PowerShell/Data/Abbr/general.csv

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