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
475	BEA	Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
476	BEL	Belgium (ISO 3166 trigram)
477	BEN	Benin (ISO 3166 trigram)
478	BEO	Banquet Event Order
479	BERC	Business Environmental Resource Center
480	BER	Bit Error Rate
481	BH	Bahrain (ISO 3166 digram)
482	BHR	Bahrain (ISO 3166 trigram)
483	BNF	Backus-Naur Form (computing), British National Formulary
484	BNICE	Biological,Nuclear,Incendiary,Chemical,and Explosive Agents
485	BNP	British National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
486	BNS	Bank of Nova Scotia
487	BNSF	Burlington Northern Santa Fe (also AAR reporting mark)
488	BO	Back Orifice,Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
489	BOAC	British Overseas Airways Corporation (predecessor of British Airways)
490	BoAML	Bank of America Merrill Lynch
491	BOC	British Orthodontic Society, British Oxygen Company
492	BÖC	Blue Öyster Cult
493	BODMAS	Brackets,Orders,Division,Multiplication,Addition,Subtraction
494	BOFH	Bastard Operator From Hell
495	BOGA	Bend Over and Grab Ankles
496	BOGOF	Buy One,Get One Free
497	BOGs	Bunch of Guys
498	BOI	Balance Of Investment,Basis Of Issue
499	BOL	Bolivia (ISO 3166 trigram)
500	BOM	Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
501	BOPD	Barrel of Oil Per Day
502	BOS	Battlefield Operating System
503	BOT	Balance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
504	BP	Battle Position,British Petroleum (today,BP does not officially stand for anything),Bp , Bishop,BPD , Bipolar Personality Disorder,BPM , Beats Per Minute,BPMo , Business Process Mobility
505	BPV	Battlefield Planning Visualization,Bovine papillomavirus
506	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)
507	BR	Brazil (ISO 3166 digram) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
508	BRA	Brazil (ISO 3166 trigram)
509	BRAG	Bicycle Ride Across Georgia
510	BRASS	Breathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
511	BRIC	Brazil, Russia, India, and China
512	BRICS	Brazil, Russia, India, China, and South Africa
513	BSA	Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
514	BSatCoP	Benjamin Sniddlegrass and the Cauldron of Penguins
515	BSE	Bovine Spongiform Encephalopathy (better known as mad cow disease)
516	BSN	Baloncesto Superior Nacional (Spanish,'National Superior Basketball'; top Puerto Rican league),Bank Simpanan Nasional (Malay,'National Savings Bank'; government-owned Malaysian bank)
517	BSNL	Bharat Sanchar Nigam Limited,Bachelor of Science in Nursing
518	BSoD	Blue Screen of Death (distinct from BSD)
519	BSP	Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
520	BST	Binary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
521	BSW	British Standard Whitworth (screw thread)
522	BSX	Bendigo Stock Exchange
523	BT	Baal teshuva (Hebrew,'master of repentance') ,used to describe a Jew who adopts Orthodox Judaism as an adult,Bathythermograph,Bhutan (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
524	Bt	Baronet,Bacillus thuringiensis
525	BTO	Built To Order
526	BTP	British Transport Police
527	BTR	Bronetransporter (БТР = Бронетранспортер '(Heavy) Armoured (Personnel) Transporter')
528	BTU	British Thermal Unit
529	BTW	By The Way
530	BU	Burma (ISO 3166 digram; obsolete since 1989)
531	BUAV	British Union for the Abolition of Vivisection
532	BUG-E	Battlefield Universal Gateway Equipment ('buggy')
533	BUNO	Bureau Number (aircraft serial number)
534	BUR	Burma (ISO 3166 trigram; obsolete since 1989)
535	BV	Background Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram)
536	BVD	Bradley,Voorhees & Day (underwear manufacturer)
537	BVR	Beyond Visual Range
538	BVT	Bouvet Island (ISO 3166 trigram)
539	B&W	Babcock & Wilcox, Black and White, Bowers & Wilkins
540	BW	Bring Wedges (ISO digram)
541	BW	Botswana (ISO 3166 digram)
542	BWA	Botswana (ISO 3166 trigram)
543	BWARS	Bees,Wasps & Ants Recording Society
544	BWC	Biological and Toxin Weapons Convention
545	BWR	Boiling-Water Reactor
546	BX	Base eXchange
547	BY	Belarus (ISO 3166 digram), Bavaria
548	BYOB	Bring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
549	BYOC	Bring Your Own Computer (play on BYOB)
550	BYOF	Bring Your Own Flask
551	BYS	Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
552	BYU	Brigham Young University
553	BZ	Belize (ISO 3166 digram)
554	BZP	Benzylpiperazine
555	C	Carbon, Coulomb, One Hundred (in Roman numerals)
556	c	Centi
557	C2C	Consumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
558	c2c	the British rail company formerly known as LTS Rail
559	Ca	Calcium
560	CA	California (postal symbol),Canada (ISO 3166 digram),Catalonia,Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia
561	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
562	CAAT	Campaign Against Arms Trade,Center for Alternatives to Animal Testing
563	CAC	California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
564	CACM	Central American Common Market
565	CACM	Communications of the ACM
566	CADCAM	Computer-Aided Design/Computer-Aided Manufacturing
567	CADMID	Concept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
568	CADPAT	CAnadian Disruptive PATtern
569	CAE	Canadian Aviation Electronics (originally),Certificate in Advanced English
570	CAEn	Close Action Engagement (constructive simulation)
571	CAF	Central African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
572	CAFAD	Combined Arms For Air Defence
573	CAFDE	Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
574	CAFE	Corporate Average Fuel Economy standard
575	CAI	Computer Assisted Instruction
576	CAIR	Council on American-Islamic Relations
577	CALABARZON	A region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
578	CALL	Center for Army Lessons Learned
579	CALM	Communications,Air-interface,Long and Medium range
580	CalPERS	California Public Employees' Retirement System
581	Caltrans	California Department of Transpotation
582	CAM	Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
583	CAMRA	CAMpaign for Real Ale
584	CAN	Canada (ISO 3166 trigram)
585	CANDU	CANada Deuterium Uranium (nuclear reactor design)
586	Canola	Canadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
587	CAPES	CAPability Evaluation System,Combined Arms Planning and Execution System
588	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)
589	CARMONETTE	Computerized Monte Carlo Simulation
590	CARP	Computed Air Release Point
591	CART	Championship Auto Racing Teams (now defunct)
592	CAS	Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
593	CASA	Civil Aviation Safety Authority
594	CASE	Cellular ammunition storage equipment,Computer-Aided Software Engineering
595	CASS	Command Activated Sonobuoy System
596	CASTFOREM	Combined Arms and Support Task FORce Evaluation Model
597	CASTOR	Canadian Automatic Small Telescopes for Orbital Research
598	CAT	Community Acceptance Testing
599	CATK	Counterattack
600	CATS	Computer Active Technology Suspension
601	CATT	Combined Arms Tactical Trainer
602	CAV	Cavalry
603	CAVOK	Ceiling And Visibility OK ('Kav-okay')
604	CAW	Canadian Auto Workers (trade union)
605	CB	Citizens' Band radio
606	CBASSE	Commission on Behavioral And Social Sciences and Education ('sea bass')
607	CBC	Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
608	CBE	Commander of the Order of the British Empire,Cab Beside Engine (see truck)
609	CBF	Confederação Brasileira de Futebol (Portuguese,'Brazilian Football Confederation')
610	CBGB	Country,Blue Grass,and Blues (former New York City nightclub)
611	CBLA	Comparative bullet lead analysis
612	CBM	Canadian Baptist Ministries
613	CBM	Commodore Business Machines
614	CBML	Coalition Battle Management Language
615	CBN	CardsApp Brand Number
616	CBOL	Consortium for the Barcode of Life
617	CBOT	Chicago Board of Trade
618	CBP	Customs and Border Protection
619	CBR	Case-Based Reasoning
620	CBRN	Chemical,Biological,Radiological,or Nuclear (weapon or event)
621	CBRNE	Chemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
622	CBS	Columbia Broadcasting System,Corps Battle Simulation
623	CBUS	Columbus,Ohio
624	CC	carbon copy
625	CCA	Counter Command Activity
626	CCC	Canterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
627	CCCP	Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
628	CCD	Confraternity of Christian Doctrine (Catechism)
629	CCF	Cartoon Cartoon Fridays
630	CCG	Canadian Coast Guard,Collectible Card Game
631	CCGC	Canadian Coast Guard Cutter,Canadian Coast Guard College
632	CCGH	Canadian Coast Guard Hovercraft
633	CCGS	Canadian Coast Guard Ship,Christ Church Grammar School
634	CCH	Computer-Controlled Hostile
635	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)
636	CCII	Command and Control Information Infrastructure,Community Capital Investment Initiative
637	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
638	CCIT	Comité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
639	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)
640	CCK	Cholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
641	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
642	CCOC	Canadian Children's Opera Chorus,Crosley Car Owners Club
643	CCOP	Coalition Common Operating/Operational Picture
644	CCP	Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
645	CCPA	Consumer Credit Protection Act
646	CCR	Creedence Clearwater Revival
647	CCRAp	Canadian Conservative Reform Alliance party
648	CCRP	Command and Control Research Program
649	CCRTS	Command and Control Research and Technology Symposium
650	CCSCS	Consultative Committee for Space Data Systems
651	CCSCS	Coordinadora de Centrales Sindicales del Cono Sur
652	CCSIL	Command and Control Simulation Interface Language ('cecil')
653	CCSK	Cyclic Code Shift Keying
654	CCT	Current Commitments Team
655	Cd	Cadmium
656	cd	Candela
657	CD	Compact Disc
658	CD1	Cluster of Differentiation 1 (a small gene family)
659	CDA	UK Centre for Defence Analysis
660	CDD	Capabilities Development Document
661	CDE	Chemical Defence Equipment
662	CDIAC	Carbon Dioxide Information Analysis Center ('see-dee-ack')
663	CDipAF	Certified Diploma in Accounting and Finance
664	CDL	Commercial driver's license
665	CDM	Clean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
666	CDMA	Code Division Multiple Access
667	CDMSII	Cryogenic Dark Matter Search II
668	Cdr	Commander
669	CDT	Central Daylight Time (UTC−5 hours)
670	Cdt	Commandant
671	Ce	Cerium
672	CE	Christian/Common Era
673	CEA	Campaign Effectiveness Analysis
674	CECOM	U.S. Army Communications and Electronics Command
675	CEDEX	Courrier d'entreprise à distribution exceptionnelle (French,'Company Mail with Exceptional Distribution'; 'exceptional' refers to the volume of mail)
676	CEGEP	Collège d'enseignement général et professionnel (French,'College of General and Vocational Education')
677	CEI	Competitive Enterprise Institute
678	CENTCOM	United States Central Command
679	CENTO	Central Treaty Organization (Baghdad Pact)
680	CENZUB	Centre d'entraînement aux actions en zone urbaine (French,'Urban Operations Training Centre')
681	CEO	Chief Executive Officer
682	CEP	Circular Error Probable
683	CEPT	Conférence européenne des administrations des postes et des télécommunications (French,'European Conference of Postal and Telecommunications Administrations')
684	CERCLA	U.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
685	CERDEC	U.S. Communications-Electronics Research,Development and Engineering Center
686	CERGA	Centre de recherches en géodynamique et astrométrie (French,'Astrometry and Geodynamics Research Centre')
687	CERN	Centre européen pour la recherche nucléaire (French,'European Organization for Nuclear Research')
688	CERT	Computer Emergency Response Team
689	CESS	Centre for Earth Science Studies (India)
690	CEST	Central European Summer Time
691	CET	Central European Time
692	CEWC	Council for Education in World Citizenship
693	Cf	Californium
694	CF	Canadian Forces,Central African Republic (ISO 3166 digram)
695	CFA	Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
696	CFAR	Christine's,Federal Acquisition Regulation
697	CFC	ChloroFluoroCarbon,Canadian Fish Company
698	CFES	Continuous Flow Electrophoresis System
699	CFFZ	Call For Fire Zone
700	CFG	Context-free grammar,Control flow graph
701	CFHT	Canada-France-Hawaii Telescope
702	CFI	Center for Inquiry (CSICOP)
703	CFL	Canadian Football League,Co-ordinated Fire Line
704	CFLCC	Coalition Forces Land Component Command
705	CFM	Certified Facilities Manager
706	CFO	Chief Financial Officer
707	CFP	Call for papers, College Football Playoff, Common Fisheries Policy (EU)
708	CFR	Code of Federal Regulations,Căile Ferate Române (Romanian,'Romanian Railways')
709	CFRP	Carbon fibre reinforced plastic
710	CFS	Chronic Fatigue Syndrome
711	CFSP	Common Foreign and Security Policy
712	CFU	Colony Forming Unit in Microbiology
713	CFV	Cavalry Fighting Vehicle
714	CFZ	Critical Friendly Zone
715	CG	Client Group,Computer Graphics,Controls Group,Republic of the Congo (ISO 3166 digram)
716	CGH	Comparative Genomic Hybridisation
717	CGIG	Cross-Government Implementation Group
718	CGO	Republic of the Congo (IOC and FIFA trigram,but not ISO 3166)
719	CGS	Chief of the General Staff
720	CGT	Capital Gains Tax
721	ch	ch(L) is used to denote the Chern character of a line bundle
722	CH	Chieftain tank,Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
723	CHAMPUS	(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
724	CHAOS	Cambridge Heart Anti-Oxidant Study
725	CHAPS	Clearing House Automated Payment System
726	CHDK	Canon Hack Development Kit (Canon camera firmware hack)
727	CHE	Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
728	CHI	Columbia Helicopters,Inc
729	CHiP	California Highway Patrol
730	CHIPS	Cosmic Hot Interstellar Plasma Spectrometer
731	CHL	Chile (ISO 3166 trigram)
732	CHLA	Core Historical Literature of Agriculture
733	CHN	China (ISO 3166 trigram)
734	CHOGM	Commonwealth Heads of Government Meeting
735	CHPSO	California Hospital Patient Safety Organization
736	CHRS	Canadian Heart Rhythm Society
737	CHT	Certified Hand Therapist
738	CI	Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
739	Ci	Curie
740	CIA	Cairo International Airport, Culinary Institute of America
741	CIAO	Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
742	CIB	Complete In Box (Internet auction/trading listings)
743	CIBC	Canadian Imperial Bank of Commerce
744	CICS	Customer Information Control System (IBM mainframe software; 'kicks' or 'C-I-C-S')
745	CID	Certified Interior Designer
746	CIEF	Comité international d'enregistrement des fréquences (International Frequency Registration Board)
747	CIF	Cost,Insurance,and Freight (Paid) (shipping)
748	CIMMYT	Centro Internacional de Mejoramiento de Maíz Y Trigo (Spanish,'International Maize and Wheat Improvement Center')
749	CINC	Commander in Chief
750	CINEOS	Campo Imperatore Near-Earth Object Survey
751	CIO	Chief information officer,Congress of Industrial Organizations
752	CIPE	(European) Centre for International Political Economy
753	CIR	(Commander's) Critical Information Requirements
754	CIR	Corotating Interaction Region
755	CIS	Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
756	CISA	(U.S.) C4I Integration Support Activity
757	CISB	Complete In Sealed Box (Internet auction/trading listings)
758	CISPR	Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
759	CISSP	Certified Information Systems Security Professional
760	CITES	Convention on International Trade in Endangered Species (of Wild Fauna and Flora) ('sigh-tease')
761	CIV	Côte d'Ivoire (ISO 3166 trigram)
762	CIVETS	Colombia,Indonesia,Vietnam,Egypt,Turkey,South Africa (economics)
763	CIVPOP	Civilian Population
764	CIWS	Close-In Weapon System
765	CJ	Criminal Justice
766	CJC	Canadian Jewish Congress,Cold Junction Compensation
767	CJCS	Chairman of the Joint Chiefs of Staff
768	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
769	CJO	Chief of Joint Operations
770	CJTF	Combined Joint Task Force
771	CK	Cook Islands (ISO 3166 digram)
772	CKA	commonly known as, Canada Kicks Ass
773	CKND	Codename: Kids Next Door
774	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
775	Cl	Chlorine
776	CLA	Clutterers Anonymous
777	CLEC	Competitive Local Exchange Carrier
778	CLEMARS	California Law Enforcement Mutual Aid Radio System
779	CLIC	Compact LInear Collider
780	CLO	Cornell Lab of Ornithology
781	CLOS	Command to Line-Of-Sight (missile control system)
782	CLPFC	CentroLateral PreFrontal Cortex
783	CLRP	College Loan Repayment Program
784	CM	Cameroon (ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
785	Cm	Curium
786	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
787	CMHC	Canada Mortgage and Housing Corporation
788	CMIIAW	Correct me if I am wrong
789	CMIS	Common management information service
790	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
791	CMLL	Consejo Mundial de Lucha Libre (Spanish,'Worldwide Wrestling Council'—Mexican professional wrestling promotion)
792	CMMC	Corps Materiel Management Centre
793	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
794	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
795	CMP	Common [Operating/Operational] Maritime Picture
796	CMPD	Charlotte Mecklenburg Police Department
797	CMPD	Chronic Myeloproliferative Disease
798	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
799	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
800	CMT	Country Music Television
801	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
802	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)
803	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
804	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram)
805	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
806	CNBC	Consumer News and Business Channel
807	CND	Campaign for Nuclear Disarmament,Computer Network Defence
808	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
809	CNF	Cost and Freight
810	CNI	Clinical Nursing Intern
811	CNI	Communications,Navigation and Identification
812	CNN	Cable News Network,Cellular Nonlinear Network
813	CNV	Copy-Number Variable (genetics)
814	Co	Cobalt
815	COB	Close Of Business [day]
816	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
817	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
818	CoDA	Co-Dependents Anonymous
819	COGENT	Cognitive Objects within a Graphical EnviroNmenT
820	COIL	Chemical Oxygen Iodine Laser
821	COK	Cook Islands (ISO 3166 trigram)
822	COL	Colombia (ISO 3166 trigram)
823	COLA	Cost Of Living Adjustment
824	CONAD	U.S. Continental Air Defense Command
825	CONMEBOL	Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for 'South American Football Confederation')
826	CONUS	Continental United States
827	COO	Chief Operating Officer
828	COPE	U.K. Committee On Publication Ethics
829	COPUS	U.K. Committee on the Public Understanding of Science
830	CORD	Common Operational Requirements Document
831	CORE	Consortium for Oceanographic Research and Education
832	COS	Cooper Ornithological Society
833	COSER	COoperative SERvice
834	CoT	Car of Tomorrow (former NASCAR race car design)
835	COTS	Commercial Off The Shelf
836	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
837	CPA	Certified Public Accountant
838	CPAC	Conservative Political Action Conference,Cable Public Affairs Channel ('see-pack')
839	CPCU	Certified Property Casualty Underwriter
840	CPD	Capabilities Production Document
841	CPE	Certificate of Proficiency in English
842	CPE	Certified Professional Ergonomist
843	CPF	Calibration Parameter File,Canadian Patrol Frigate
844	CPG	Clinical Practice Guideline
845	CPIM	Certification on Production and Inventory Management
846	CPIR	Computationally-Private Information Retrieval
847	CPON	Certified Pediatric Oncology Nurse
848	CPPCC	Chinese People's Political Consultative Conference
849	CPR	Canadian Pacific Railway
850	CPR	Cardiopulmonary resuscitation
851	CPSM	Continuous Phase Shift Modulation
852	CPSU	Communist Party of the Soviet Union
853	CPT	Contingency Planning Team
854	CPU	Contract Postal Unit
855	CPV	Cape Verde (ISO 3166 trigram)
856	CPX	Command Post eXercise
857	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator)
858	CQD	Close Quarters Drill (Morse distress code preceding SOS: CQ 'calling all stations',D 'Distress'; often incorrectly interpreted as 'Come Quick,Distress')
859	Cr	Chromium
860	CR	Costa Rica (ISO 3166 digram)
861	CRAM	Combined Radiometric Correction Model
862	CRD	Capstone Requirements Document
863	CREB	Cyclic AMP-response Element Binding (protein)
864	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
865	CREN	Christian Real Estate Network Real Estate Association
866	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
867	CRIPL	Consolidated Remain-In-Place List
868	CRM	Cardiac Rhythm Management,Customer Relationship Management
869	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
870	CRP	Committee for the Re-Election of the President,Control and Reporting Post
871	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
872	CRTC	Canadian Radio-television and Telecommunications Commission
873	Cs	Caesium
874	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
875	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
876	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
877	CSG	Corps Support Group
878	CSI	see entry
879	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
880	CSIP	Commercial Stable Image Platform (AMD)
881	CSIS	Canadian Security Intelligence Service ('seessiss'),(U.S.) Center for Strategic & International Studies
882	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
883	CSL	U.K. Central Science Laboratory
884	CSPI	Center for Science in the Public Interest
885	CSR	Control Supply Rate
886	CSR	Corporate Social Responsibility
887	CSRC	Conflict Studies Research Centre
888	CSRF	Cross-Site Request Forgery
889	CST	Central Standard Time (UTC−6 hours)
890	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)
891	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')
892	CTBT	Comprehensive [Nuclear] Test Ban Treaty
893	CTDB	Compact Terrain Data Base (file format)
894	CTE	Canton and Enderbury Islands (ISO 3166 trigram; obsolete 1984),Chronic traumatic encephalopathy
895	CTGF	connective tissue growth factor
896	CTI	Co-operative Target Identification
897	CTIL	Critical Tracked Items List
898	CTIS	Central Tire Inflation System
899	CTMS	Clinical Trial Management System
900	CTO	Chief Technical Officer,Chief Technology Officer
901	CTS	Clear-To-Send,Collective Training Standards,Communications Technology Service,Contract Technical Services,Conversation Time Sharing,COSMIC Top Secret
902	CTSS	Compatible Time-Sharing System
903	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
904	CTVT	Canine Transmissible Venereal Tumour
905	CU	Carrie Underwood, Cuba (ISO 3166 digram)
906	Cu	Copper (Latin 'Cuprum')
907	CUB	Cuba (ISO 3166 trigram)
908	CUCV	Commercial Utility Cargo Vehicle
909	CUNY	City University of New York ('CUE-knee')
910	CUPE	Canadian Union of Public Employees ('CUE-pee')
911	CUPS	Common Unix Printing System
912	CUPW	Canadian Union of Postal Workers
913	CUREA	Consortium for Undergraduate Research and Education in Astronomy
914	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
915	CUW	Curaçao (ISO 3166 trigram)
916	CV	curriculum vitae (résumé)
917	CVLL	Crypto Variable Logic Label
918	CVSD	Continuous Variable Slope Delta (modulation)
919	CVT	Continuously Variable Transmission
920	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer
921	CWA	Communications Workers of America
922	CWC	Chemical Weapons Convention
923	CWRU	Case Western Reserve University
924	CWS	Canadian Wildlife Service
925	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
926	CXR	Christmas Island (ISO 3166 trigram)
927	CY	Calendar year, or: Cyprus (ISO 3166 country code digram)
928	CYM	Cayman Islands (ISO 3166 trigram)
929	CZE	Czech Republic (ISO 3166 trigram)
930	CZF	(Christian Zombie Fan)
931	CZMA	(US) Coastal Zone Management Act
932	d	Deci
933	D	Deuterium
934	DA	Debtors Anonymous,U.S. Department of the Army,District Attorney
935	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')
936	DAES	Defence Acquisition Executive Summary,(UK MoD) Directorate of Analysis,Experimentation and Simulation
937	DAF	Dissolved Air Flotation,a technique used in water treatment
938	DAFIF	Digital Aeronautical Flight Information File
939	DAK	Disney's Animal Kingdom
940	DAO	Division Ammunition Officer
941	DAQ	Data acquisition,Delivered Audio Quality
942	DARE	Drug Abuse Resistance Education
943	DARO	(U.S.) Defense Airborne Reconnaissance Office
944	DARPA	U.S. Defense Advanced Research Projects Agency
945	DART	Disaster Assistance Response Team,Dublin Area Rapid Transit
946	DAS	Defensive Aids Suite
947	DASD	(U.S.) Deputy Assistant Secretary of Defense
948	DASL	Datapoint's Advanced Systems Language
949	DAU	(U.S.) Defense Acquisition University
950	DAWN	(U.S.) Drug Abuse Warning Network
951	dB	Decibel
952	DB	Deutsche Bahn
953	Db	Dubnium
954	DBA	De Bellis Antiquitatis (miniature wargaming rules)
955	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
956	DBDO	Desert BDO
957	DBE	Dame Commander of the Order of the British Empire
958	DBF	Detection By Fire (weapon launch signature)
959	DBR	De Bellis Renationis (miniature wargaming rules)
960	DBRA	Davis-Bacon Related Acts
961	DBS	Direct Broadcast Services (television)
962	DC	da capo,Italian Democrazia Cristiana,Digital Compass,Direct Current,District of Columbia (postal symbol),Douglas Aircraft Company,Dublin Core,Duty Cycle
963	DCA	Defensive Counter Air,Drum Corps Associates,DiChloroAcetate
964	DCAA	(U.S.) Defense Contract Audit Agency
965	DCAS	Devon and Cornwall Archery Society
966	DCC	Dallas Christian College
967	DCD	[Organ] Donation after Cardiac Death
968	DCE	Data Communication Equipment
969	DCFC	Death Cab for Cutie
970	DCI	Detection,Classification and Identification,Drum Corps International,Duellists' Convocation International,now known simply by the initials
971	DCL	Disney Cruise Line
972	DCN	Deacon
973	DCOM	Disney Channel Original Movie
974	DCSOPS	Deputy Chief of Staff for Operations and plans
975	DCW	Digital Chart of the World
976	DCYSC	Discovery Channel Young Scientist Challenge
977	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
978	DDA	Deputy District Attorney
979	DDN	U.S. Defense Data Network
980	DDS	Doctor of Dental Surgery
981	DDT	Dichloro-Diphenyl-Trichloroethane (insecticide),Dynamic Debugging Tool (computing),DE[edit]
982	DE	Delaware (postal symbol),Germany (ISO 3166 digram)
983	DEA	Drug Enforcement Administration
984	DEA	Drug Enforcement Agency
985	DEC	Department of Environmental Conservation,Digital Equipment Corporation,Disasters Emergency Committee
986	DeCA	(U.S.) Defense Commissary Agency
987	DEFCON	Defence readiness condition
988	DEFRA	(UK) Department for Environment,Food and Rural Affairs
989	DELT	Dual Ended Line Test (ing)
990	DEM	Data Exchange Mechanism,Digital Elevation Model
991	DEN	Denmark (IOC and FIFA trigram,but not ISO 3166)
992	DEPSECDEF	(U.S.) Deputy Secretary of Defense
993	DERA	British Defence Evaluation and Research Agency (1995-2001)
994	DES	Deep Ecliptic Survey
995	DEU	Germany (ISO 3166 trigram)
996	DF	Direct Fire,Direction Finding,Distrito Federal (Spanish and Portuguese for 'federal district')
997	DFAS	(U.S.) Defense Finance and Accounting Service
998	DFB	Deutscher Fußball-Bund (German for 'German Football Association')
999	DFCB	Data Format Control Book
1000	DfID	UK Department for International Development
1001	DFM	Discrete Field Model see Superluminal motion
1002	DFM	Dynamic Flowgraph Methodology
1003	DFSP	Dermatofibrosarcoma protuberans
1004	DfT	UK Department for Transport
1005	DFTBA	Don't Forget To Be Awesome,a term commonly used by the Vlogbrothers
1006	DG	Dei gratia (Latin,'by the grace of God'),Director-General,Data General
1007	DGA	Direction générale des armées (French 'Armed Forces General Directorate')
1008	DGPS	Differential GPS
1009	DGZ	Desired Ground Zero
1010	DHA	DocosaHexaenoic Acid
1011	DHHS	(U.S.) Department of Health and Human Services
1012	DHRA	(U.S.) DoD Human Resources Activity
1013	DHS	U.S. Department of Homeland Security
1014	DHSS	UK Department of Health and Social Security
1015	DHTFYSS	U.S. Don't Have Time For You Silly S****
1016	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
1017	DIA	U.S. Defense Intelligence Agency
1018	DIAC	Department of Immigration and Citizenship (Australia) [1]
1019	DiC	Design Island Centre (computing usually used in a teaching situation)
1020	DICASS	DIrectional Command Activated Sonobuoy System
1021	DIFAR	DIrectional Frequency Analysis and Recording
1022	DIME	Dense Inert Metal Explosive
1023	DIP	Dual In-line Package (electronics)
1024	DIPS	Defense independent pitching statistics
1025	DIR	Defence Industrial Research
1026	DISCOM	Division Support Command
1027	DISE	Deployable Intelligence Support Element
1028	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
1029	DITY	Do-It-Yourself
1030	DIVAD	Division Air Defence
1031	DIY	Do It Yourself
1032	DJI	Djibouti (ISO 3166 trigram)
1033	DK	Denmark (ISO 3166 digram)
1034	DL	Dexter's Laboratory
1035	DLIC	Detachment Left-In-Contact
1036	DLIR	Depot-Level Inspection and Repair
1037	DLPMC	DorsoLateral PreMotor Cortex
1038	DLRP	Data Link Reference Point
1039	DLS	Deep Lens Survey
1040	DLSA	(U.S.) Defense Legal Services Agency
1041	DLSc	Diploma in Library Science
1042	DLTBGYD	Don't let the bastards grind you down
1043	DMC	(U.S.) Defense Management Council
1044	DMCA	Digital Millennium Copyright Act
1045	DMM	Digital Multimeter
1046	DMOC	Distributed Mission Operations Centre
1047	DMPA	(U.S.) Defense Medical Programs Activity
1048	DMPFC	DorsoMedial PreFrontal Cortex
1049	DMPK	Drug Metabolism and Pharmacokinetics
1050	DMRB	Design Manual for Roads and Bridges
1051	DMS	U.S. Defense Message System
1052	DMSP	U.S. Defense Meteorological Satellite Program
1053	DMT	Dimethyltryptamine
1054	DMV	Department of Motor Vehicles
1055	DMZ	DeMilitarized Zone
1056	DN	Deacon
1057	DNAW	Day Night All Weather
1058	DNDi	Drugs for Neglected Diseases initiative
1059	DNDO	U.S. Domestic Nuclear Detection Office
1060	DNK	Denmark (ISO 3166 trigram)
1061	DNM	Defence Nuclear Material
1062	DNR	Do Not Resuscitate
1063	DNS	Domain Name System
1064	DO	Dominican Republic (ISO 3166 digram),Doctor of Osteopathic Medicine
1065	DOA	Dead On Arrival,Dead or Alive
1066	DOB	Date Of Birth
1067	DOD	U.S. Department of Defense
1068	DODAF	U.S. Department of Defense Architectural Framework
1069	DoDD	U.S. Department of Defense Directive
1070	DoDEA	(U.S.) Department of Defense Education Activity
1071	DOE	U.S. Department of Energy
1072	DOHC	Dual-OverHead-Cam engine
1073	DOI	U.S. Department of the Interior
1074	DORA	Defence of the Realm Act
1075	DOS	Density of State
1076	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
1077	DotD	Deal of the Day (marketing gimmick)
1078	DOW	Died of Wounds
1079	DP	Division de production (Algerian petroleum company)
1080	DPA	UK Defence Procurement Agency
1081	DPCO	Double-Pole Change Over
1082	DPDT	Double-Pole Double-Throw
1083	DPI	Dots Per Inch
1084	DPICM	Dual-Purpose Improved Conventional Munition
1085	DPKO	UN Department for Peacekeeping Operations
1086	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
1087	DPPDB	Digital Point Positioning Database
1088	DPRK	Democratic People's Republic of Korea
1089	DPST	Double-Pole Single-Throw
1090	DQ	Dairy Queen
1091	DR	Dead Reckoning,Danmarks Radio (Danish Broadcasting Corporation)
1092	DRC	Democratic Republic of the Congo
1093	DRDC	Defence Research & Development Canada
1094	DREA	Defence Research Establishment Atlantic (obsolete 2002)
1095	DRES	Defence Research Establishment Suffield (obsolete 2002)
1096	DRET	Defence Research Establishment Toronto (obsolete 2002)
1097	DREV	Defence Research Establishment Valcartier (obsolete 2002)
1098	DRIC	(U.S.) Defense Research Information Center
1099	DRMS	(U.S.) Defense Revitalization and Marketing Service
1100	DRPR	Drawing Practices
1101	DRT	Document Related Technologies
1102	Ds	Darmstadtium
1103	DSAS	Disney Sing Along Songs
1104	DSB	(U.S.) Defense Science Board
1105	DSCS	U.S. Defense Satellite Communications System
1106	DSCSOC	DSCS Operations Center
1107	DSE	Dry Sheep Equivalent
1108	DSG	Direct-Shift Gearbox
1109	DSID	Dismounted Soldier Identification System
1110	DSL	Digital Subscriber Line
1111	DSLR	Digital single-lens reflex (camera)
1112	DSM	Diagnostic and Statistical Manual of Mental Disorders
1113	DSN	Deep Space Network
1114	DSPL	Design Specialists and Plans Language
1115	DSR	Deformed Special Relativity
1116	DST	Daylight Saving Time
1117	DSTL	British Defence Science and Technology Laboratory
1118	DSWA	(U.S.) Defense Special Weapons Agency
1119	DTA	Dental Technologists Association
1120	DTD	Digital Terrain Data
1121	DTG	Date-Time Group
1122	DTH	Direct To Home (television)
1123	DTI	UK Department of Trade and Industry
1124	DTIC	(U.S.) Defense Technical Information Center
1125	DTL	Diode-Transistor Logic (electronics)
1126	DTMF	Dual-tone multi-frequency signaling
1127	DTO	Disruptive Technology Office (was ARDA)
1128	DTR	Determine The Relationship
1129	DTSA	(U.S.) Defense Technology Security Administration
1130	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1131	DUSD	(U.S.) Deputy Under-Secretary of Defense
1132	DVLC	UK Driver and Vehicle Licencing Centre
1133	DVM	Doctor of Veterinary Medicine
1134	DVO	Direct View Optics
1135	DVOM	Digital Volt-Ohm Meter
1136	DVP	various meanings (disambiguation page)
1137	DW	Drum Workshop
1138	DWIM	Do What I Mean
1139	DWM	Doctor Who Magazine
1140	DWTS	Dancing with the Stars
1141	DWW	Down with Webster
1142	DXA	Dual-energy X-ray Absorptiometry
1143	DXM	DeXtroMethorphan
1144	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1145	Dy	Dysprosium
1146	DZA	Algeria (ISO 3166 trigram)
1147	E	East
1148	EABU	Explain Acronyms Before Use
1149	EAC	Echelons Above Corps
1150	EAPC	Euro-Atlantic Partnership Council
1151	EAST	Experimental Advanced Superconducting Tokamak
1152	EBD	Electronic Brake Distribution
1153	EBE	Extraterrestrial Biological Entity
1154	EBSA	Employee Benefits Security Administration
1155	EBW	Electron Beam Welding
1156	EBW	Exploding BridgeWire
1157	ECASS	European Centre for Analysis in the Social Sciences [1]
1158	ECBR	European Coalition for Biomedical Research
1159	ECCM	Electronic Counter-Counter-Measures
1160	ECFS	Electronic Case Filing System
1161	ECG	Electrocardiogram
1162	ECHR	European Court on Human Rights
1163	ECJ	European Court of Justice
1164	ECL	Emitter Coupled Logic (electronics)
1165	ECommHR	European Commission on Human Rights
1166	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1167	ECT	ElectroConvulsive Therapy
1168	ECtHR	European Court of Human Rights
1169	EDA	European Defence Agency
1170	EDAC	Error Detection And Correction
1171	EDCS	Environmental Data Coding Specification
1172	EDH	Eastman Dental Hospital
1173	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1174	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1175	EEC	European Economic Community (predecessor of the EU)
1176	EEG	ElectroEncephaloGram
1177	EENT	End Evening Nautical Twilight
1178	EEO	Equal Employment Opportunity
1179	EEOC	(U.S.) Equal Employment Opportunity Commission
1180	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1181	EFF	Electronic Frontier Foundation
1182	EFL	English as a Foreign Language
1183	EFM	Enterprise Feedback Management
1184	EFOA	European Fuel Oxygenates Association
1185	EFSA	European Food Safety Authority
1186	EFT	Electronic Fund Transfer
1187	EFV	Expeditionary Fighting Vehicle
1188	EG	Egypt (ISO 3166 digram)
1189	EGCG	EpiGalloCatechin-3-Gallate
1190	EGIS	Erieye Ground Interface Segment
1191	EGRET	Energetic Gamma-Ray Experiment Telescope
1192	EGY	Egypt (ISO 3166 trigram)
1193	EHF	Extremely High Frequency
1194	EHR	Equipment History Record
1195	Ei	Exbi
1196	EIA	Environmental Impact Assessment
1197	EIAH	Encyclopedia of Iranian Architectural History
1198	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1199	EIC	East India Company
1200	EICS	East India Company's Service
1201	eID	electronic ID
1202	EIRP	Effective Isotropic Radiated Power
1203	EIS	Environmental Impact Statement
1204	EJ	Exajoule
1205	EK	Exakelvin
1206	EKG	Electrocardiogram (from German Elektrokardiogramm)
1207	EKMS	Electronic Key Management System
1208	EL	Exalitre
1209	ELINT	Electronic Intelligence
1210	ELL	English Language Learner
1211	ELM	Edge-Localised Mode (plasma physics)
1212	ELO	Electric Light Orchestra
1213	ELSS	Emergency Life Support Stores
1214	EM	ElectroMagnetism/ElectroMagnetic
1215	Em	Exametre
1216	EMA	European Medicines Agency
1217	EMCON	(Electromagnetic) Emissions Control
1218	EMDG	Euro-Missile Dynamics Group
1219	EMDR	Eye Movement Desensitisation and Reprocessing
1220	EMEA	Europe,Middle East and Africa
1221	EMG	ElectroMyoGraph
1222	EMP	ElectroMagnetic Pulse
1223	EMS	Emergency Medical Services
1224	EMT	Emergency Medical Technician
1225	EN	Corps of Engineers,Exanewton
1226	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1227	ENE	East North-East
1228	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1229	ENTEC	Euro NATO Training Engineer Centre
1230	ENVL	Envelope
1231	ENY	Enemy
1232	EOD	Explosive Ordnance Disposal
1233	EOG	ElectroOculoGraphy
1234	EOM	End of Message
1235	EOSAT	Earth Observation Satellite
1236	EOSDIS	Earth Observation Satellite Data and Information System
1237	EP	European Parliament
1238	EP	Extended play
1239	EPCOT	Experimental Prototype Community Of Tomorrow
1240	EPGS	EOS Polar Ground Sites
1241	EPIRB	Emergency Position Indicating Radio Beacon
1242	EPL	English Premier League
1243	EPOS	Electronic Point Of Sale
1244	EPPA	Employee Polygraph Protection Act
1245	EPR	European Pressurised [Nuclear] Reactor
1246	EQ	Emotional Quotient
1247	Er	Erbium
1248	ERCIM	European Research Consortium for Informatics and Mathematics
1249	ERI	Eritrea (ISO 3166 trigram)
1250	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1251	EROS	Earth Resources Observation System
1252	ERP	Engineer Regulating Point
1253	ERR	Eesti Rahvusringhääling
1254	ERS	Earth Resources Survey
1255	ERTS	Earth Resources Technology Satellite (became Landsat)
1256	ERV	Endogenous RetroVirus
1257	ES	Electronic warfare Support,Exasiemens,Spain (ISO 3166 digram; from the country's native name of España)
1258	ESA	Electro-Spark Alloying, Endangered Species Act, European Space Agency
1259	ESC	Embryonic Stem Cell, Electronic Stability Control
1260	ESDP	European Security and Defence Policy
1261	ESE	East South-East
1262	ESH	Western Sahara (ISO 3166 trigram)
1263	ESL	English as a Second Language
1264	ESM	Electronic warfare Support Measures
1265	ESO	European Southern Observatory
1266	ESOL	English for Speakers of Other Languages
1267	ESPN	Entertainment and Sports Programming Network
1268	EST	Eastern Standard Time (UTC−5 hours), Estonia (ISO 3166 trigram)
1269	ESU	Emergency Services Unit
1270	ESV	Engineer Support Vehicle
1271	ET	Ethiopia (ISO 3166 digram)
1272	ETH	Ethiopia (ISO 3166 trigram)
1273	ETI	Extra-Terrestrial Intelligence
1274	ETLA	Extended TLA
1275	ETM	Electronic Technical Manual, Enhanced Thematic Mapper
1276	ETT	Embedded Training Team
1277	EU	European Union
1278	Eu	Europium
1279	EUCOM	(U.S.) European Command
1280	EUUSA	European Union and United States of America
1281	EV	Exavolt
1282	EVA	Earned Value Analysis, Economic value added, Ethylene-Vinyl Acetate, Extra-Vehicular Activity
1283	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1284	EWSD	Elektronisches Wählsystem Digital (German,'Electronic Digital Switching System')
1285	EWTN	Eternal Word Television Network
1286	Exatesla	Extra Terrestrial
1287	EXREP	Expeditious Repair (SM&R code)
1288	EZ	Extraction Zone
1289	f	Femto
1290	fA	Femtoampere
1291	FA	Food Addicts in Recovery Anonymous
1292	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1293	FAAD	Forward Area Air Defence
1294	FAADEZ	Forward Area Air Defence Engagement Zone
1295	FAAFP	Fellow of the American Academy of Family Physicians
1296	FAAN	Fellow of the American Academy of Neurology
1297	FAAN	Fellow of the American Academy of Nursing
1298	FAAQ	Frequently Asked and Anticipated Questions
1299	FAASV	Field Artillery Ammunition Supply Vehicle
1300	FAB	Feline Advisory Bureau (UK feline charity)
1301	FACA	(US) Federal Advisory Committee Act
1302	FACH	Fuerza Aérea de Chile
1303	FACN	Fellow of the American College of Nutrition
1304	FACP	Fellow of the American College of Physicians
1305	FACTS	Flexible Alternating Current Transmission System
1306	FAM	Foreign Affairs Manual
1307	FAO	Food and Agriculture Organization
1308	FAPA	Fellow of the American Psychological Association
1309	FAPHA	Fellow of the American Public Health Association
1310	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1311	FASCAM	Family of Scatterable Mines[1]
1312	FASD	Fetal Alcohol Spectrum Disorder
1313	FASEB	Federation of American Societies for Experimental Biology
1314	FAT	Field Artillery Tractor
1315	FAVS	Future Armoured Vehicle System
1316	FAW	Football Association of Wales
1317	FBCS	Fellow of the British Computer Society
1318	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1319	FBIS	Foreign Broadcast Information Service
1320	FBM	Board foot
1321	fC	Femtocoulomb
1322	FCC	U.S. Federal Communications Commission
1323	FCE	First Certificate in English
1324	FCF	Financial Free Cash Flow
1325	FCLA	Fraud Claims Law Associate
1326	FCO	UK Foreign and Commonwealth Office
1327	FCW	Florida Championship Wrestling
1328	FD	Falun Dafa
1329	FDA	Food and Drug Administration (U.S.)
1330	FDBK	(I) Feedback
1331	Fe	Iron (Latin Ferrum)
1332	FEAST	Forum for European-Australian Science and Technology Cooperation
1333	FEATS	Festival of European Anglophone Theatrical Societies link title
1334	FEBA	Forward Edge of the Battle Area
1335	FED	Field Emission Display
1336	FEDEP	Federation Development Process (Simulation)
1337	FEF	Frontal Eye Field (neurophysiology)
1338	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1339	FENS	Federation of European Neuroscience Societies
1340	FES	Flywheel Energy Storage
1341	FEST	Frankfurt English Speaking Theatre link title
1342	FET	Field-effect transistor
1343	FEZ	Fighter Engagement Zone
1344	fF	Femtofarad
1345	FF	Final Fantasy
1346	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1347	FFC	Free For Chat
1348	FFE	Fukuoka Futures Exchange
1349	FFF	Fédération française de football (French for: French Football Federation)
1350	FFG	Guided Missile Frigate (hull classification symbol)
1351	FFOV	Forward Field Of View
1352	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1353	FFS	For Fuck's Sake
1354	FFT	Final Fantasy Tactics
1355	FG	Falun Gong
1356	fg	Femtogram
1357	FG	Fog (METAR Code)
1358	FGOTUS	First Gentleman of the United States
1359	FGR	Flickr Group Roulette
1360	fH	Femtohenry
1361	FHFIF	Foster's Home for Imaginary Friends
1362	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1363	FI	Finland (ISO 3166 digram)
1364	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1365	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1366	FIBUA	Fighting In Built-Up Areas
1367	FIC	Fellowship for Intentional Community
1368	FID	Foreign Internal Defence
1369	FIE	Fly-In Echelon
1370	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1371	FIFe	Fédération internationale féline (French for: International Feline Federation)
1372	FIFO	First In, First Out
1373	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1374	FIGJAM	Fuck I'm Good, Just Ask Me
1375	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1376	FIN	Finland (ISO 3166 trigram)
1377	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1378	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1379	FIS	Fédération internationale de ski (French for: International Ski Federation)
1380	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1381	FISH	Fluorescence In-Situ Hybridisation
1382	FiST	Fire Support Team
1383	FITS	Flexible Image Transport System
1384	FIU	Florida International University
1385	fJ	Femtojoule
1386	FJ	Fiji (ISO 3166 digram)
1387	FJI	Fiji (ISO 3166 trigram)
1388	FJN	Financial Job Network
1389	FK	Falkland Islands (ISO 3166 digram)
1390	fK	Femtokelvin
1391	FKSM	Fort Knox Supplemental Manual
1392	FKT	Fastest Known Time
1393	fL	Femtolitre
1394	FL	Florida (postal symbol)
1395	fl	floruit (Latin for: living) (genealogy)
1396	FLA	Florida,Front Line Assembly,Future Large Aircraft
1397	FLAB	Four-letter abbreviation
1398	FLAC	Free Legal Advice Centres
1399	FLAC	Free Lossless Audio Codec
1400	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1401	FLB	Forward Logistics Base
1402	FLET	Forward Line of Enemy Troops
1403	FLG	Falun Gong
1404	FLIP	Flight Information Publication
1405	FLIR	Forward Looking InfraRed (sensor)
1406	FLK	Falkland Islands (ISO 3166 trigram)
1407	FLOT	Forward Line of Own Troops
1408	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1409	FLQ	Free Legal Questions
1410	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1411	FLSA	Fair Labor Standards Act
1412	FLTSAT	Fleet Satellite
1413	FLTSATCOM	Fleet Satellite Communication System
1414	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1415	FM	Factory Mutual
1416	FM	Federal Magistrate (Australian post-nominal),Federated States of Micronesia (postal symbol; ISO 3166 digram),Field Manual,Flight Manager,Frequency Modulation (electronics)
1417	fm	Femtometre
1418	Fm	Fermium
1419	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1420	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1421	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1422	FMCG	Fast Moving Consumer Goods
1423	FME	Formal Methods Europe
1424	FMECA	Failure Modes and Effect Criticality Analysis
1425	FMJD	Fédération Mondiale du Jeu de Dames
1426	FMLA	Family Medical Leave Act
1427	FoE	Friends of the Earth
1428	FOGC	Federal Oil and Gas Council
1429	FOH	Front Of House
1430	FOIA	Freedom of Information Act
1431	FOM	Federation Object Model
1432	FONSI	Finding of No Significant Impact
1433	FOO	Forward Observation Officer
1434	FOOP	Friends Of Organ Pipes (Volunteer group)
1435	FoS	Family of Systems
1436	FOSE	Fallout 3 Script Extender
1437	FOSE	Federal Office Systems Expo
1438	FOT	Free on truck
1439	FOTA	Fellow of the Orthodontic Technicians Association
1440	FOTC	Flight of the Conchords
1441	FOUO	For Official Use Only
1442	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1443	FPS	Fire Prevention System
1444	FQ	French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1445	FR	France (ISO 3166 digram)
1446	Fr	Francium
1447	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1448	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1449	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1450	FRICBM	Full Range ICBM
1451	FRO	Faroe Islands (ISO 3166 trigram)
1452	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1453	FRSA	Fellow of the Royal Society of Art
1454	FRY	Federal Republic of Yugoslavia
1455	fs	Femtosecond
1456	fS	Femtosiemens
1457	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1458	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1459	FSCL	Fire Support Co-ordination Line
1460	FSE	Fire Support Element
1461	FSF	Free Software Foundation
1462	FSH	Follicle Stimulating Hormone
1463	FSI	Fuel Stratified Injection
1464	FSS	Fire Support Station
1465	FSSP	Families of Structurally Similar Proteins
1466	FSTC	Foreign Science Technology Center (now NGIC)
1467	fT	Femtotesla
1468	FTC	Federal Trade Commission
1469	FTE	Full Time Equivalent
1470	FTL	Faster Than Light
1471	FTS	Flight Termination System used during some rocket launches
1472	FTS	Fuck That Shit
1473	FU	Smoke (METAR Code)
1474	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1475	fV	Femtovolt
1476	fW	Femtowatt
1477	FW	Forward
1478	FWC	Football World Cup
1479	FWF	Fixed Word Format
1480	FWI	French West Indies
1481	FWIW	For What It's Worth
1482	FWS	U.S. Fish and Wildlife Service
1483	FWT	Fresh Water Tank
1484	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1485	FYA	For Your Agenda
1486	FYDP	Five-Year Defense Plan (U.S.)
1487	FYI	For Your Information
1488	FYROM	Former Yugoslav Republic of Macedonia
1489	FZDZ	Freezing Drizzle (METAR Code)
1490	FZFG	Freezing Fog (METAR Code)
1491	FZRA	Freezing Rain (METAR Code)
1492	g	Gram
1493	G3	Heckler & Koch G3
1494	GAAR	General Anti-Avoidance Rule (tax evasion)
1495	GAB	Gabon (ISO 3166 trigram)
1496	GABA	Gamma-AminoButyric Acid
1497	GAD	Generalized Anxiety Disorder
1498	GAF	Garfield and Friends
1499	GAO	U.S. Government Accountability Office
1500	GAW	Global Atmospheric Watch
1501	GB	United Kingdom of Great Britain and Northern Ireland (ISO 3166 digram) [glamour boy 7-9/10]
1502	GBBC	Great (Global) Backyard Bird Count
1503	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1504	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1505	GCA	Graduate in Claims Administration
1506	GCD	see entry
1507	GCF	Greatest Common Factor
1508	GCI	Ground-controlled interception
1509	GCN	Gamma-ray burst Coordination Network
1510	GCS	Global Coordinate System
1511	GCSE	General Certificate of Secondary Education (UK)
1512	Gd	Gadolinium
1513	GD	Grenada (ISO 3166 digram)
1514	GDL	Game Definition Language
1515	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1516	GDR	German Democratic Republic (cf. DDR)
1517	GDW	Game Designers Workshop
1518	Ge	Germanium
1519	GEBCO	General Bathymetric Chart of the Oceans
1520	GEC	Great Engineering Challenge
1521	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1522	GEEP	Geophysical Equipment Exploration Platform
1523	GEN	Full General (four stars) in the U.S. Army
1524	GeV	Gigaelectron-volt
1525	GEV	Ground Effect Vehicle
1526	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1527	GFI	Ground Fault Interruptor (aka GFCI)
1528	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1529	GFN	Global Footprint Network
1530	GFY	'good for you' or 'go fuck yourself', depending on the context (Internet chat)
1531	GGK	Good God Karma
1532	GHA	Ghana (ISO 3166 trigram)
1533	GHB	gamma-Hydroxybutyric acid
1534	Gi	Gibi
1535	GIB	Gibraltar (ISO 3166 trigram)
1536	GIG	Global Information Grid
1537	GINO	Godzilla In Name Only
1538	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1539	GJ	Gigajoule,Gujarat (Indian state code)
1540	GJD	Geocentric Julian Day
1541	GK	Gigakelvin
1542	GLAAD	Gay and Lesbian Alliance Against Defamation
1543	GLAC	General Ledger Accounting Code
1544	GLAST	Gamma-ray Large Area Space Telescope
1545	GLBA	Gramm-Leach-Bliley Act
1546	GLC	Gas-liquid chromatography
1547	GLP	Guadeloupe (ISO 3166 trigram)
1548	GLV	Gained Life Value
1549	Gm	Gigametre
1550	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Guru Meditation (computing)
1551	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
1552	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1553	GMFSC	Ground Mobile Forces Satellite Communications
1554	GMO	Genetically Modified Organism
1555	GMPCS	Global Mobile Personal Communications by Satellite
1556	GNAS	Grand National Archery Society
1557	GNB	Guinea-Bissau (ISO 3166 trigram)
1558	GNP	Gross National Product
1559	GNQ	Equatorial Guinea (ISO 3166 trigram)
1560	GnRH	Gonadotropin-Releasing Hormone
1561	GOA	General of the Army (United States only)
1562	GOAT	Greatest Of All Time
1563	GOC	General Officer Commanding
1564	GOES	Geostationary Operational Environmental Satellite
1565	GOP	Grand Old Party
1566	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1567	GOSC	General Officer Steering Committee
1568	GOSH	Great Ormond Street Hospital
1569	GOSP	Gas/Oil Separation Plant
1570	GOTS	Government off-the-shelf
1571	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1572	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram)
1573	GPA	Grade Point Average
1574	GPC	Global Path Cache
1575	GPIB	General-Purpose Instrumentation/Interface Bus
1576	GPO	General Post Office
1577	GPPC	Genetics and Public Policy Center
1578	GPR	Ground-Penetrating Radar
1579	GPS	General Problem Solver,Global Positioning System
1580	GPT	General Purpose Technology, Get paid to surf (an online business model)
1581	GQ	Equatorial Guinea (ISO 3166 digram),Gentlemen's Quarterly (the original name of the magazine now known simply as GQ),GR[edit]
1582	GR	Greece (ISO 3166 digram),Hail (METAR Code)
1583	GRAIL	Gravity Recovery and Interior Laboratory
1584	GRAS	Generally recognized as safe (FDA list)
1585	GRB	Gamma-Ray Burst
1586	GRC	Greece (ISO 3166 trigram)
1587	GRD	Grenada (ISO 3166 trigram)
1588	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1589	grep	[search] Globally for Regular Expression,Print [lines]
1590	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1591	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1592	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1593	GRL	Greenland (ISO 3166 trigram)
1594	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1595	Gs	Gigasecond
1596	GSA	U.S. General Services Administration
1597	GSD	Graphical Situation Display
1598	GSGB	(God send glamour boy 9-10/10)
1599	GSK	GlaxoSmithKline [good sexual karma]
1600	GSN	Game Show Network
1601	GSO	General Services Officer (U.S. Department of State)
1602	GSOH	Good Sense Of Humour
1603	GSP	Georges St-Pierre (Canadian MMA fighter)
1604	GSR	Gun Shot Residue
1605	GSS	Generic Security Services
1606	GSW	Gunshot wound
1607	GTD	Getting Things Done
1608	GTG	Got To Go (Internet chat)
1609	GTGN	Getty Thesaurus of Geographic Names
1610	GTK	Good To Know (Internet chat)
1611	GTM	Guatemala (ISO 3166 trigram)
1612	GU	Guam (postal symbol; ISO 3166 digram)
1613	GUF	French Guiana (ISO 3166 trigram)
1614	GUILT	Gangliated Utrophin Immuno Latency Toxin
1615	GULCR	Grupo de Usuarios de Linux de Costa Rica
1616	GUT	Grand Unification Theory
1617	GV	Gigavolt
1618	GWARS	Ground Warfare System (simulation)
1619	GWAS	Grand Western Archery Society
1620	GWOT	Global War on Terrorism
1621	GXE	Gene-enivronment interaction
1622	GXM	Matrox Graphics eXpansion Module
1623	GY	Guyana (ISO 3166 digram)
1624	GZ	Ground Zero
1625	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1626	h	Hecto
1627	H	Henry
1628	H1	First half of the year
1629	H2	Second half of the year
1630	HA	High Availability
1631	HAARP	High Frequency Active Auroral Research Program
1632	HAART	Highly Active Anti-Retroviral Therapy
1633	HAI	Human Awareness Institute
1634	HAL	Hardware Abstraction Layer
1635	HALO	High Altitude Low Opening (parachute jump)
1636	HAM	Amateur radio operator
1637	HANS	Head And Neck Support (device used in many race cars)
1638	HARM	High-speed Anti-Radiation Missile
1639	HAW	Heavy Antitank Weapon
1640	HAWK	Homing All the Way Killer (air defence system)
1641	HAZ	Heat-Affected Zone
1642	HAZMAT	Hazardous Materials
1643	HBCD	HexaBromoCycloDodecane
1644	HBO	Home Box Office
1645	HBR	Harvard Business Review
1646	HBT	Heterojunction Bipolar Transistor
1647	HBV	Hepatitis B Virus
1648	HCCI	Homogeneous Charge Compression Ignition
1649	HCF	Highest Common Factor
1650	HCSC	Higher Command and Staff Course
1651	HDL	High-Density Lipoprotein
1652	HDM	Human Decision-Making
1653	HDRA	Henry Doubleday Research Association
1654	He	Helium
1655	HE	High Explosive
1656	HEAT	High Explosive Anti-Tank (ammunition)
1657	HEBA	Hellenic Basketball Clubs Association
1658	HEER	High-Explosive Extended Range (ammunition)
1659	HEIC	Honourable East India Company
1660	HEMP	High-Altitude Electromagnetic Pulse
1661	HEOSS	High Earth Orbit Space Surveillance
1662	HEP	High-Explosive Plastic (ammunition)
1663	HEPA	High-Efficiency Particulate Air (filter)
1664	HESV	Heavy Engineering Support Vehicle
1665	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1666	HEU	Highly Enriched Uranium
1667	Hf	Hafnium
1668	HF	High Frequency
1669	HFE	Human Fertilisation and Embryology (UK Act)
1670	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1671	HFEA	Human Fertilisation and Embryology Authority (UK)
1672	Hg	Mercury (Latin Hydrargyrum)
1673	HGC	UK Human Genetics Commission
1674	HGF	Human Growth Factor
1675	HGTV	Home & Garden Television
1676	HI	Hawaii (postal symbol)
1677	HIH	His (or Her) Imperial Highness
1678	HIM	His (or Her) Imperial Majesty
1679	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1680	HIMEZ	High Altitude Missile Engagement Zone
1681	HIMYM	How I Met Your Mother
1682	HIPAA	U.S. Health Insurance Portability and Accountability Act
1683	Hipparcos	HIgh Precision Parallax COllecting Satellite
1684	Hird	Hurd of interfaces representing depth (cf. HURD)
1685	HiRISE	High Resolution Imaging Science Experiment
1686	HIT	Health Information Technology
1687	HIV	Human Immunodeficiency Virus
1688	HIWT	Hobart Institute of Welding Technology
1689	HJD	Heliocentric Julian Day
1690	HK	Hong Kong (ISO 3166 digram)
1691	HKG	Hong Kong (ISO 3166 trigram)
1692	HKS	HyperKinetic Syndrome
1693	hL	Hectolitre
1694	HL	Holding Line
1695	HLL	High-Level Language
1696	HLN	Headline News
1697	HLOS	High Level Output Specification
1698	HM	Heard Island and McDonald Islands (ISO 3166 digram)
1699	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1700	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1701	HMF	HydroxyMethyl Furfural
1702	HMO	Health maintenance organization
1703	HMP	Her Majesty's Prison
1704	HMRC	Her/His Majesty's Revenue and Customs
1705	HMSO	Her Majesty's Stationery Office
1706	HMV	His Master's Voice
1707	HN	Honduras (ISO 3166 digram)
1708	HND	Honduras (ISO 3166 trigram)
1709	Ho	Holmium
1710	HOLLAND	Hope Our Love Lasts And Never Dies
1711	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1712	HOT	Highly Optimised Tolerance
1713	HOTAS	Hands on throttle-and-stick
1714	HOV	High Occupancy Vehicle
1715	hp	horse power
1716	HPA	UK Health Protection Agency
1717	HPCL	Hindustan Petroleum Corporation Limited
1718	HPLC	High Performance Liquid Chromatography
1719	HPT	High[er] Payoff Target
1720	HPV	Human Papilloma Virus
1721	HQ	HeadQuarters
1722	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1723	HRD	Human Resource Development
1724	HRF	High iness Forces
1725	HRH	His (or Her) Royal Highness
1726	HRM	His (or Her) Royal Majesty
1727	HRM	Human Resource Management
1728	HRT	Hormone Replacement Therapy
1729	Hs	Hassium
1730	HSBC	The Hong Kong and Shanghai Banking Corporation
1731	HSC	Higher School Certificate
1732	HSM	High School Musical
1733	HSMAD	Human Science/Modeling and Analysis Data
1734	HSN	Home Shopping Network
1735	HSPH	Harvard School of Public Health
1736	HSSI	High-Speed Serial Interface
1737	HST	see entry
1738	HTA	HyperText Application
1739	HTFU	Harden The Fuck Up
1740	HTH	Hope That Helps
1741	HTI	Haiti (ISO 3166 trigram)
1742	HTR	Heated Towel Rail
1743	HTS	High-Temperature Superconducting wire
1744	HTTP	HyperText Transfer Protocol
1745	HU	Hungary (ISO 3166 digram)
1746	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1747	HUN	Hungary (ISO 3166 trigram)
1748	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1749	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1750	HVAP	High Velocity Armour Piercing (ammunition)
1751	HVHF	High velocity human factors
1752	HVM	High Velocity Missile
1753	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1754	HWM	Hardware morphing (computer graphics rendering)
1755	HXB	The glycoprotein Tenascian C
1756	HZ	Haze (METAR Code)
1757	Hz	Hertz
1758	IA	Iowa (postal symbol)
1759	IAAL	I Am A Lawyer
1760	IAB	International Association for Biologicals
1761	IAD	Ion Assisted Deposition
1762	IADS	Integrated Air Defence System
1763	IAEA	International Atomic Energy Agency
1764	IAF	{i} Industrial Areas Foundation
1765	IAFG	Information Assurance Focus Group
1766	IANA	Internet Assigned Numbers Authority
1767	IANAL	I Am Not A Lawyer
1768	IAS	Image Assessment System
1769	IASIP	It's Always Sunny in Philadelphia
1770	IATA	International Air Transport Association
1771	IATF	International Automotive Task Force
1772	IATSE	International Alliance of Theatrical Stage Employees
1773	IAUC	International Astronomical Union Circular
1774	IAW	In Accordance With
1775	IB	International Baccalaureate
1776	IBA	Important Bird Area
1777	IBD	Inflammatory Bowel Disease
1778	IBDM	Information Based Decision Making
1779	IBM	International Business Machines
1780	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1781	IBS	Irritable Bowel Syndrome
1782	IC	Ice Crystals (METAR Code),Integrated Circuit,[inner circle]
1783	ICANN	Internet Corporation for Assigned Names and Numbers
1784	ICAO	International Civil Aviation Organization
1785	ICBM	Intercontinental Ballistic Missile
1786	ICBN	International Code of Botanical Nomenclature
1787	ICE	In case of emergency, Immigration and Customs Enforcement
1788	ICES	International Council for the Exploration of the Sea
1789	ICF	Intelligent Community Forum
1790	ICMP	Internet Control Message Protocol
1791	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1792	ICO	Intermediate Circular Orbit
1793	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1794	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1795	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1796	ICRL	Individual Component Repair List
1797	ICRS	International Celestial Reference System
1798	ICSI	Intracytoplasmic Sperm Injection
1799	ICT	Information and communication technologies
1800	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1801	ICV	Infantry Carrier Vehicle
1802	ICYMI	In Case You Missed It
1803	ID	Idaho (postal symbol),Identity,Indonesia (ISO 3166 digram),Infantry Division,Intelligent Design,ID10T Error,Idiot User Error (IT help desk inside joke)
1804	IDC	International Data Corporation
1805	IDDI	I don't do initialisms (see irony)
1806	IDGAF	I don't give a fuck
1807	IDK	I don't know
1808	IDL	Interface Definition Language
1809	IDN	Indonesia (ISO 3166 trigram)
1810	IEA	International Energy Agency
1811	IEC	International Electrotechnical Commission
1812	IED	Improvised Explosive Device
1813	IELTS	International English Language Testing System
1814	IER	Information Exchange Requirement
1815	IET	Initial Entry Training
1816	IET	Institution of Engineering and Technology
1817	IETF	Internet Engineering Task Force
1818	IEW	Intelligence and Electronic Warfare
1819	IFAB	International Football Association Board
1820	IFAH	International Federation for Animal Health
1821	IFAP	International Federation of Agricultural Producers
1822	IFO	Identified Flying Object (see also UFO)
1823	IFOV	Instantaneous Field of View
1824	IFPI	International Federation of Phonographic Industries
1825	IFRB	International Frequency Registration Board
1826	IFV	Infantry Fighting Vehicle
1827	IG	Inspector General
1828	IGNOU	Indira Gandhi National Open University
1829	IGS	International Ground Station
1830	IHH	Idiopathic Hypogonadotropic Hypogonadism
1831	IHO	International Hydrographic Organization
1832	IHR	Institute for Historical Review
1833	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1834	II	Two (in Roman numerals)
1835	IICA	Inter-American Institute for Cooperation on Agriculture
1836	IIE	Innovative Interstellar Explorer
1837	III	Three (in Roman numerals)
1838	IIRC	If I Recall/Remember Correctly
1839	IISS	International Institute for Strategic Studies
1840	IJN	Imperial Japanese Navy (World War II)
1841	IJWP	Interim Joint Warfare Publication
1842	ILDS	Improved Landmine Detection System
1843	ILO	International Labour Organization
1844	ILRI	International Livestock Research Institute
1845	ILY	I Love You [pronounced ILL-LEE]
1846	IM	Instant Message (internet speech)
1847	IMBD	International Migratory Bird Day
1848	IMDb	Internet Movie Database
1849	IME	In My Experience
1850	IMHO	In My Humble/Honest Opinion
1851	IML	International Mister Leather
1852	IMNSHO	In My Not So Humble Opinion
1853	IMPAC	International Merchant Purchase Authorization Card
1854	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1855	IMPATT	IMPact Avalanche Transit Time diode
1856	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1857	IMRL	Individual Material iness List
1858	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1859	IMsL	International Ms. Leather
1860	IMT	Integrated Management Tool
1861	IMU	International Mathematical Union
1862	IN	India (ISO 3166 digram),Indiana (postal symbol),Infantry
1863	In	Indium
1864	INA	Immigration and Nationality Act
1865	INAS	International Near-Earth Asteroid Survey
1866	INCITS	InterNational Committee for Information Technology Standards
1867	IND	India (ISO 3166 trigram)
1868	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1869	inet	the Internet
1870	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1871	INFOSEC	Information Security
1872	INLA	Irish National Liberation Army
1873	INMARSAT	International Maritime Satellite organization
1874	INRIA	Institut national de recherche en informatique et en automatique
1875	INS	Immigration and Naturalization Service
1876	InSAR	Interferometric synthetic aperture radar
1877	INST	Information Standards and Technology
1878	INTERFET	International Force for East Timor
1879	INTSUM	Intelligence Summary
1880	IO	British Indian Ocean Territory (ISO 3166 digram)
1881	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1882	IPB	Intelligence Preparation of the Battlefield
1883	IPL	Inferior Parietal Lobule
1884	IPO	Initial Public Offering
1885	IPT	Integrated Product/Project Team
1886	IPTS	Institute for Prospective Technological Studies
1887	IPTV	Internet Protocol TeleVision
1888	IPW	Interrogation of Prisoners of War
1889	Ir	Iridium
1890	IRAD	Internal Research and Development
1891	IRAN	(I) Inspect and Repair As Necessary
1892	IRAS	Infrared Astronomical Satellite
1893	IRB	International Rugby Board
1894	IRBM	Intermediate Range Ballistic Missile
1895	IREA	Intermountain Rural Electric Association
1896	IRINN	Islamic Republic of Iran News Network
1897	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1898	IRN	Iran (ISO 3166 trigram)
1899	IRO	International Refugee Organisation
1900	IRQ	Iraq (ISO 3166 trigram)
1901	IRS	U.S. Internal Revenue Service
1902	IRST	Infra-red Search and Track
1903	IS	Iceland (ISO 3166 digram)
1904	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1905	ISAR	Inverse SAR (Synthetic Aperture Radar)
1906	ISB	Intermediate Staging Base
1907	ISBN	International Standard Book Number (ISO 2108)
1908	ISCCP	International Satellite Cloud Climatology Project
1909	ISCII	Indian Standard Code for Information Interchange
1910	ISDN	Integrated Services Digital Network
1911	ISEF	Intel International Science and Engineering Fair
1912	ISEN	Internet Search Environment Number
1913	ISF	Internal Security Force
1914	ISIL	Islamic State of Iraq and the Levant
1915	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1916	ISL	Iceland (ISO 3166 trigram)
1917	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1918	ISMB	International Society of Matrix Biologists
1919	ISMC	Intelligent Sounding Meaningless Conversation
1920	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1921	ISPE	International Society for Pharmacoepidemiology
1922	ISRO	Indian Space Research Organisation
1923	ISSCR	International Society for Stem Cell Research
1924	ISSN	International standard serial number (ISO 3297)
1925	ISTC	Institute of Scientific and Technical Communications (UK)
1926	ISTS	Intel Science Talent Search
1927	ITA	Italy (ISO 3166 trigram)
1928	ITAG	Inertial Terrain-Aided Guidance
1929	ITALY	I'll Truly Always Love You
1930	ITAS	Improved Target Acquisition Sight
1931	ITC	InferoTemporal Cortex (neurophysiology)
1932	ITCZ	Intertropical Convergence Zone
1933	ITEC	Information Technology Exposition & Conference
1934	ITEMS	Interactive Tactical Environment Management System
1935	ITER	International Thermonuclear Experimental Reactor
1936	ITF	International Tennis Federation
1937	ITK	In The Know
1938	ITN	Independent Television News (British)
1939	ITT	International Telephone and Telegraph (U.S.)
1940	ITTO	International Tropical Timber Organization
1941	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1942	IV	Four (in Roman numerals),IntraVenous (as in intravenous drip or intravenous therapy)
1943	Iveco	Industrial Vehicles Corporation
1944	IVF	In Vitro Fertilisation
1945	IVI	Interchangeable Virtual Instrument
1946	IVIS	Inter-Vehicle Information System
1947	IVL	Inter-Visibility Line
1948	IVM	In Vitro [Oocyte] Maturation
1949	IVO	In Vicinity Of
1950	IW	Information Warfare
1951	IWARS	Infantry Warrior Simulation
1952	IWC	International Whaling Commission
1953	IWW	Industrial Workers of the World
1954	IX	Nine (in Roman numerals)
1955	IXT	IntraText digital library; IntraText lexical hypertext
1956	J	Joule
1957	J1	Joint [Manpower &] Personnel Directorate
1958	J2	Joint Intelligence Directorate
1959	J3	Joint Operations Directorate
1960	J4	Joint Logistics Directorate
1961	J5	Joint Strategic Plans & Policy Directorate
1962	J7	Joint Operational Plans & Interoperability Directorate
1963	JAFT	Just A Field Test
1964	JAL	Japan Airlines
1965	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1966	JAM	Jamaica (ISO 3166 trigram)
1967	JAMA	Journal of the American Medical Association
1968	JANET	Joint Academic Network
1969	JATO	Jet-Assisted Take-Off
1970	JB	Jail Bait
1971	JB	Junior Branch
1972	JBFSA	Joint Blue Force Situational Awareness
1973	JCDB	Joint Common Data Base
1974	JCDS	Joint Chiefs of the Defence Staff
1975	JCIDS	Joint Capabilities Integration and Development System
1976	JCL	Job Control Language
1977	JCP	Java Community Process
1978	JCS	Joint Chiefs of Staff
1979	JCW	Juggalo Championship Wrestling
1980	JDBC	Java Data Base Connectivity
1981	JDEM	Joint Dark Energy Mission
1982	JDL	Jewish Defense League
1983	JEFX	Joint Expeditionary Force eXperiment
1984	JET	Joint European Torus
1985	JEZ	Joint Engagement Zone
1986	JFACC	Joint Force Air Component Commander
1987	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1988	JFC	Joint Force Commander
1989	JFK	John Fitzgerald Kennedy or the airport named after him.
1990	JFLCC	Joint Force Land Component Commander
1991	JFMCC	Joint Force Maritime Component Commander
1992	JFO	Journal of Field Ornithology
1993	JFSOCC	Joint Force Special Operations Component Commander
1994	JFTX	Joint Field Training Exercise
1995	JH	Japan Highway Public Corporation
1996	JH	Jharkhand (Indian state code)
1997	JI	Joint Implementation
1998	JIB	Joint Information Bureau
1999	JIC	Joint Intelligence Centre
2000	JINI	Java Intelligent Network Infrastructure
2001	JITC	Joint Interoperability Test Command
2002	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
2003	JJAP	Japanese Journal of Applied Physics
2004	JL	Japan Airlines (IATA airline designator)
2005	JLA	Justice League of America
2006	JM	Jamaica (ISO 3166 digram)
2007	JMS	Java Message Service
2008	JO	Jordan (ISO 3166 digram)
2009	JOA	Joint Operations Area
2010	JOPES	Joint Operations Planning and Execution System
2011	JOR	Jordan (ISO 3166 trigram)
2012	JOTS	Joint Operations Tactical System
2013	JPL	Jet Propulsion Laboratory
2014	JPN	Japan (ISO 3166 trigram)
2015	JPOW	Joint Project Optic Windmill
2016	JRDF	Joint Rapid Deployment Forces
2017	JRE	Java Runtime Environment
2018	JREF	James Randi Educational Foundation
2019	JROC	Joint Requirements Oversight Council
2020	JROCM	JROC Memorandum
2021	JRRF	Joint Rapid Reaction Force
2022	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
2023	JSAP	Japan Society of Applied Physics
2024	JSCSC	Joint Services Command and Staff College
2025	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
2026	JSF	Joint Strike Fighter
2027	JSIMS	Joint Simulation System
2028	JSOA	Joint Special Operations Area
2029	JSOTF	Joint Special Operations Task Force
2030	JSP	JavaServer Page
2031	JSP	Joint Services Publication
2032	JSR	Java Specification Request
2033	JSS	Joint Support Ship Project
2034	JTC	Joint Training Confederation
2035	JTF	Joint Task Force
2036	JTFEX	Joint Task Force Exercise
2037	JTLS	Joint Theater Level Simulation
2038	JTMD	Joint Theatre Missile Defence
2039	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
2040	JUGFET	JUnction Gate Field-Effect Transistor
2041	JUICE	JUpiter ICy Moon Explorer
2042	JUO	Joint Urban Operations
2043	JV	Joint Venture,Junior Varsity
2044	JW	Jehovah's Witnesses
2045	JWARS	Joint Warfare System (simulation)
2046	JWP	Joint Warfare Publication
2047	JY	Japanese Yen
2048	JZ	Joint Zone
2049	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
2050	k	Kilo-
2051	K	picokelvin
2052	K9	Canine Police Unit
2053	Ka	Kamov Design Bureau
2054	kA	Kiloampere
2055	KA	Knowledge Acquisition,Karnataka (Indian state code)
2056	KAF	Kandahar Air Field
2057	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
2058	KARNAC	Knowledge Aided Retrieval in Activity Context
2059	KARR	Knight Automated Roving Robot (Knight Rider character)
2060	KATUSA	Korean Augmentation To United States Army
2061	KAZ	Kazakhstan (ISO 3166 trigram)
2062	KBE	Knight Commander of the Order of the British Empire
2063	KBO	Kuiper Belt Object
2064	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2065	kC	Kilocoulomb
2066	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
2067	KCL	King's College London
2068	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
2069	KCS	Kansas City Southern Railway (AAR reporting mark)
2070	KD	Kawasaki Disease,Kraft Dinner
2071	KE	Kenya (ISO 3166 digram),Kinetic Energy,Knowledge Engineering
2072	KEDO	Korean Peninsula Energy Development Organization
2073	KEN	Kenya (ISO 3166 trigram)
2074	KERA	Kentucky Education Reform Act (of 1990)
2075	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
2076	KESR	Kent and East Sussex Railway.
2077	KET	Kentucky Educational Television,Key English Test
2078	kF	Kilofarad
2079	KFC	Kentucky Fried Chicken
2080	KFOR	UN Kosovo Force
2081	KFUPM	King Fahd University of Petroleum & Minerals
2082	KG	Kyrgyzstan (ISO 3166 digram)
2083	KGO	Knight of the Guelphic Order of Hanover
2084	KGZ	Kyrgyzstan (ISO 3166 trigram)
2085	KH	Cambodia (ISO 3166 digram)
2086	kH	Kilohenry
2087	KHL	Kontinental Hockey League
2088	KHM	Cambodia (ISO 3166 trigram)
2089	KHz	Kilohertz
2090	Ki	Kibi
2091	KI	Kiribati (ISO 3166 digram)
2092	KIA	Killed In Action
2093	KIDS	Knowledge-based Integrated Design System
2094	KIR	Kiribati (ISO 3166 trigram)
2095	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
2096	KIT	Keep In Touch
2097	KITECH	Korean Institute of Industrial Technology
2098	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
2099	kJ	Kilojoule
2100	kK	Kilokelvin
2101	KKK	Ku Klux Klan
2102	kL	Kilolitre
2103	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2104	KLOC	Kilo Lines Of Code
2105	KM	Comoros,Knowledge Management
2106	kN	Kilonewton
2107	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
2108	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2109	KO	Knocked Out
2110	KOR	Republic of Korea (ISO 3166 trigram)
2111	KP	Kim Possible
2112	KPMG	Klynveld,Peat,Marwick,Goerdeler
2113	KPNO	Kitt Peak National Observatory
2114	KQ	Kenya Airways (IATA airline designator)
2115	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
2116	Kr	Krypton
2117	KS	Kansas (postal symbol)
2118	kS	Kilosiemens
2119	KSC	Kennedy Space Center
2120	KSI	Killed or Seriously Injured
2121	KSU	Kansas State University
2122	KT	Knight of the Order of the Thistle, Knights Templar
2123	kT	Kilotesla
2124	KTS	Knight of the Tower and Sword (of Portugal)
2125	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
2126	kV	Kilovolt
2127	KV	Kosovo
2128	kW	Kilowatt
2129	KW	Kuwait (ISO 3166 digram)
2130	KWB	Kids' WB!
2131	KWT	Kuwait (ISO 3166 trigram)
2132	KX	Cayman Airways (IATA airline designator)
2133	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2134	KZ	Kazakhstan (ISO 3166 digram)
2135	KZN	KwaZulu-Natal
2136	La	Lanthanum
2137	LA	Laos (ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2138	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2139	LAB	Logistics Assault Base
2140	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2141	LACMA	Los Angeles County Museum of Art
2142	LAD	Laser Aiming Device
2143	LADW	Local Air Defence Warning
2144	LAESI	Local Authority & Emergency Service Information
2145	LANL	Los Alamos National Laboratory
2146	LAO	Laos (ISO 3166 trigram)
2147	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2148	LARC	Livermore Advanced Research Computer (cf. LLNL)
2149	LARP	Live-Action Role-Playing
2150	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2151	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2152	LATA	Local Access Transport Area
2153	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2154	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2155	LAW	Light Antitank Weapon
2156	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2157	LB	Lebanon (ISO 3166 digram)
2158	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2159	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2160	LBN	Lebanon (ISO 3166 trigram)
2161	LBNL	Lawrence Berkeley National Laboratory
2162	LBR	Liberia (ISO 3166 trigram)
2163	LBS	Location-Based Services
2164	LBT	Large Binocular Telescope
2165	LBW	Leg Before Wicket
2166	LBY	Libya (ISO 3166 trigram)
2167	LCA	Saint Lucia (ISO 3166 trigram)
2168	LCC	Land Component Commander
2169	LCCP	Light Contingency Communications Package
2170	LCD	Liquid Crystal Display
2171	LCM	Least/Lowest Common Multiple
2172	LCS	League of Legends Championship Series
2173	LDA	Lateral Drift Apparatus (paratroops)
2174	LDC	Lesser Developing/Developed Country
2175	LDL	Low-Density Lipoprotein
2176	LDV	Local Defence Volunteers (British Home Guard)
2177	LDW	Lane Departure Warning (ADAS)
2178	LEC	Local Exchange Carrier
2179	LED	Light-Emitting Diode
2180	LEGAD	Legal Advice
2181	Legs	level emotion gad speed
2182	LEMOSS	Long-Endurance MObile Submarine Simulator
2183	LEN	Large Extension Node
2184	LEP	Large Electron-Positron collider
2185	LER	Loss-Exchange Ratio
2186	LEU	Low-Enriched Uranium
2187	LF	Low Frequency
2188	LFO	Low Frequency Oscillation / Oscillator
2189	LFTR	Liquid fluoride thorium reactor
2190	LGB	Lesbian,Gay,Bisexual
2191	LGBT	Lesbian,Gay,Bisexual,Transgender
2192	LGBTQ	Lesbian,Gay,Bisexual,Transgender,Queer
2193	LGLO	Love God,Love Others
2194	LGM	Little Green Men
2195	LGS	Landsat Ground Station
2196	LH	Luteinising Hormone
2197	LHC	Large Hadron Collider
2198	LHS	Left Hand Side
2199	LI	Fifty-one (in Roman numerals),Liechtenstein (ISO 3166 digram)
2200	Li	Lithium
2201	LIBOR	London Interbank Offered Rate
2202	LIBS	Laser Induced Breakdown Spectroscopy
2203	LIE	Liechtenstein (ISO 3166 trigram)
2204	LIGO	Laser Interferometer Gravitational-Wave Observatory
2205	LINEAR	Lincoln Near-Earth Asteroid Research
2206	LISA	Laser Interferometer Space Antenna
2207	LIVE	Liquid Inertial Vibration Eliminator
2208	LJJ	Lord Justices of Appeal
2209	LK	Sri Lanka (ISO 3166 digram)
2210	LKA	Sri Lanka (ISO 3166 trigram)
2211	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2212	LLAD	Low Level Air Defence
2213	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2214	LLC	Limited Liability Company
2215	LLLTV	Low-Light Level Television
2216	LLNL	Lawrence Livermore National Laboratory
2217	LLP	Limited Liability Partnership
2218	LLTR	Low-Level Transit Route
2219	LMAO	Laughing My Ass Off (Internet shorthand)
2220	LMB	Lick My Balls
2221	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2222	LMN	Lifetime Movie Network
2223	LMS	Like My Status (Internet shorthand)
2224	LMV	() Light Motor Vehicle
2225	LNER	London and North Eastern Railway
2226	LNG	Liquefied Natural Gas
2227	LNO	Liaison Officer
2228	LNR	Ligue Nationale de Rugby (French for: 'National Rugby League')
2229	LOA	Limit Of Advance
2230	LOC	Level of Operational Capability, Limited Operational Capability
2231	LOD	Limit of Detection,see Detection limit
2232	LoD	Lines of Development (UK)
2233	LOE	Level of Effort
2234	LOFAR	Low Frequency Analysis and Recording
2235	LOGPAC	Logistics Package
2236	LOL	Laughing Out Loud (Internet shorthand)
2237	LOMEZ	Low Altitude Missile Engagement Zone
2238	LONEOS	Lowell Observatory Near-Earth-Object Search
2239	LOOGY	Lefty One-Out GuY,a sometimes pejorative nickname for the left-handed specialist in baseball
2240	LORTID	LOng Range Target IDentification
2241	LOS	Line Of Sight
2242	LOSAT	Line-Of-Sight Anti-Tank (missile)
2243	LOTA	Licentiate of the Orthodontic Technicians Association
2244	LOTIS	Livermore Optical Transient Imaging System
2245	LOTS	Logistics Over-The-Shore
2246	LP	Linkin Park,Linkup Point,Listening Post,Long Playing record,Louisiana Pacific (cf. LP Field)
2247	LPC	Linear Predictive Coding
2248	LPD	Landing Platform Dock (Navy hull classification),Low Probability of Detection
2249	LPG	Liquefied Petroleum Gas (cf. LNG)
2250	LPI	Low Probability of Intercept
2251	LPS	Landsat Processing System,LipoPolySaccharide
2252	Lr	Lawrencium
2253	LR	Liberia (ISO 3166 digram)
2254	LRC	Logistics iness Center
2255	LRGW	Long-Range Guided Weapon
2256	LRICBM	Limited Range ICBM
2257	LRIP	Low Rate Initial Production
2258	LRP	Logistics Release Point
2259	LRPE	Long-Range Planning Element
2260	LRS	Long Range Surveillance
2261	LRU	Line-Replaceable Unit
2262	LSAT	Law School Admission Test (often pronounced as 'el-SAT')
2263	LSI	Large-Scale Integration
2264	LSIF	Labour Sponsored Investment Fund
2265	LSND	Liquid Scintillator Neutrino Detector
2266	LSO	Lesotho (ISO 3166 trigram)
2267	LSST	Large Synoptic Survey Telescope
2268	LST	Landing Ship,Tank (World War II; also known,not entirely affectionately,as 'Large Slow Target')
2269	LSVW	Light Support Vehicle,Wheeled
2270	LT	Lithuania (ISO 3166 digram)
2271	Lt	Lieutenant
2272	LtC	Lieutenant-Colonel (U.S.)
2273	LTC	Long-Term Costing
2274	Ltd	Limited
2275	LTDP	Long-Term Defence Plan
2276	LTG	Lieutenant General,Lightning (METAR Code)
2277	LTI	Linear Time-Invariant
2278	LTM	Acronym for Laughing To Myself
2279	LTP	Long-Term Potentiation
2280	LTU	Lithuania (ISO 3166 trigram)
2281	LU	Acronym Love You
2282	LU	Loonatics Unleashed
2283	Lu	Lutetium
2284	LUCA	Last Universal Common Ancestor
2285	LUG	Linux User Group
2286	LULU	Locally Unwanted Land Use (urbanism)
2287	LUT	Limited User Test (ing),Local User Terminal
2288	LUVW	Light Utility Vehicle,Wheeled
2289	LUX	Luxembourg (ISO 3166 trigram)
2290	LV	Las Vegas,Latvia (ISO 3166 digram),Launch Vehicle,Leading Vehicle,Leave,Left Ventricle,Level Valve,Linking Verb,Liverpool Victoria
2291	LVA	Latvia (ISO 3166 trigram)
2292	LVAD	Left Ventricular Assist Device,Low-Velocity Airdrop
2293	LVEF	Left Ventricular Ejection Fraction
2294	LW	Land Warrior,Low Water (nautical charts)
2295	Lw	Lawrencium (obsolete 1963)
2296	LWR	Laser warning receiver
2297	LWRC	Land Warfare Resources Corporation
2298	LWS	Land Warrior System
2299	LX	Electrics (theatrical term)
2300	LX	Luxembourg (amateur radio ITU prefix),Swiss International Air Lines (IATA code)
2301	LY	Libya (ISO 3166 digram),Lithuania (amateur radio ITU prefix)
2302	LYAO	Laugh Your Ass Off
2303	LYLAS	Love You Like A Sister
2304	LZ	Bulgaria (amateur radio ITU prefix),Landing Zone
2305	M	Mega-,One thousand (in Roman numerals)
2306	m	Metre,Milli
2307	MA	Marijuana Anonymous,Master of Arts,Massachusetts (postal symbol),Megaampere,Morocco (ISO 3166 digram)
2308	Ma	Megaannum
2309	mA	Milliampere
2310	MAA	Mathematical Association of America
2311	MAAC	Metro Atlantic Athletic Conference
2312	MACE	Multi-Agent Computing Environment
2313	MACHO	MAssive Compact Halo Object
2314	MADD	Mothers Against Drunk Driving,MyoAdenylate Deaminase Deficiency,Multiply-Add
2315	MAF	Maintenance Action Form
2316	MAGA	Make America Great Again
2317	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2318	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2319	MAGTF	Marine Air-Ground Task Force
2320	Mahasz	Magyar Hanglemezkiadók Szövetsége (Hungarian for: 'Association of Hungarian Record Companies')
2321	MALD	Miniature Air-Launched Decoy
2322	MANPADS	MAN-Portable Air Defence System
2323	MANPRINT	MANpower and PeRsonnel INTegration
2324	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2325	MAOI	Monoamine oxidase inhibitor
2326	MAPS	Monitoring Avian Productivity and Survivorship
2327	MAR	Morocco (ISO 3166 trigram)
2328	MarBEF	Marine Biodiversity and Ecosystem Functioning
2329	MARCENT	United States Marine Forces Central Command
2330	MARFORCC	Marine Force Component Commander
2331	MASAS	Monte Agliale Supernovae and Asteroid Survey
2332	Maser	Microwave Amplification by Stimulated Emission of Radiation
2333	MASH	Mobile Army Surgical Hospital
2334	MASINT	Measurement And Signature Intelligence
2335	MAVS	Mobile Artillery Vehicle System
2336	MB	Manitoba (postal symbol),Medal of Bravery (Canada)
2337	MBA	Main Battle Area,Main Belt Asteroid,Masters of Business Administration
2338	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2339	MBCC	Migratory Bird Conservation Commission (U.S.)
2340	MBCS	Multi-Byte Character Set
2341	MBI	Moody Bible Institute
2342	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2343	MBM	Meat and Bone Meal
2344	MBT	Main Battle Tank
2345	MBTI	Myers-Briggs Type Indicator
2346	mC	Millicoulomb
2347	MCDL	Model Composition Definition Language
2348	MCFT	Modified Compression Field Theory
2349	MCG	Melbourne Cricket Ground
2350	MCIS	Mellon Collie and the Infinite Sadness
2351	MCM	Mine Counter-Measures
2352	MCMV	Mine Counter-Measure Vessel
2353	MCR	My Chemical Romance
2354	MCSF	Marine Corps Security Forces
2355	MCT	Movement Control Team
2356	MCTIS	Mounted Co-operative Target Identification System
2357	Md	Mendelevium
2358	MDNA	Madonna's 12th studio album title (2012)
2359	MDO	Membership Driven Organisation
2360	MDP	Markov Decision Process
2361	MDT	Mountain Daylight Time (UTC-6 hours)
2362	MDV	Maldives (ISO 3166 trigram)
2363	Me	Messerschmitt
2364	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2365	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)
2366	MEDEVAC	Medical evacuation
2367	MEDS	Mission Essential Data Set
2368	MEG	MagnetoEncephaloGraphy
2369	MELT	Metallic Line/Loop Test (ing)
2370	MEMS	Microelectromechanical System
2371	MER	Mars Exploration Rover
2372	MERL	Mitsubishi Electric Research Laboratories
2373	MES	Manufacturing Execution Systems
2374	METAR	[Meteorological] Aviation Routine weather report
2375	METOC	Meteorological and Oceanographic
2376	MeV	Megaelectronvolt
2377	MEX	Mexico (ISO 3166 trigram)
2378	MEZ	Missile Engagement Zone
2379	MF	Megafarad
2380	mF	Millifarad
2381	MG	Machine Gun,Madagascar (ISO 3166 digram),Major General,Morris Garage
2382	MGPAM	My Gym Partner's a Monkey
2383	MGS	Mobile Gun System
2384	mH	Millihenry
2385	MHC	Major Histocompatibility Complex
2386	MHHW	Mean Higher High Water (nautical charts)
2387	MHL	Marshall Islands (ISO 3166 trigram)
2388	MHLW	Mean Higher Low Water (nautical charts)
2389	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2390	MHW	Mean High Water (nautical charts)
2391	MHWN	Mean High Water Neaps (nautical charts)
2392	MHWS	Mean High Water Springs (nautical charts)
2393	MHz	Megahertz
2394	Mi	Mebi
2395	MIA	Missing In Action
2396	MICLIC	Mine Clearing Line Charge
2397	MICOM	Missile Command
2398	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2399	MIDAS	Man-machine Integration Design and Analysis System
2400	MIDI	Musical Instrument Digital Interface
2401	MIDS	Multi-Function Information Distribution System
2402	MIFG	Shallow Fog (METAR Code)
2403	MIKE	Monitoring of Illegal Killing of Elephants
2404	MIL	Man-In-the-Loop
2405	MILC	Mirrorless interchangeable-lens camera
2406	MILF	Mother I'd Like to Fuck
2407	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2408	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2409	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2410	MIRV	Multiple Independent Reentry Vehicle
2411	MISREP	Mission Report
2412	MISSI	Multilevel Information System Security Initiative
2413	MITL	Man-In-The-Loop
2414	MITS	see entry
2415	mJ	Millijoule
2416	MJD	Modified Julian Day
2417	mK	Millikelvin
2418	MKG	Michael Kidd-Gilchrist (American basketball player)
2419	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2420	mL	Millilitre
2421	MLB	Major League Baseball
2422	MLC	Member of the Legislative Council (in India)
2423	MLE	Maximum likelihood estimation
2424	MLHW	Mean Lower High Water (nautical charts)
2425	MLI	Mali (ISO 3166 trigram)
2426	MLL	Major League Lacrosse
2427	MLLW	Mean Lower Low Water (nautical charts)
2428	MLP	My Little Pony
2429	MLRS	Multiple-Launch Rocket System
2430	MLT	Malta (ISO 3166 trigram)
2431	MLW	Mean Low Water (nautical charts)
2432	MLWN	Mean Low Water Neaps (nautical charts)
2433	MLWS	Mean Low Water Springs (nautical charts)
2434	Mm	Megametre
2435	mm	Millimetre
2436	MMEV	Multi-Mission Effects Vehicle
2437	MMI	Magical MonkeyZ Inc.
2438	MMI	Man-Machine Interface
2439	MMI	McLean Meditation Institute
2440	MMIC	McLean Meditation Institute Certified
2441	MMO	Massively Multiplayer Online (computer game)
2442	MMOR	Master of Management in Operations Research
2443	MMORPG	Massively multiplayer online role-playing game
2444	MMPR	Mighty Morphin Power Rangers
2445	MMS	Multimission Modular Spacecraft
2446	Mn	Manganese
2447	mN	Millinewton
2448	MNB	Multinational Brigade
2449	MNE	Montenegro (ISO 3166 trigram)
2450	MNMF	Multi-National Maritime Force
2451	MNP	Northern Mariana Islands (ISO 3166 trigram)
2452	MNS	Mission Needs Statement
2453	Mo	Molybdenum
2454	MOA	Museum of Art (Brigham Young University)
2455	MOCAS	Mechanization Of Contract Administration Services
2456	MoD	Ministry of Defence (United Kingdom) and various other countries
2457	modem	Modulator-Demodulator
2458	Moe	Marvel of entertainment
2459	MOE	Measure Of Effectiveness
2460	MOF	Ministry of Finance (Japan)
2461	MOFA	Ministry of Foreign Affairs (Japan)
2462	MOID	Minimum Orbital Intersection Distance
2463	MOJWA	Movement for Oneness and Jihad in West Africa
2464	MOLO	Mobile Other Licensed Operator (UK)
2465	MOM	Master's Degree in Oriental medicine
2466	MOM	Message Oriented Middleware
2467	MoM	Multiple of the median
2468	MoMA	Museum of Modern Art (NYC)
2469	MOND	Modified Newtonian Dynamics
2470	MOO	Measure Of Outcome
2471	MOPP	Mission-Oriented Protective Posture
2472	MORP	Meteorite Observation and Recovery Project
2473	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2474	MOT	Ministry of Transport (UK)
2475	MOTA	Member of the Orthodontic Technicians Association
2476	MOTESS	Moving Object and Transient Event Search System
2477	MOU	Memorandum Of Understanding
2478	MOW	Maintenance of way (also MW)
2479	MOZ	Mozambique (ISO 3166 trigram)
2480	MPa	Megapascal
2481	mPa	Millipascal
2482	MPAA	Motion Picture Association of America
2483	MPEC	Minor Planet Electronic Circular
2484	MPEG	Motion Pictures (Coding) Experts Group
2485	MPEV	Multi-Purpose Engineering Vehicle
2486	MPF	Maritime Prepositioning Force
2487	MPFC	Medial PreFrontal Cortex
2488	MPG	Miles Per Gallon
2489	MPMC	Medial PreMotor Cortex
2490	MPSI	Member of the Pharmaceutical Society of Ireland
2491	MPSoC	MultiProcessor System-on-Chip
2492	MPSRON	Maritime Propositioning Ship Squadron
2493	MR	Mauritania (ISO 3166 digram)
2494	MRAV	Multi-Role Armoured Vehicle
2495	MRBM	Medium Range Ballistic Missile
2496	MRC	Maintenance Requirements Card
2497	MRD	Motorized Rifle Division
2498	MRGW	Medium-Range Guided Weapon
2499	MRI	Magnetic Resonance Imaging
2500	MRL	Multiple Rocket Launcher
2501	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2502	MRS	Magnetic Resonance Spectroscopy
2503	MRSA	Methicillin-resistant Staphylococcus aureus
2504	MRTFB	U.S. Major Range and Test Facility Base
2505	Ms	Megasecond
2506	mS	Millisiemens
2507	MSD	Minimum Safe Distance
2508	MSDB	Multi Source Data Base
2509	MSE	Multiple Subscriber Element
2510	MSG	Message
2511	MSLP	Mean Sea Level Pressure
2512	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2513	MSO	Multiple System Operator
2514	MSPB	Merit Systems Protection Board
2515	MSSA	Methicillin-susceptible Staphylococcus aureus
2516	Mt	Meitnerium
2517	mT	Millitesla
2518	MTBF	Mean Time Between Failures
2519	MtF	Male-to-female transsexual
2520	MTG	Magic: The Gathering
2521	MTQ	Martinique (ISO 3166 trigram)
2522	MTT	Methylthiazol tetrazolium (assay)
2523	MTTF	Mean Time To Failure
2524	MTTR	Mean Time To Recover
2525	MTWS	MAGTF Tactical Warfare System
2526	MUS	Mauritius (ISO 3166 trigram)
2527	mV	Millivolt
2528	MVC	Missouri Valley Conference
2529	MVFC	Missouri Valley Football Conference
2530	MVNO	Mobile virtual network operator
2531	mW	Milliwatt
2532	MWESH	Machismo Wizards Extended SHelter (operating system)
2533	MWI	Malawi (ISO 3166 trigram)
2534	MWOA	Mount Wilson Observatory Association
2535	MWTB	Mounted Warfare Test Bed
2536	MY	Malaysia (ISO 3166 digram)
2537	MYOB	Mind Your Own Business
2538	MYS	Malaysia (ISO 3166 trigram)
2539	MYT	Mayotte (ISO 3166 trigram)
2540	n	Nano
2541	N/A	Not Available, Not Applicable, or: No Answer
2542	N3F	National Fantasy Fan Federation
2543	nA	Nanoampere
2544	Na	Sodium (Latin Natrium)
2545	NAA	N-Acetylaspartate
2546	NAAD	North American Air Defense
2547	NAAQS	National Ambient Air Quality Standards
2548	NAAWS	NATO Anti-Air Warfare System
2549	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2550	NACC	North Atlantic Cooperation Council
2551	NACISA	NATO Communications and Information Systems Agency
2552	NACMA	NATO Air Command and Control System Management Agency
2553	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2554	NAEC	U.S. Naval Air Engineering Center
2555	NAFERA	Native American Free Exercise of Religion Act
2556	NAFLD	NonAlcoholic Fatty Liver Disease
2557	NAFO	Northwest Atlantic Fisheries Organization
2558	NAFTA	North American Free Trade Agreement
2559	NAGPRA	Native American Graves Protection and Repatriation Act
2560	NAICS	North American Industry Classification System
2561	NAIL	Neurotics Anonymous
2562	NAILS	National Airspace Integrated Logistics System
2563	NAIRU	Non Accelerating Inflation Rate of Unemployment
2564	NAK	Negative Acknowledge
2565	NAM	Namibia (ISO 3166 trigram)
2566	NAMBLA	North American Man-Boy Love Association
2567	NAMRL	Naval Aerospace Medical Research Laboratory
2568	NaN	Not A Number (computing)
2569	NAO	UK National Audit Office
2570	NAPS	Navy Acquisition Procedures Supplement
2571	NARA	(U.S.) National Archives and Records Administration
2572	NARAL	National Abortion Rights Action League
2573	NARDAC	Naval Regional Data Automation Center
2574	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2575	NARPV	National Association for Remotely Piloted Vehicles
2576	NASCAR	National Association for Stock Car Auto Racing
2577	NASDAQ	National Association of Securities Dealers Automated Quotations
2578	NASED	National Association of State Election Directors [1][2]
2579	NASH	Non-Alcoholic Steatohepatitis
2580	NASP	National Aerospace Plane
2581	NASS	National Association of Secretaries of State [3]
2582	NatGeo	National Geographic
2583	NaUKMA	National University of Kyiv-Mohyla Academy
2584	NAV	Navigation[al]
2585	NAVCAMS	Naval Communications Area Master Station
2586	NAVCC	National Audio-Visual Conservation Center
2587	NAVCENT	Naval Forces U.S. Central Command
2588	NAVDAC	Naval Data Automation Command
2589	NAVEUR	Naval Forces U.S. European Command
2590	NAVFOR	Naval Force
2591	NAVMACS	Naval Modular Automatic Communication Subsystem
2592	NAVNET	Navy Network
2593	NAVS	Non-Cooperative Airborne Vector Scoring
2594	NAVSAT	Navigation Satellite
2595	NAVSPACECOM	U.S. Navy Space Command
2596	NAVSPASUR	U.S. Naval Space Surveillance System
2597	NAVSTAR	Navigation Satellite Timing And Ranging
2598	NAVTACNET	Navy Tactical Network
2599	NAWC	U.S. Naval Air Warfare Center
2600	Nb	Niobium
2601	NBA	National Basketball Association
2602	NBL	National Basketball League (Australia)
2603	NBT	Nitroblue tetrazolium (assay)
2604	nC	Nanocoulomb
2605	NCA	National Command Authority
2606	NCAR	U.S. National Center for Atmospheric Research
2607	NCB	National Codification Bureau
2608	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2609	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2610	NCDDR	U.S. National Center for the Dissemination of Disability Research
2611	NCI	U.S. National Cancer Institute
2612	NCL	New Caledonia (ISO 3166 trigram)
2613	NCLR	National Council of La Raza
2614	NCMO	No Commitment Make Out
2615	NCO	Non-Commissioned Officer
2616	NCP	Net Contracted Purchases
2617	NCR	National Cash Register Co.
2618	NCTR	Non-Co-operative Target Recognition
2619	NCW	Network Centric Warfare
2620	Nd	Neodymium
2621	NDAA	U.S. National Defense Authorization Act
2622	NDBP	Non-Departmental Public Body (Scotland)
2623	NDP	New Democratic Party (Canada)
2624	NDS	Nintendo DS
2625	Ne	Neon
2626	NECTEC	National Electronics and Computer Technology Center (Thailand)
2627	NEMS	National Energy Modeling System (USDOE-EIA)
2628	NEPA	National Environmental Policy Act
2629	NER	Niger (ISO 3166 trigram)
2630	NERICA	New Rice for Africa
2631	NESP	NSA/CSS Enterprise Standards Program
2632	NET	National Educational Television
2633	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2634	NETL	(US) National Energy Technology Laboratory
2635	NETWARS	Network Warfare Simulation
2636	NEX	Navy EXchange
2637	nF	Nanofarad
2638	NF	Norfolk Island (ISO 3166 digram)
2639	NFER	National Foundation for Educational Research
2640	NFG	No Fucking Good
2641	NFHS	National Federation of State High School Associations
2642	NFI	Not F****** Interested
2643	NFK	Norfolk Island (ISO 3166 trigram)
2644	Nfld	Newfoundland
2645	NFPA	National Fluid Power Association (United States)
2646	NFT	No Further Text
2647	NGA	U.S. National Geospatial-Intelligence Agency, Nigeria (ISO 3166 trigram)
2648	NGATS	New Generation Army Targetry System
2649	NGH	Northern General Hospital
2650	NGO	non-governmental organization
2651	NGS	Naval Gunfire Support
2652	nH	Nanohenry
2653	NHANES	National Health and Nutrition Examination Survey
2654	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2655	NHB	No Holds Barred radio (Link)
2656	NHL	National Hockey League
2657	NHRA	National Hot Rod Association
2658	NHS	National Health Service (UK)
2659	Ni	Nickel
2660	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2661	NIAG	NATO Industrial Advisory Group
2662	NIAID	National Institute of Allergies and Infectious Disease
2663	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2664	NIB	New In Box (Internet auction/trading listings)
2665	NIBP	Non-invasive blood pressure monitor
2666	NicA	Nicotine Anonymous
2667	NICAP	National Investigations Committee on Aerial Phenomena
2668	NICE	UK. National Institute for Health and Clinical Excellence
2669	NICHD	National Institute of Child Health and Human Development [4]
2670	NICP	National Inventory Control Point
2671	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2672	NIDRR	National Institute on Disability Research and Rehabilitation
2673	NIEHS	National Institute of Environmental Health Sciences
2674	NIIN	National Item Identification Number
2675	NIMA	National Imagery and Mapping Agency (became NGA)
2676	NIMBY	Not In My Back Yard (See NOME)
2677	NIMG	Not In My Generation
2678	NIN	Nine Inch Nails (band)
2679	NIPR	National Institute of Polar Research (Japan)
2680	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2681	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2682	NISCAP	NSA Information System Certification and Accreditation Program
2683	NISER	National Institute of Science Education and Research
2684	NIST	National Institute of Standards and Technology
2685	NITFS	National Imagery Transmission Format Standard
2686	NIU	Niue (ISO 3166 trigram)
2687	nJ	Nanojoule
2688	NJ	New Jersey (postal symbol)
2689	NJHS	National Junior Honor Society
2690	NJPW	New Japan Pro Wrestling
2691	nK	Nanokelvin
2692	NKA	No Known Allergies
2693	nL	Nanolitre
2694	NLB	Non-Linear Battlefield
2695	NLD	Netherlands (ISO 3166 trigram)
2696	NLF	National Liberation Front (disambiguation)
2697	NLL	National Lacrosse League
2698	NLP	Natural Language Processing,Neuro-Linguistic Programming (pseudoscience)
2699	NLRB	National Labor Relations Board
2700	NLW	Non-Lethal Weapon
2701	nm	Nanometre
2702	NM	New Mexico (postal symbol)
2703	NMCI	Navy Marine Corps Intranet
2704	NMCS	Not Mission Capable Supply (SM&R code)
2705	NMD	U.S. National Missile Defense
2706	NMHNFG	Not Made Here,No Fucking Good
2707	NMN	No middle name
2708	NMR	Nuclear Magnetic Resonance
2709	NMSG	NATO Modelling and Simulation Group
2710	nN	Nanonewton
2711	NNE	North North-East
2712	NNSA	U.S. National Nuclear Security Administration
2713	NNW	North North-West
2714	NO	Nitric Oxide,Normally Open,Norway (ISO 3166 and FIPS 10-4 country code digram)
2715	No	Nobelium
2716	NOAA	U.S. National Oceanic and Atmospheric Administration
2717	NOAF	Norwegian Air Force
2718	NOAO	National Optical Astronomy Observatory
2719	NOC	UK. National Oceanography Centre
2720	NODEF	NATO Oceanographic Data Exchange Format
2721	NOGI	New Orleans Grande Isle (award for diving)
2722	NOLA	New Orleans,Louisiana (LA is the official postal code for Louisiana)
2723	NOLF	Navy OutLying Field
2724	NoMBO	Non-mine,Mine-like Bottom Object
2725	NOME	Not on Mars Either
2726	NOME	Not on Mars Either (see NIMBY)
2727	NOPA	National Office Products Alliance,National Office Products Association
2728	NOR	Norway (ISO 3166 trigram)
2729	NORELPREF	No religious preference
2730	NORTHAG	Northern Army Group
2731	NOS	Network Operating System,New Old Stock (Internet auction/trading listings),Nitric Oxide Synthase (enzyme)
2732	NOSA	NATO OSI Security Architecture
2733	NOTAFLOF	No One Turned Away For Lack Of Funds
2734	NOW	National Organization for Women
2735	NP	National Permit,A permit in India for trucks so they can go anywhere in the nation
2736	Np	Neap tide (nautical charts),Neptunium
2737	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2738	NPB	Nippon Professional Baseball
2739	NPC	National Postgraduate Committee,National Provincial Championship (New Zealand rugby competition,now defunct),Navigation Planning Chart
2740	NPCS	Non-Passenger Coaching stock (in Railways)
2741	NPD	Nationaldemokratische Partei Deutschlands (German)
2742	NPDI	New Product Development and Introduction
2743	NPG	Needline/Network Participation Group
2744	NPH	Normal Pressure Hydrocephalus
2745	NPL	National Priorities List,Nepal (ISO 3166 trigram)
2746	NPO	nothing by mouth
2747	NPOV	Neutral Point Of View
2748	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2749	NQOCD	Not Quite Our Class,Dear (or Darling). (Upper-class English slang)
2750	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2751	NRA	National Rifle Association
2752	NRAO	National Radio Astronomy Observatory
2753	NRC	(U.S.) National Research Council,Nuclear Regulatory Commission (U.S.)
2754	NRDC	(U.S.) Natural Resources Defense Council
2755	NREL	(U.S.) National Renewable Energy Laboratory
2756	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2757	NRMP	National Resident Matching Program (U.S. medicine)
2758	NRO	(U.S.) National Reconnaissance Office
2759	NRT	Near Real Time
2760	NRTA	National Rat Terrier Association,National Retail Tenants Association,National Retired Teachers Association,Northwest Regional Transmission Association
2761	NRU	Nauru (ISO 3166 trigram)
2762	ns	Nanosecond
2763	nS	Nanosiemens
2764	NS	Norfolk Southern Railway (AAR reporting mark),Nova Scotia (postal symbol),Suriname (FIPS 10-4 country code)
2765	NSA	Naval Support Activity,No Strings Attached
2766	NSABB	National Science Advisory Board for Biosecurity
2767	NSAID	Non-Steroidal Anti-Inflammatory Drug
2768	NSB	Norges Statsbaner (Norwegian State Railways)
2769	NSC	National Security Council
2770	NSDAP	Nationalsozialistische Deutsche Arbeiterpartei (German: 'German National Socialist Workers Party',the formal name of the Nazi Party)
2771	NSDL	National Science Digital Library (US)
2772	NSG	National System for Geospatial-Intelligence
2773	NSN	National Stock Number
2774	NSNA	National Student Nurses' Association
2775	NSO	National Standardization Office (ABCA)
2776	NSS	(U.S.) Naval Simulation System
2777	NST	(UK) Nimrod Software Team
2778	NSTAC	National Security Telecommunications Advisory Committee
2779	NSV	Nikitin-Sokolov-Volkov heavy machine gun (Russian НСВ Никитина-Соколова-Волкова) ru:ПулеметНСВ-12,7 'Утес'
2780	NSW	New South Wales (postal symbol)
2781	nT	Nanotesla
2782	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)
2783	NTC	National Training Center,Negative Temperature Coefficient (thermistor)
2784	NTDS	Naval Tactical Data System
2785	NTP	Network Time Protocol
2786	NTR	Network Time Reference
2787	NTRA	National Thoroughbred Racing Association
2788	NTSB	National Transportation Safety Board
2789	NTSC	National Television Standards Committee (colloquially,Never Twice the Same Color)
2790	NTV	Non-Tactical Vehicle
2791	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2792	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2793	NU	Nicaragua (FIPS 10-4 country code),Niue (ISO 3166 digram),Nunavut (postal symbol)
2794	NUL	Null character (ASCII code of control character),National Urban League
2795	NUTS	Nuclear Utilization Target Selection
2796	NUWC	U.S. Naval Undersea Warfare Center
2797	nV	Nanovolt
2798	NVEOL	Night Vision and Electro-Optics Laboratory
2799	NVESD	CERDEC Night Vision and Electronic Sensors Directorate,Fort Belvoir,Virginia
2800	NVG	Night Vision Goggles
2801	NVL	Night Vision Laboratory
2802	nW	Nanowatt
2803	NW	North-West
2804	NW	Nuclear Weapon
2805	NWA	National Wrestling Alliance
2806	NWF	National Wildlife Federation
2807	NWFZ	Nuclear-Weapon-Free Zone
2808	NWHN	U.S. National Women's Health Network
2809	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2810	NWOAHM	New Wave of American Heavy Metal
2811	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2812	NWRA	National Wildlife Rehabilitators Association
2813	NWSL	National Women's Soccer League (U.S.)
2814	NWT	North-West Territories
2815	NXA	21st arcade game in the Pump It Up series
2816	NXD	Native XML
2817	NXE	New Xbox Experience
2818	NXG	New Cross Gate station
2819	NXL	National XBall League
2820	NXN	Nike Cross Nationals
2821	NY	New York (postal symbol)
2822	NYC	New York City
2823	NYT	New York Times
2824	NYHA	New York Heart Association
2825	NYO	National Youth Orchestra of Great Britain
2826	NYSE	New York Stock Exchange
2827	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2828	NZC	New Zealand Cricket
2829	NZL	New Zealand (ISO 3166 trigram)
2830	NzL	Noze looan (online/event listings)
2831	NZOSS	New Zealand Open Source Society
2832	NZRU	New Zealand Rugby Union
2833	OAC	On Approved Credit
2834	OAP	Old Age Pensioner (UK)
2835	OARSI	Osteoarthritis Research Society International
2836	OAS	Organization of American States
2837	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2838	OASIS	Ontario Association of Sewage Industry Services
2839	OASP	Operational Analysis Support Paper/Plan
2840	OAU	Organization for African Unity
2841	OBE	Officer of the Order of the British Empire
2842	OBX	Outer Banks (North Carolina)
2843	OC	Officer Commanding
2844	OCD	Obsessive-Compulsive Disorder
2845	OCFS	Oracle Cluster File System
2846	OCFS2	Oracle Cluster File System Release 2
2847	OCMCC	[2] Orchard County MCC
2848	OCN	Oncology Certified Nurse
2849	OCO	Oort Cloud Object
2850	OCR	Optical Character Recognition
2851	OCS	see entry
2852	ODAS	OCA-DLR Asteroid Survey
2853	ODBC	Open DataBase Connectivity
2854	OEA	(U.S.) Office of Economic Adjustment
2855	OECD	Organisation for Economic Co-operation and Development (international)
2856	OED	Oxford English Dictionary
2857	OEG	Operation Exposure Guidance
2858	OEIS	On-Line Encyclopedia of Integer Sequences
2859	OEM	Original Equipment Manufacturer
2860	OFA	Occipital Face Area
2861	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2862	OGC	Open Geospatial Consortium
2863	OGD	Other Government Department
2864	OGO	Other Government Organization
2865	OH	Ohio (postal symbol)
2866	OHC	OverHead-Cam engine
2867	OHHLA	Original Hip-Hop Lyrics Archive
2868	OHIP	Ontario Health Insurance Plan
2869	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2870	OHP	Observatoire de Haute-Provence
2871	OHSS	Ovarian Hyperstimulation Syndrome
2872	OIC	Officer In Charge
2873	OIF	Operation Iraqi Freedom
2874	OIOC	Oriental & India Office Collections (in the British Library)
2875	OJT	On-the-Job Training
2876	OKC	Oklahoma City
2877	OLED	Organic Light-Emitting Diode
2878	OLS	Operational Linescan System
2879	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2880	OME	Osaka Mercantile Exchange
2881	OMFG	Oh My Fucking God
2882	OMG	Oh My God or Or My Gosh
2883	OMGW	Oh My Gosh it's Windy
2884	OMN	Oman (ISO 3166 trigram)
2885	OMNCS	U.S. Office of the Manager for the National Communications System
2886	OMP	Order of Mapungubwe in Platinum
2887	OMS	Order of Mapungubwe in Silver
2888	OMT	Object Model Template
2889	ON	Ontario (postal symbol)
2890	ONC	Orthopaedic Nurse Certified
2891	ONG	Orthodontic National Group
2892	ONI	(U.S.) Office of Naval Intelligence
2893	ONS	Operational Needs Statement
2894	OOAD	Object Oriented Analysis and Design
2895	OOBE	Out-of-body experience
2896	OOCL	Orient Overseas Container Line
2897	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2898	OOF	Out of Facility
2899	OOMF	One Of My Followers
2900	OOO	Out Of the Office
2901	OOTW	Operations Other Than War
2902	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
2903	OPAC	Online Public Access Catalogue
2904	OPCON	Operational control
2905	OPCW	Organisation for the Prohibition of Chemical Weapons
2906	OPEC	Organization of the Petroleum Exporting Countries
2907	OPFOR	Opposing force
2908	OPINTEL	Operational Intelligence
2909	OPLAN	Operation plan (also OpPlan)
2910	OPORD	Operation order
2911	OPSEC	Operations security,Open Platform for Security
2912	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2913	OPTAR	Operational target
2914	OPV	Offshore Patrol Vessel
2915	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)
2916	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
2917	ORAU	Oak Ridge Associated Universities
2918	ORB	Object Request Broker
2919	ORBAT	Order of Battle
2920	ORD	Office of Research and Development,Operational Requirements Document
2921	ORF	Operational iness Float
2922	ORISE	Oak Ridge Institute for Science and Education
2923	ORNL	Oak Ridge National Laboratory
2924	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
2925	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2926	OS	Operating System
2927	Os	Osmium
2928	OSA	Order of St. Augustine
2929	OSCE	Organisation for Security and Cooperation in Europe
2930	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2931	OSDL	Open Source Development Labs
2932	OSE	Own Separate Entrance
2933	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2934	OSETI	Optical SETI also Optical SETI
2935	OSHA	Occupational Safety and Health Administration
2936	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2937	OSIA	(U.S.) On-Site Inspection Agency
2938	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)
2939	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2940	OSM	One Saturday Morning
2941	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2942	OSPA	Operations Security Professional's Association site of OSPA
2943	OSPA	Oregon School Psychologists Association [3]
2944	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2945	OSS	Office of Strategic Services (1942-1945, forerunner of CIA)
2946	OSU	Ohio State University,Oklahoma State University
2947	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2948	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2949	OTC	Over-The-Counter (drugs)
2950	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2951	OTEA	(U.S. Army) Operational Test Evaluation Agency
2952	OTI	Office of Transition Initiatives (United States Agency for International Development)
2953	OTOH	On The Other Hand
2954	OTS	Off the scale,sexually untouchable except for a lot of money
2955	OTSBH	Over The Shoulder Boulder Holder
2956	OTW	On The Way
2957	OTYBL	Over To You Blue Leader
2958	OTYRL	Over To You Red Leader
2959	OU	University of Oklahoma
2960	OW	Old Wykehamist
2961	OWN	Oprah Winfrey Network
2962	OX	IATA code for Orient Thai Airlines
2963	OXC	Optical cross-connect
2964	OXM	Official Xbox Magazine
2965	OXT	Oxytocin
2966	OZ	(?) Australia
2967	p	pico
2968	P2P	Peer-to-peer (networking)
2969	pA	picoampere
2970	PAA	Position Area for Artillery
2971	PABX	Private Automated Branch eXchange (company phone system)
2972	PACOM	(U.S.) Pacific Command
2973	PADI	Professional Association of Diving Instructors
2974	PAEK	PolyArylEtherKetone
2975	PAFC	Plymouth Argyle Football Club
2976	PAH	Polycyclic aromatic hydrocarbon
2977	PAHO	Pan American Health Organization
2978	PAK	Pakistan (ISO 3166 trigram)
2979	PAM	Precision Attack Missile
2980	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2981	PARC	Palo Alto Research Center
2982	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2983	PARP	(NATO Partnership for Peace) Planning And Review Process
2984	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2985	PAS	See entry
2986	PASR	Personnel Accounting and Strength Reporting
2987	PATH	Port Authority Trans-Hudson
2988	PAYD	Pay As You Drive
2989	PAYE	Pay As You Earn
2990	Pb	Lead (Latin Plumbum)
2991	PB	PolyButylene
2992	PBB	PolyBrominated Biphenyl
2993	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2994	PBD	PolyButaDiene
2995	PBDE	PolyBrominated Diphenyl Ether
2996	PBI	PolyBenzImidazole
2997	PBN	PolyButylene Naphthalate
2998	PBOH	Please Become Old History
2999	PBT	PolyButylene Terephthalate
3000	PBX	Private Branch eXchange (company phone system)
3001	pC	picocoulomb
3002	PCAS	Planet-Crossing Asteroid Survey
3003	PCB	see entry
3004	PCCB	Porsche Ceramic Composite Brake
3005	PCCIP	President's Commission on Critical Infrastructure Protection
3006	PCE	PerChlorEthylene
3007	PCIe	Peripheral Component Interconnect Express (computer bus)
3008	PCL	Passive Coherent Location
3009	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
3010	PCN	Pitcairn Islands (ISO 3166 trigram)
3011	PCPI	Physician Consortium for Performance Improvement (AMA)
3012	PCR	Polymerase chain reaction
3013	PCSSD	Pulaski County Special School District
3014	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
3015	Pd	Palladium
3016	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
3017	PDL	Pure Dumb Luck (Texan punk band)
3018	PDN	Pull-Down Network
3019	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
3020	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
3021	PE	Professional Engineer
3022	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
3023	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
3024	PEEK	PolyEtherEtherKetone
3025	PEET	Partnerships for Enhancing Expertise in Taxonomy
3026	PEK	PolyEtherKetone
3027	PEPFAR	President's Emergency Plan For AIDS Relief
3028	PER	Peru (ISO 3166 trigram)
3029	perl	usually lower case Practical Extraction and Report Language
3030	PES	PolyEtherSulfone
3031	PEST	UK Public Engagement with Science and Technology
3032	PETE	PolyEthyleneTErephthalate
3033	PETP	PolyEthyleneTerePhthalate
3034	pF	picofarad
3035	PFD	Permanent Fund Dividend = personal flotation device
3036	PFE	Permanent Forest Estate
3037	PfP	Partnership for Peace
3038	Pg	petagram
3039	pg	picogram
3040	PGCE	Postgraduate Certificate in Education
3041	PGD	Pre-implantation Genetic Diagnosis
3042	PGENI	Pharmaco-Genetics for Every Nation Initiative
3043	PGH	Pre-implantation Genetic Haplotyping
3044	PGM	Precision-Guided Munition
3045	PGP	Pretty Good Privacy
3046	PHL	Philippines (ISO 3166 trigram)
3047	PHQ	Patient Health Questionnaire
3048	Pi	Pebi
3049	PIB	PolyIsoButylene
3050	PIC	Person In Charge
3051	PICNIC	Problem In Chair Not In Computer
3052	PICS	Private Investment Capital Subscription
3053	PIF	Partners in Flight
3054	PIG	Pipeline Inspection Gauge
3055	PIN	Personal Identification Number
3056	PINF	People In Need Foundation (Czech charitable organisation)
3057	PIPA	Program on International Policy Attitudes
3058	PIR	Priority Intelligence Requirement
3059	PIRA	Provisional Irish Republican Army
3060	PIREPS	Pilot Reports
3061	PITA	Pain In The Ass
3062	PJ	petajoule
3063	pJ	picojoule
3064	PJHQ	Permanent Joint Headquarters
3065	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
3066	PKI	Public Key Infrastructure (cryptography)
3067	PKU	Phenylketonuria
3068	pL	picolitre
3069	PLAID	Precision Location and Identification
3070	PLB	Personal Locator Beacon
3071	PLC	Public Limited Company (British)
3072	PLCC	Plastic Leaded Chip Carrier (electronics)
3073	PLD	Probable Line of Deployment
3074	PLEBS	People Lacking Everyday Basic Skills
3075	PLF	Parachute Landing Fall
3076	PLIF	Planar Laser-Induced Fluorescence
3077	PLL	Phase-Locked Loop (electronics)
3078	PLM	Polarized Light Microscope/Microscopy
3079	PLMBA	Phospholipid Bilayer Microarray
3080	Pln	Platoon
3081	PLO	Palestine Liberation Organization
3082	PLOKTA	Press Lots Of Keys To Abort
3083	PLP	Platonic Life Partner
3084	PLUTO	Pipe Line Under The Ocean
3085	PLW	Palau (ISO 3166 trigram)
3086	pm	picometre
3087	PMC	Primary Motor Cortex
3088	PMI	Positive Material Identification
3089	PMID	PubMed Identifier
3090	PMMA	PolyMethylMethAcrylate
3091	PMS	Premenstrual Syndrome
3092	PMSL	Piss Myself Laughing (Internet shorthand)
3093	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
3094	pN	piconewton
3095	PNAC	Project for the New American Century
3096	PNVS	Pilot Night Vision Sensor
3097	Po	Polonium
3098	PO	Post Office
3099	PO	Purchase Order
3100	POCD	Post-Operative Cognitive Dysfunction
3101	pod	Plain Old Documentation
3102	POFF	Plain Old Flat File
3103	POGO	Project On Government Oversight
3104	POI	Program Of Instruction
3105	POK	Plane Of Knowledge
3106	POLAD	Political Advice
3107	POMDP	Partially observable Markov decision process
3108	PooS	Poo Sniffer (Internet shorthand)
3109	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
3110	POSH	Port Outbound Starboard Home (alleged)
3111	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
3112	POT	Plane Of Tranquility
3113	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
3114	POTUS	President of the United States
3115	POV	Point of view
3116	POW	Prisoner of war
3117	PPASC	(U.S.) Plans and Program Analysis Support Center
3118	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
3119	PPLI	Precise Participant Location & Identification
3120	PPM	Project Planning and Management
3121	PPO	PolyPhenylene Oxide
3122	PPQN	Pulses Per Quarter Note (ditto)
3123	PPQT	Pre-Production Qualification Test
3124	PPV	Pay-per-view
3125	Pr	Pastor, Priest
3126	PR	Public Relations
3127	Prb	Presbyter
3128	PRBO	Point Reyes Bird Observatory
3129	PRC	People's Republic of China
3130	PRD	CERDEC Product Realization Directorate
3131	PRFG	Partial Fog (METAR Code)
3132	PRI	Puerto Rico (ISO 3166 trigram)
3133	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
3134	PRM	Personnel iness Management
3135	PRY	Paraguay (ISO 3166 trigram)
3136	Ps	petasecond
3137	pS	picosiemens
3138	PSG	Pacific Seabird Group
3139	PSI	Portable Source Initiative
3140	PSI	Pounds per square inch
3141	PSS	Personnel System Support
3142	PST	Pacific Standard Time (UTC-8 hours)
3143	PSU	Pennsylvania State University
3144	PsyOp	Psychological Operations
3145	pT	picotesla
3146	Pt	Platinum
3147	PTA	Parent-Teacher Association
3148	PTAL	Public Transport Accessibility Level
3149	PTES	People's Trust for Endangered Species
3150	PTFE	PolyTetraFluoroEthylene
3151	PTI	Pardon the Interruption
3152	PTSD	Post-Traumatic Stress Disorder
3153	Pu	Plutonium
3154	Pub	Publication
3155	PUG	PET Users Group
3156	PUN	Pull-Up Network
3157	PUP	Pull-Up Point
3158	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
3159	PV	petavolt
3160	pV	picovolt
3161	PvE	Player versus Environment
3162	PvP	Player versus Player
3163	PVR	Personal Video Recorder
3164	PvZ	Plants vs. Zombies
3165	PW	Palau (postal symbol; ISO 3166 digram)
3166	pW	picowatt
3167	PWA	Pirates With Attitude
3168	PWBA	Pension and Welfare Benefits Administration
3169	PWC	PieceWise Constant (describing a mathematical function)
3170	PwC	PricewaterhouseCoopers (international accounting firm)
3171	PWL	PieceWise Linear (describing a mathematical function)
3172	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
3173	PWR	Pressurized Water Reactor
3174	PX	Post eXchange
3175	PYF	French Polynesia (ISO 3166 trigram)
3176	PYMWYMI	Put Your Money Where Your Mouth Is
3177	Q1	First quarter of the year
3178	Q2	Second quarter of the year
3179	Q3	Third quarter of the year
3180	Q4	Fourth quarter of the year
3181	QA	Qatar (ISO 3166 digram)
3182	Qantas	Queensland And Northern Territory Aerial Services
3183	QAT	Qatar (ISO 3166 trigram)
3184	QB	Quarterback (football)
3185	QCD	Quantum ChromoDynamics
3186	QD	quaque die (Latin for 'daily')
3187	QDR	Quadrennial Defense Review
3188	QEH	Queen Elizabeth's Hospital
3189	QK	Air Canada Jazz (IATA airline designator)
3190	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
3191	QPS	Quark Publishing System
3192	QS	quantum sufficit (Latin, 'as much as suffices')
3193	QSCAT	Quick Scatterometer satellite
3194	QSL	Québec Sign Language
3195	QSO	Quasi-Stellar Object
3196	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3197	Quasar	Quasi-stellar radio source
3198	QUB	Queen's University Belfast
3199	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3200	qv	quod vide (Latin, 'which see')
3201	QZ	Awair (IATA airline designator)
3202	R2I	Resistance to Interrogation
3203	RA	Radio Australia
3204	Ra	Radium
3205	RAAF	Royal Australian Air Force
3206	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3207	RACK	Risk Aware Consensual Kink (SM phrase)
3208	Racon	RAdar beaCON
3209	RADA	Royal Academy of Dramatic Art
3210	Radar	Radio Detection And Ranging
3211	RadB	Rad51/Dmc1 homologous protein
3212	RADb	Routing Assets Data Base
3213	RADC	Region Air Defence Commander
3214	RAE	UK Royal Aircraft Establishment (-1991)
3215	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3216	Ramark	RAdar MARKer
3217	RAOC	Rear Area Operation Centre
3218	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3219	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3220	RATELO	Radiotelephone Operator
3221	Rb	Rubidium
3222	RB	Running Back (football)
3223	RBI	Runs Batted In
3224	RC	see entry
3225	RCAF	Royal Canadian Air Force
3226	RCC	Rescue Co-ordination Centre
3227	RCCO	Royal Canadian College of Organists
3228	RCHA	Royal Canadian Horse Artillery (regiment)
3229	RCMP	Royal Canadian Mounted Police
3230	RD	Radio Disney
3231	RDD	Radiological Dispersion Device
3232	RDM	Remotely Delivered/Deliverable Mine
3233	RDT	Remote Digital Terminal
3234	RDV	Remote Detection Vehicle
3235	Re	Rhenium
3236	RE	Royal Engineers
3237	REACT	Remote Electronically Activated Control Technology
3238	REAM	Retired Educators Association of Minnesota
3239	RECCE	Reconnaissance
3240	REEF	Reef Environmental Education Foundation
3241	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3242	REME	Royal Electrical and Mechanical Engineers
3243	RERC	Rehabilitation Engineering Research Center
3244	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3245	REU	Réunion (ISO 3166 trigram)
3246	Rf	Rutherfordium
3247	RFD	Request for Documentation
3248	RFE	Request for Evaluation
3249	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3250	RFF	Right of First Refusal (legal term)
3251	RFID	Radio Frequency IDentification
3252	RFL	Rugby Football League
3253	RFP	Request for Proposal
3254	RFQ	Request for Quotation
3255	RFT	Request for Tender
3256	RFU	Rugby Football Union
3257	RG	Republican Guard
3258	Rg	Roentgenium
3259	RGB	Red Green Blue (colour model)
3260	RGBI	Red Green Blue Intensity (ditto)
3261	Rh	Rhodium
3262	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3263	RHIC	Relativistic Heavy Ion Collider
3264	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3265	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3266	RHU	Replacement Holding Unit
3267	RI	Rhode Island (postal symbol)
3268	RIAA	Recording Industry Association of America
3269	RIBA	Royal Institute of British Architects
3270	RIFA	Red imported fire ant
3271	RILA	Retail Industry Leaders Association
3272	RIMVS	Retinal Imaging Machine Vision System
3273	RINO	Republican In Name Only[1]
3274	RIP	Relief In Place,requiesca[n]t in pace (Latin for 'may he/she/they rest in peace')
3275	RISC	Reduced Instruction Set Computer
3276	RJD	Reduced Julian Day
3277	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3278	RKO	Radio-Keith-Orpheum Pictures
3279	RLP	Recognised [Operating/Operational] Land Picture
3280	RLS	Restless Leg Syndrome
3281	RLY	Rally Point
3282	RM	see separate disambiguation page
3283	RMC	Robert Menzies College
3284	RMDA	Records Management and Declassification Agency
3285	RMP	Recognised [Operating/Operational] Maritime Picture
3286	RN	Radio Netherlands
3287	Rn	Radon
3288	RNA	RiboNucleic Acid
3289	RNAD	Royal Naval Armaments Depot (UK)
3290	RNPS	Radio Network Planning System
3291	RNZ	Radio New Zealand
3292	RNZI	Radio New Zealand International
3293	ROA	Rate Of Ascent
3294	ROE	Rules Of Engagement
3295	ROFLOL	Rolling On the Floor Laughing Out Loud
3296	ROH	Ring of Honor
3297	ROK	Republic of Korea
3298	ROP	Render Output Pipeline
3299	ROPE	Research Opportunity and Performance Evidence
3300	ROS	Reactive Oxygen Species
3301	ROU	Romania (ISO 3166 trigram)
3302	ROV	Remotely Operated Vehicle
3303	ROZ	Restricted Operations Zone
3304	RPA	Regional Plan Association
3305	RPD	Recognition-Primed Decision-making
3306	RPF	Rwandan Patriotic Front
3307	RPL	Reverse Polish Lisp
3308	RPM	Revolutions Per Minute
3309	RPN	reverse Polish notation
3310	rps	revolutions per second
3311	RPV	Remotely Piloted Vehicle
3312	RQ	Puerto Rico (FIPS 10-4 territory code)
3313	RRB	Railroad Retirement Board
3314	RRN	Recurrence Rate Number
3315	RRP	Recurrent Respiratory Papillomatosis
3316	RRS	Racing Rules of Sailing
3317	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3318	RS	Russia (FIPS 10-4 country code)
3319	RSI	Repetitive Strain Injury
3320	RSJ	Rolled Steel Joist (construction)
3321	RSN	Real Soon Now (coined by author Jerry Pournelle)
3322	RSPB	(UK) Royal Society for the Protection of Birds
3323	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3324	RSR	Required Supply Rate
3325	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3326	RSRI	Red Sands Research Institute
3327	RTA	Road traffic accident (British)
3328	RTBF	Radio-Télévision belge de la Communauté française
3329	RTF	Rich Text Format
3330	RTFM	the Fucking/Fine Manual
3331	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3332	RTI	Run-Time Infrastructure (Simulation)
3333	RTL	see entry
3334	RTP	Real-time Transport Protocol
3335	RTS	see entry
3336	RTT	Round Trip Timing
3337	RU	Russia (ISO 3166 digram)
3338	Ru	Ruthenium
3339	RUC	Royal Ulster Constabulary
3340	RUS	Russia (ISO 3166 trigram)
3341	RUSI	Royal United Services Institute for Defence Studies
3342	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3343	RWA	Rwanda (ISO 3166 trigram)
3344	RWH	Rain Water Harvesting
3345	RWR	Radar Warning Receiver
3346	RWS	Remote Weapon Station
3347	Rx	Medical prescription (possibly from Latin 'recipere','to take': see entry)
3348	RX	Receive
3349	SARS	Severe Acute Respiratory Syndrome
3350	SBNO	Standing but not operating (in reference to amusement parks)
3351	SCOTUS	Supreme Court of the United States
3352	SCROTUS	So-called Ruler of the United States
3353	SDHC	Secure Digital High Capacity
3354	SDXC	Secure Digital eXtended Capacity
3355	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3356	SGOTUS	Second Gentleman of the United States
3357	SHO	Showtime (see also sho.com)
3358	sic	sic erat scriptum (Latin for 'thus was it written')
3359	SIRI	Service Interface for Real Time Information
3360	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3361	SLOTUS	Second Lady of the United States (the vice president's wife)
3362	SoCon	Southern Conference (U.S. college sports)
3363	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)
3364	SSD	South Sudan (ISO 3166 trigram)
3365	SSDC	U.S. Space and Strategic Defense Command
3366	STB	Surface Transportation Board[2]
3367	SWAC	Southwestern Athletic Conference
3368	SWAN	System for Wearable Audio Navigation
3369	SWAT	Special Weapons And Tactics
3370	SWF	Single White Female
3371	Ta	Tantalum
3372	TAACOM	U.S. Theater Army Area Command
3373	TAADCOORD	Theatre Army Air Defence Co-ordinator
3374	TAAR	Trace Amine-Associated Receptor
3375	TAC	U.S. Tactical Air Command (1946-1992)
3376	TACAN	Tactical Air Navigation
3377	TACCO	Tactical Coordinator
3378	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3379	TACDAR	Tactical Detection And Reporting
3380	TACSOP	Tactical SOP (Standing Operating Procedure)
3381	TADIL	Tactical Digital Information Link
3382	TAI	Target[ed] Area of Interest
3383	TAJ	Tom and Jerry
3384	TAJT	Tom and Jerry Tales
3385	TALES	Technical Advice and Lexicon for Enabling Simulation
3386	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3387	TANP	Terrain-Aware Network Planner
3388	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)
3389	TAPPS	Texas Association of Private and Parochial Schools
3390	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3391	TAS	Tasmania (postal symbol)
3392	TASER	Thomas A. Swift's Electric Rifle
3393	TASM	Tactical Air-to-Surface Missile
3394	TAT	Tourism Authority of Thailand
3395	TATP	TriAcetone TriPeroxide
3396	TATT	Tired All The Time (medical diagnosis in-joke)
3397	Tb	Terbium
3398	TB	Tuberculosis
3399	TBA	to be announced
3400	TBBPA	TetraBromoBisPhenol-A
3401	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3402	TBF	to be fair
3403	TBH	To Be Honest
3404	TBL	Turkish Basketball League
3405	TBS	Turner Broadcasting System
3406	TBT	Tributyltin
3407	Tc	Technetium
3408	TCAA	Top Counter-Assault Agents
3409	TCAS	Traffic Collision Avoidance System
3410	TCCCS	Tactical Command,Control and Communication System
3411	TCD	Chad (ISO 3166 trigram)
3412	TCHD	Truck Cargo Heavy Duty
3413	TCL	Tool Command Language
3414	TCM	Turner Classic Movies
3415	TCU	Texas Christian University
3416	TCW	Tasty Coma Wife
3417	TCWMS	Tele-Center Workforce Management System
3418	TDA	The Disney Afternoon
3419	TDL	Tactical Data Link
3420	TDM	Time-Division Multiplexing
3421	TDMA	Time Division Multiple Access
3422	TDP	Technology Demonstration Programme
3423	TDRS	Tracking Data and Relay Satellite
3424	Te	Tellurium
3425	TEAL	Tasman Empire Airways Limited
3426	Team	Together everyone achieves more
3427	TEAMS	The East African Marine System (fiber optic cable)
3428	TED	Technology Entertainment Design prize
3429	TENCAP	Tactical Exploitation of National Capabilities
3430	TERS	Tactical Event Reporting System
3431	TES	Tactical Event System
3432	TEST	Thesaurus of Engineering and Scientific Terms
3433	TEU	Twenty-foot equivalent unit (cargo capacity)
3434	TeVeS	Tensor Vector Scalar theory
3435	TFMPP	Trifluorophenylmethylpiperazine
3436	TFR	Total Fertility Rate
3437	TFT	Thin-Film Transistor
3438	Tg	Teragram
3439	TG	Togo (ISO 3166 digram)
3440	TGO	Togo (ISO 3166 trigram)
3441	Th	Thorium
3442	THA	Thailand (ISO 3166 trigram)
3443	THAAD	Terminal High Altitude Area Defence
3444	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3445	THEL	Tactical High Energy Laser ACTD
3446	THG	Tetrahydrogestrinone
3447	TIA	Total Information Awareness initiative
3448	TIA	Transient Ischemic Attack
3449	TIALD	Thermal Imaging and Airborne Laser Designation
3450	TIBS	Tactical Information Broadcast System
3451	TIC	Troops In Contact
3452	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3453	TINC	There Is No Cabal
3454	TIP	Thermal Identification Panel
3455	tits	Toes in the Sand
3456	TJD	Truncated Julian Day
3457	TJK	Tajikistan (ISO 3166 trigram)
3458	TKL	Tokelau (ISO 3166 trigram)
3459	TKM	Turkmenistan (ISO 3166 trigram)
3460	Tl	Thallium
3461	TLA	Three-Letter Abbreviation/Acronym
3462	TLAM	Tomahawk Land Attack Missile
3463	TLATOJL	The Life and Times of Juniper Lee
3464	TLPM	T1 Line Performance Monitor
3465	Tm	Terametre
3466	TMAP	Texas Medication Algorithm Project
3467	TMC	The Movie Channel
3468	TMD	Theatre Missile Defence
3469	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3470	TMI	Too Much Information
3471	TMJ	TemporoMandibular Joint (syndrome)
3472	TMNT	Teenage Mutant Ninja Turtles
3473	TMPG	Transparent Multi-Platform Gateway
3474	TMR	Twin Main Rotors (helicopter type)
3475	TMS	Transcranial Magnetic Stimulation
3476	TMT	Thirty Meter Telescope
3477	TMTOWTDI	There's Than One Way To Do It (from Perl)
3478	TNA	Total Nonstop Action Wrestling
3479	TNO	Trans-Neptunian Object
3480	TOBS	Time of OBServation
3481	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3482	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3483	TOGS	Thermal Observation Gunnery Sight
3484	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3485	TON	Tonga (ISO 3166 trigram)
3486	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
3487	TOT	Time On Target
3488	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3489	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3490	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3491	TPI	The point is
3492	TPO	Thrombopoietin
3493	TPS	The Pennington School
3494	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3495	TQ	Top Qualifier (similar to Pole Position in car racing)
3496	TRA	Technology iness Assessment
3497	TRAC	(U.S. Army) TRADOC Analysis Center
3498	TRACON	Terminal Radar Approach Control
3499	TRADOC	(U.S. Army) Training and Doctrine Command
3500	TRANSCOM	U.S. Transportation Command
3501	TRAP	Tactical Receive equipment and related Applications
3502	TRASANA	TRADOC Systems Analysis Agency
3503	TRD	Towed Radar Decoy
3504	TRIGAT	Third Generation Antitank (missile)
3505	TRL	Technology readiness level
3506	Trp	Troop
3507	TRU	Transuranic
3508	TRUEX	Training in Urban Environment Exercise
3509	TRW	Thompson Ramo Wooldridge Inc.
3510	Ts	Terasecond
3511	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3512	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3513	TSEC	Transmission Security Encryption Code
3514	TSL	Transportation Security Laboratory
3515	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3516	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3517	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3518	TSR	Terminate and Stay Resident
3519	TSSIA	The Subject Says It All
3520	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3521	TTCT	Torrance Tests of Creative Thinking
3522	TTFN	Ta Ta For Now
3523	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3524	TTO	Trinidad and Tobago (ISO 3166 trigram)
3525	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3526	TTTEAF	Thomas the Tank Engine and Friends
3527	TTY	TeleTYpewriter (Printer)
3528	TTYL	To You Later (Internet slang)
3529	TTZ	Tetrazolium
3530	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3531	TUC	Trades Union Congress
3532	TUG	TeX Users Group
3533	TUI	Text-based user interface (cf. CLI),among other uses
3534	TUM	Technische Universität München (Germany)
3535	TUN	Tunisia (ISO 3166 trigram)
3536	TUNS	Technical University of Nova Scotia
3537	TUR	Turkey (ISO 3166 trigram)
3538	TUSK	Tank Urban Survival Kit
3539	TUV	Tuvalu (ISO 3166 trigram)
3540	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3541	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3542	TVA	Tennessee Valley Authority
3543	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3544	TVR	TreVor (Wilkinson) Racing
3545	TVS	Tornado vortex signature
3546	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3547	TWAIN	Technology Without An Interesting Name
3548	TWE	Trans World Entertainment
3549	TWI	The Welding Institute
3550	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
3551	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3552	TWP	Technical Working Paper
3553	TWS	Thermal Weapon Sight,Track While Scan
3554	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3555	TXV	Thermostatic Expansion Valve
3556	TYT	Take Your Time,Internet chat abbreviation
3557	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3558	TZA	Tanzania (ISO 3166 trigram)
3559	TZC	Tetrazolium chloride
3560	U	Uranium
3561	UA	Unit of Action
3562	UAAP	University Athletic Association of the Philippines
3563	UAB	University of Alabama at Birmingham
3564	UAP	Unidentified Areal Phenomana
3565	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3566	UBC	United Baptist Church,University of British Columbia
3567	UBI	Universal Basic Income
3568	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3569	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3570	UCBSA	United Cricket Board of South Africa
3571	UCF	University of Central Florida
3572	UCLA	University of California at Los Angeles
3573	UCLES	University of Cambridge Local Examinations Syndicate
3574	UCR	University of California at Riverside
3575	UCR	University of Costa Rica
3576	UCS	Union of Concerned Scientists
3577	UCSB	University of California at Santa Barbara
3578	UCSD	University of California at San Diego
3579	UDAS	Uppsala-DLR Asteroid Survey
3580	UDDI	Universal Description,Discovery and Integration
3581	UDTS	Uppsala-DLR Trojan Survey
3582	UE	Unit of Employment
3583	UEFA	Union of European Football Associations
3584	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3585	UFC	Ultimate Fighting Championship
3586	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3587	UGV	Unmanned Ground Vehicle
3588	UHF	Ultra High Frequency
3589	UHMW	Ultra-High Molecular Weight
3590	UHRB	Ultra-High Resolution Building (simulation)
3591	UIC	University of Illinois at Chicago
3592	UID	User ID
3593	UIUC	University of Illinois at Urbana-Champaign
3594	UJTL	Universal Joint Task List
3595	UKIP	United Kingdom Independence Party
3596	UKR	Ukraine (ISO 3166 trigram)
3597	UL	Underwriters Laboratories
3598	ULF	Ultra Low Frequency
3599	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3600	UMCP	Unit Maintenance Collection Point
3601	UMES	University of Maryland Eastern Shore
3602	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3603	UMIST	University of Manchester Institute of Science and Technology
3604	UMTS	Universal Mobile Telecommunications System
3605	UN	United Nations
3606	UNABOM	University and airline bomber (FBI case name)
3607	UNAIDS	Joint United Nations Programme on HIV/AIDS
3608	UNAMSIL	United Nations Mission in Sierra Leone
3609	UNCF	United Negro College Fund
3610	UNCLOS	United Nations Convention on the Law of the Sea
3611	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3612	UNCTAD	United Nations Conference on Trade and Development
3613	UNDCP	United Nations Drug Control Programme
3614	UNDE	Union of National Defence Employees (Canada)
3615	UNDP	United Nations Development Programme
3616	UNEP	United Nations Environment Programme
3617	UNFCCC	United Nations Framework Convention on Climate Change
3618	UNFICYP	United Nations Peacekeeping Force in Cyprus
3619	UNGEGN	United Nations Group of Experts on Geographical Names
3620	UNHCR	United Nations High Commission (er) for Refugees
3621	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3622	UNICRI	United Nations Interregional Crime and Justice Research Institute
3623	UNIDO	United Nations Industrial Development Organization
3624	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3625	UNLV	University of Nevada,Las Vegas
3626	UNMIK	United Nations Interim Administration Mission in Kosovo
3627	UNOSOM	United Nations Operations in Somalia
3628	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3629	UNRISD	United Nations Research Institute for Social Development
3630	UNSM	Union of Nova Scotian Municipalities
3631	UNTAC	United Nations Transitional Authority in Cambodia
3632	UNTAET	United Nations Transitional Administration in East Timor
3633	UNU	United Nations University
3634	UPdM	Università Popolare della Multimedialità
3635	UPF	Universitat Pompeu Fabra (Catalan for: 'Pompeu Fabra University')
3636	UPI	United Press International
3637	UPN	United Paramount Network
3638	UPU	Universal Postal Union
3639	UR	Soviet Union (NATO country code,obsolete 1992)
3640	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3641	URD	User Requirements Document
3642	URI	University of Rhode Island
3643	URU	Uruguay (IOC and FIFA trigram, but not ISO 3166)
3644	URY	Uruguay (ISO 3166 trigram)
3645	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3646	USA	United States of America (also ISO 3166 trigram), United States Army
3647	USAADAC	U.S. Army Air Defense Artillery Center,Fort Bliss,Texas
3648	USAARMC	U.S. Army ARMor Center,Fort Knox,Kentucky
3649	USAAVNC	U.S. Army AViatioN Center,Fort Rucker,Alabama
3650	USAFSPC	U.S. Air Force Space Command
3651	USAIC	U.S. Army Infantry Center,U.S. Army Intelligence Center
3652	USAID	United States Agency for International Development
3653	USAP	Union Sportive des Arlequins Perpignanais,United States Antarctic Program
3654	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3655	USAREUR	United States Army Europe
3656	USB	Universal Serial Bus
3657	USC	United States Code,University of South Carolina,University of Southern California
3658	USCG	United States Coast Guard
3659	USCINCSPACE	United States Commander in Chief,Space Command
3660	USDA	United States Department of Agriculture
3661	USDI	United States Department of the Interior
3662	USDOE	United States Department of Energy
3663	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3664	USEC	United States Enrichment Corporation
3665	USFL	United States Football League
3666	USFWS	United States Fish and Wildlife Service
3667	USGS	United States Geological Survey
3668	USIA	United States Information Agency
3669	USJFCOM	United States Joint Forces Command
3670	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
3671	USMNT	United States men's national (soccer) team
3672	USNA	United States National Arboretum,United States Naval Academy
3673	USNB	United States Naval Base
3674	USNG	United States National Grid
3675	USNH	United States Naval Hospital
3676	USNI	United States Naval Institute
3677	USNO	U.S. Naval Observatory
3678	USNOFS	United States Naval Observatory Flagstaff Station
3679	USNP	United States Newspaper Program
3680	USNR	United States Navy Reserve
3681	USNS	United States Naval Ship
3682	USNY	University of the State of New York (usually pronounced 'use-knee')
3683	USNZ	University Sport New Zealand
3684	USPS	United States Postal Service
3685	USPTO	United States Patent and Trademark Office
3686	USR	User
3687	USS	United States ship (sometimes meaningless; see Star Trek)
3688	USSPACECOM	United States Space Command
3689	USSR	Union of Soviet Socialist Republics
3690	UST	Underground Storage Tank
3691	USTRANSCOM	United States Transportation Command
3692	USWNT	United States women's national (soccer) team
3693	UT	Universal Time
3694	UTEP	University of Texas at El Paso (pronounced you-tep)
3695	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3696	UUA	Unitarian Universalist Association
3697	UUID	Universally Unique Identifier (see also GUID)
3698	UUV	Unmanned Underwater Vehicle
3699	UW	University of Washington
3700	UWO	University of Western Ontario
3701	UWT	Under Water Telephone
3702	UWTG	Under Water Tug
3703	UWW	United World Wrestling
3704	UXO	Unexploded Ordnance
3705	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3706	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3707	UZB	Uzbekistan (ISO 3166 trigram)
3708	VACIS	Vehicle And Container Inspection System
3709	VACIS	Victorian Ambulance Clinical Information System
3710	VANOS	Variable Nockenwelle System
3711	VAO	Vienna Art Orchestra
3712	VAT	Vatican City-State (ISO 3166 trigram)
3713	VBA	Visual Basic for Applications
3714	vCJD	Variant Creutzfeldt-Jakob Disease
3715	VCNO	(U.S.) Vice Chief of Naval Operations
3716	VCofS	Vice Chief of Staff
3717	VCR	Video cassette recorder
3718	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3719	VDFS	VisualSVN Distributed File System (VDFS)
3720	VE	Venezuela (ISO 3166 digram)
3721	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3722	VEN	Venezuela (ISO 3166 trigram)
3723	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3724	VfD	s for deletion (used in Wikipedia)
3725	VFM	Value For Money
3726	VFMO	Very Fast Moving Object (astronomy)
3727	VFT	Virtual Function Table
3728	VFW	Veterans of Foreign Wars
3729	VG	British Virgin Islands (ISO 3166 digram)
3730	VGB	British Virgin Islands (ISO 3166 trigram)
3731	VH1	Video Hits One
3732	VHF	Very High Frequency
3733	VIA	Versatile Interface Adapter
3734	VIDS	Visual Information Display System
3735	VII	7 (in Roman numerals)
3736	VIII	8 (in Roman numerals)
3737	VIN	Vehicle Identification Number (ISO 3779)
3738	VIP	Very Important Person
3739	VISCII	VIetnamese Standard Code for Information Interchange
3740	VIT	Vellore Institute of Technology
3741	VIVO	Video In Video Out
3742	VJ	Video Jockey
3743	VLAD	Vertical Line Array DIFAR
3744	VLBA	Very Long Baseline Array
3745	VLF	Very Low Frequency
3746	VLIW	Very Long Instruction Word
3747	VLPFC	VentroLateral PreFrontal Cortex
3748	VLPMC	VentroLateral PreMotor Cortex
3749	VLSI	Very-large-scale integration
3750	VM	Vietnam (FIPS 10-4 country code)
3751	VMF	Marine Fighting Squadron of the United States Marine Corps
3752	VMF	Variable Message Format
3753	VMN	VentroMedial Nucleus (neurophysiology)
3754	VN	Vietnam (ISO 3166 digram)
3755	VNIR	Visible and Near InfraRed
3756	VNM	Vietnam (ISO 3166 trigram)
3757	VNS	see entry
3758	VOA	Voice of America
3759	VOIP	Voice Over Internet Protocol
3760	VOLT	Visual OpenType Layout Tool
3761	VON	Victorian Order of Nurses
3762	VOR	Voice of Russia
3763	VOX	Voice Operated oscillator
3764	VPOTUS	Vice President of the United States
3765	VR	Virtual Reality
3766	VRSG	Virtual Reality Scene Generator
3767	VSAT	Very Small Aperture Terminal ('vee-satt')
3768	VSHORAD	Very Short Range Air Defence
3769	VSO	Voluntary Services Overseas
3770	VSR	Very Special Relativity
3771	VTC	Video Tele-Conference
3772	VTEC	Variable valve Timing and Electronic lift Control
3773	VU	Vanuatu (ISO 3166 digram), Vedanta University
3774	VUB	Vrije Universiteit Brussel (Belgian university)
3775	VUT	Vanuatu (ISO 3166 trigram)
3776	VV	Via Voice,Village Voice
3777	VVAF	Vietnam Veterans of America Foundation
3778	VW	Volkswagen
3779	VZ	Verizon Communications (NYSE code)
3780	W	Tungsten (from German Wolfram),Watt,West
3781	W3C	World Wide Web Consortium
3782	WA	Namibia (from West Africa),Washington state (postal symbol),Western Australia (postal symbol),World Archery (Federation)
3783	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3784	WAAF	Women's Auxiliary Air Force (World War II UK)
3785	WAC	Western Athletic Conference,Women's Auxiliary Corps (World War II Canada),Women's Army Corps (World War II U.S.)
3786	WACC	Weighted Average Cost of Capital (accounting)
3787	WACS	What-A-Cartoon! Show
3788	WAD	Weapons Alert Designator
3789	WAGGGS	World Association of Girl Guides and Girl Scouts
3790	WAGs	Wives And Girlfriends (most notably of England national football team players at the 2006 FIFA World Cup,although the term existed earlier)
3791	WAL	see entry
3792	WAPIMA	What a pain in my ass
3793	WAR	With All Respect
3794	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3795	WAYP	White And Yellow Pages
3796	WB	Warner Bros.,Welcome Back (Internet shorthand)
3797	Wb	Weber
3798	WBA	Warner Bros. Animation,West Bromwich Albion (F.C.),World Boxing Association
3799	WBC	World Boxing Council
3800	WBE	Work Breakdown Element
3801	WBO	World Boxing Organization
3802	WC	Water Closet,Winston Churchill,World Cup (sports)
3803	WCBO	World Chess Boxing Organisation
3804	WCBP	World Center for Birds of Prey
3805	WCL	World Confederation of Labour
3806	WCS	Weapon Control Status,Wildlife Conservation Society
3807	WCW	World Championship Wrestling
3808	WDC	Western Design Center,World Data Center
3809	WDIN	Wildlife Disease Information Node
3810	WDWR	Walt Disney World Resort
3811	WEBS	Weapon Effectiveness Battle Simulation
3812	WEC	World Extreme Cagefighting
3813	WEEE	Waste Electrical and Electronic Equipment
3814	WEF	World Economic Forum
3815	WEM	West Edmonton Mall
3816	WEU	Western European Union
3817	WEZ	Weapon Engagement Zone
3818	WF	Wallis and Futuna Islands (ISO 3166 digram)
3819	WFC	Women's Forage Corps (World War II UK)
3820	WFD	Weapon of Focused Destruction
3821	WFF	Wallops Flight Facility
3822	WFI	Water for Injection
3823	WFH	Working from home
3824	WFP	World Food Program
3825	WFZ	Weapons Free Zone
3826	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3827	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3828	WHI	Women's Health Initiative
3829	WHIP	Walks plus hits per inning pitched
3830	WHO	World Health Organisation
3831	WHS	(U.S.) Washington Headquarters Services
3832	WI	Western Sahara (FIPS 10-4 country code),Wisconsin (postal symbol),Women's Institute
3833	WIA	Wounded In Action,Wireless Institute of Australia (Amateur Radio)
3834	WIIFM	What's in it for me?
3835	WIMP	Weakly Interacting Massive Particle, Windows,Icons,Menus,Pointers
3836	WIP	Work In Progress
3837	WIPO	World Intellectual Property Organization
3838	WIPP	[Nuclear] Waste Isolation Pilot Plant
3839	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3840	WK	Wake Island (ISO 3166 digram,obsolete 1986)
3841	WKYP	Will Keep You Posted
3842	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3843	WLB	Women's Land Brigade (World War II Canada)
3844	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3845	WLOG	Without Loss Of Generality (see WOLOG)
3846	WLTP	Worldwide harmonized Light vehicles Test Procedure
3847	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3848	WMANUS	West Midlands Area National Union of Students
3849	WMD	World Movement for Democracy
3850	WMI	Wildlife Management Institute
3851	WMO	World Meteorological Organization
3852	WNA	World Nuclear Association
3853	WNF	Will Not Fix
3854	WNIT	Women's National Invitation Tournament
3855	WNSD	What's New,Scooby-Doo?
3856	WNW	West North-West
3857	WO	Warrant Officer
3858	WOF	Width of Fabric
3859	WOFT	Waste Of Fucking Time
3860	WOFTAM	Waste Of Fucking Time And Money
3861	WOI	Wheels Of Italy
3862	WOM	Write Only Memory
3863	WOS	Wilson Ornithological Society
3864	WOSM	World Organization of the Scout Movement, Worldwide Oil Spill Model
3865	WOT	Waste Of Time
3866	WP	White Phosphorus (ammunition)
3867	WPB	War Production Board during World War II
3868	WPE	World Pork Expo
3869	WPK	Wider Peacekeeping
3870	WPT	World Poker Tour,World Premiere Toons
3871	WR	Wide Receiver (football)
3872	WRAC	Women's Royal Army Corps (World War II UK)
3873	WRAIR	Walter Reed Army Institute of Research
3874	WRBWWRM	We Best What We Most
3875	WRC	World Rally Championship
3876	WRC	World Religions Conference
3877	WRNG	Warning
3878	WRS	Worldwide Reference System
3879	WRT	With respect to (especially in fields such as Mathematics)
3880	WRT	NHS Workforce Review Team
3881	WRT	The Linksys routers whose model name start with 'WRT'
3882	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3883	WRT	Wallace Roberts & Todd,LLC (Urban Planning and Design)
3884	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3885	WRT	Wholesale,Trade,Retail sector,category in employment and economics statistics
3886	WRT	Wireless Receiver/Transmitter (computer networks/IT)
3887	WRT	Wireless Ronin Technologies (digital signage)
3888	WRT	World Rally Team
3889	WRT	Writer Response Theory
3890	WRVS	Women's Royal Voluntary Service,now only known by the acronym (UK)
3891	WS	Samoa (ISO 3166 and FIPS 10-4 country code digram; from the country's former name of Western Samoa),Writer to the Signet (a Scottish solicitor)
3892	WSC	Weapon System Catalogue
3893	WSDL	Web Services Description Language
3894	WSJ	(The) Wall Street Journal
3895	WSL	White Star Line (shipping company),Women's Super League,used to describe England's top women's association football league and top women's rugby union competition,Workers' Socialist League (UK political party)
3896	WSROC	Western Sydney Regional Organisation of Councils
3897	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3898	WSTC	Women Signallers Territorial Corps (World War II UK)
3899	WSW	West South-West
3900	WTB	Wales Tourism Board,Warenterminbörse Hannover
3901	WTC	World Trade Center
3902	WTF	What the fuck?; also What a Terrible Failure (android)
3903	WTFH	What The Fucking Hell
3904	WTH	What the Hell
3905	WTO	World Trade Organization
3906	WU	Wabash University,Washington University in St. Louis,Western Union,Windows Update,Work unit,WU Wien (German Wirtschaftsuniversität Wien,Vienna University of Economics and Business Administration)
3907	WUBU2	What you been up to
3908	WUU2	What you up to (Internet slang popular with teenagers)
3909	WV	West Virginia (postal symbol)
3910	WVA	World Veterinary Association
3911	WVIAC	West Virginia Intercollegiate Athletic Conference
3912	WVR	Women's Volunteer Reserve (World War II UK)
3913	WVSC	Women's Volunteer Service Corps (World War II Canada)
3914	WVU	West Virginia University
3915	WW	see entry
3916	WWE	World Wrestling Entertainment
3917	WWI	World War I
3918	WWII	World War II
3919	WWIII	World War III
3920	WWJD	What would Jesus do?
3921	WWS	Wheaton Warrenville South High School
3922	WWWF	World Wide Wrestling Federation
3923	WXO	Weather [Executive] Officer
3924	WY	Wyoming (postal symbol)
3925	WZ	Swaziland (FIPS 10-4 country code)
3926	XBML	eXtended Business Modelling Language
3927	XC	Ninety (in Roman numerals)
3928	XCBL	XML Common Business Library
3929	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3930	Xe	Xenon
3931	XFA	XML Forms Architecture
3932	XFC	Xtreme Fighting Championships
3933	XFD	Fighter aircraft made by Douglas
3934	Xfe	X File Explorer
3935	XFF	X-Forwarded-For
3936	XFG	Exfoliation glaucoma
3937	XFR	Automobile made by Jaguar
3938	XFT	X FreeType interface library
3939	XG	Automobile made by Hyundai
3940	XGA	Extended Graphics Array
3941	XGP	Extreme Game Player
3942	XHTML	eXtensible Hypertext Markup Language
3943	XI	Eleven (in Roman numerals)
3944	XII	Twelve (in Roman numerals)
3945	XIII	Thirteen (in Roman numerals)
3946	XIV	Fourteen (in Roman numerals)
3947	XIX	Nineteen (in Roman numerals)
3948	XJS	Automobile made by Jaguar
3949	XKB	X keyboard extension
3950	XKE	Automobile made by Jaguar
3951	XKR	Automobile made by Jaguar
3952	XML	eXtensible Markup Language
3953	XMSF	eXtensible Modelling and Simulation Framework
3954	XNA	X-No-Archive,Xeno Nucleic Acid
3955	XNC	X Northern Captain
3956	XNU	X is Not Unix
3957	XP	eXperience Point (role-playing games)
3958	XQJ	XQuery API for Java™
3959	XRAY	X-Ray
3960	XRML	eXtensible Rights Markup Language
3961	XS	Xiaolin Showdown
3962	XSL	eXtensible Style Language
3963	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3964	XUL	XML User Interface Language
3965	XV	Fifteen (in Roman numerals)
3966	XVI	Sixteen (in Roman numerals)
3967	XVII	Seventeen (in Roman numerals)
3968	XVIII	Eighteen (in Roman numerals)
3969	XWF	Xcitement Wrestling Federation
3970	XX	Twenty (in Roman numerals)
3971	Xyl	Xylobium
3972	XZN	Triple square screw driver
3973	y	Yocto-
3974	Y2K	Year Two Thousand
3975	yA	Yoctoampere
3976	Ya	Yottayear
3977	YaBPr	Yet another Brother Pat rant
3978	YABSLAG	Yet another boy singing like a girl
3979	YAC	Youth-Adult Committee
3980	YAFLA	Yet Another Five Letter Abbreviation
3981	YAP	Young Aspiring Professional
3982	YB	Youcef Benzouada (Southern Algerian name)
3983	Yb	Ytterbium
3984	yC	Yoctocoulomb
3985	YC	Yottacoulomb
3986	YDS	Yosemite Decimal System (climbing)
3987	YE	Yemen (ISO 3166 digram)
3988	YEM	Yemen (ISO 3166 trigram)
3989	yF	Yoctofarad
3990	YF	Yottafarad
3991	yg	Yoctogram
3992	Yg	Yottagram
3993	YGCO	Yamaneko Group of Comet Observers
3994	Ygo	Yu-Gi-Oh!
3995	yH	Yoctohenry
3996	YH	Yottahenry
3997	YHBT	You Have Been Trolled
3998	YHII	You Have It Inside
3999	YHS	Ya Hoor sur!
4000	Yi	Yobi
4001	Yippie	Youth International Party + suffix
4002	yJ	Yoctojoule
4003	YJ	Yottajoule
4004	yK	Yoctokelvin
4005	YK	Yottakelvin
4006	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
4007	yL	Yoctolitre
4008	YL	Yottalitre
4009	ym	Yoctometre
4010	Ym	Yottametre
4011	YMMD	You Make My Day
4012	yN	Yoctonewton
4013	YN	Yottanewton
4014	YOLO	You Only Live Once
4015	YPA	Yards per Pass Attempt (football statistic)
4016	YPIO	Your Problem Is Obvious
4017	YPO	Young Presidents' Organization
4018	ys	Yoctosecond
4019	yS	Yoctosiemens
4020	Ys	Yottasecond
4021	YS	Yottasiemens
4022	YSI	Young Scots for Independence
4023	yT	Yoctotesla
4024	YTD	Year-To-Date
4025	YTM	Yield to Maturity
4026	YTS	Youth Training Scheme
4027	YTT	Yoshi Topsy-Turvy
4028	Yuppie	Young Urban Professional + suffix
4029	yV	Yoctovolt
4030	YV	Yottavolt
4031	yW	Yoctowatt
4032	YW	Yottawatt
4033	YYH	YuYu Hakusho
4034	z	Zepto
4035	Z	Zetta
4036	zA	Zeptoampere
4037	ZAF	South Africa (ISO 3166 trigram)
4038	ZAMS	Zero age main sequence
4039	ZAS	Zylinder Abschaltung System
4040	ZBT	Zero-Balance Transfer (accounting)
4041	zC	Zeptocoulomb
4042	ZC	Zettacoulomb
4043	ZCM	(n) ZENworks Configuration Management
4044	ZCMK	Zone Control Master Key
4045	ZCU	Zimbabwe Cricket Union
4046	\a	Atto-