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	CITES	Convention on International Trade in Endangered Species (of Wild Fauna and Flora) ('sigh-tease')
755	CIV	Côte d'Ivoire (ISO 3166 trigram)
756	CIVETS	Colombia,Indonesia,Vietnam,Egypt,Turkey,South Africa (economics)
757	CIVPOP	Civilian Population
758	CIWS	Close-In Weapon System
759	CJ	Cayman Islands (FIPS 10-4 country code),Criminal Justice
760	CJC	Canadian Jewish Congress,Cold Junction Compensation
761	CJCS	Chairman of the Joint Chiefs of Staff
762	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
763	CJO	Chief of Joint Operations
764	CJTF	Combined Joint Task Force
765	CK	Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
766	CKA	commonly known as, Canada Kicks Ass
767	CKND	Codename: Kids Next Door
768	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
769	Cl	Chlorine
770	CLA	Clutterers Anonymous
771	CLEC	Competitive Local Exchange Carrier
772	CLEMARS	California Law Enforcement Mutual Aid Radio System
773	CLIC	Compact LInear Collider
774	CLO	Cornell Lab of Ornithology
775	CLOS	Command to Line-Of-Sight (missile control system)
776	CLPFC	CentroLateral PreFrontal Cortex
777	CLRP	College Loan Repayment Program
778	CM	Cameroon (FIPS 10-4 country code; ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
779	Cm	Curium
780	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
781	CMHC	Canada Mortgage and Housing Corporation
782	CMIIAW	Correct me if I am wrong
783	CMIS	Common management information service
784	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
785	CMLL	Consejo Mundial de Lucha Libre (Spanish,'Worldwide Wrestling Council'—Mexican professional wrestling promotion)
786	CMM	Capability Maturity Model
787	CMMC	Corps Materiel Management Centre
788	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
789	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
790	CMP	Common [Operating/Operational] Maritime Picture
791	CMPD	Charlotte Mecklenburg Police Department
792	CMPD	Chronic Myeloproliferative Disease
793	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
794	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
795	CMT	Country Music Television
796	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
797	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)
798	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
799	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
800	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
801	CNBC	Consumer News and Business Channel
802	CND	Campaign for Nuclear Disarmament,Computer Network Defence
803	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
804	CNF	Cost and Freight
805	CNI	Clinical Nursing Intern
806	CNI	Communications,Navigation and Identification
807	CNN	Cable News Network,Cellular Nonlinear Network
808	CNV	Copy-Number Variable (genetics)
809	Co	Cobalt
810	COB	Close Of Business [day]
811	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
812	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
813	CoDA	Co-Dependents Anonymous
814	COGENT	Cognitive Objects within a Graphical EnviroNmenT
815	COIL	Chemical Oxygen Iodine Laser
816	COK	Cook Islands (ISO 3166 trigram)
817	COL	Colombia (ISO 3166 trigram)
818	COLA	Cost Of Living Adjustment
819	CONAD	U.S. Continental Air Defense Command
820	CONMEBOL	Confederación Sudamericana de Fútbol or Confederação Sul-Americana de Futebol (respectively Spanish and Portuguese for 'South American Football Confederation')
821	CONUS	Continental United States
822	COO	Chief Operating Officer
823	COPE	U.K. Committee On Publication Ethics
824	COPUS	U.K. Committee on the Public Understanding of Science
825	CORD	Common Operational Requirements Document
826	CORE	Consortium for Oceanographic Research and Education
827	COS	Cooper Ornithological Society
828	COSER	COoperative SERvice
829	CoT	Car of Tomorrow (former NASCAR race car design)
830	COTS	Commercial Off The Shelf
831	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
832	CPA	Certified Public Accountant
833	CPAC	Conservative Political Action Conference,Cable Public Affairs Channel ('see-pack')
834	CPCU	Certified Property Casualty Underwriter
835	CPD	Capabilities Production Document
836	CPE	Certificate of Proficiency in English
837	CPE	Certified Professional Ergonomist
838	CPF	Calibration Parameter File,Canadian Patrol Frigate
839	CPG	Clinical Practice Guideline
840	CPIM	Certification on Production and Inventory Management
841	CPIR	Computationally-Private Information Retrieval
842	CPON	Certified Pediatric Oncology Nurse
843	CPPCC	Chinese People's Political Consultative Conference
844	CPR	Canadian Pacific Railway
845	CPR	Cardiopulmonary resuscitation
846	CPSM	Continuous Phase Shift Modulation
847	CPSU	Communist Party of the Soviet Union
848	CPT	Contingency Planning Team
849	CPU	Contract Postal Unit
850	CPV	Cape Verde (ISO 3166 trigram)
851	CPX	Command Post eXercise
852	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
853	CQD	Close Quarters Drill (Morse distress code preceding SOS: CQ 'calling all stations',D 'Distress'; often incorrectly interpreted as 'Come Quick,Distress')
854	Cr	Chromium
855	CR	Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
856	CRAM	Combined Radiometric Correction Model
857	CRD	Capstone Requirements Document
858	CREB	Cyclic AMP-response Element Binding (protein)
859	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
860	CREN	Christian Real Estate Network Real Estate Association
861	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
862	CRIPL	Consolidated Remain-In-Place List
863	CRM	Cardiac Rhythm Management,Customer Relationship Management
864	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
865	CRP	Committee for the Re-Election of the President,Control and Reporting Post
866	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
867	CRTC	Canadian Radio-television and Telecommunications Commission
868	Cs	Caesium
869	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
870	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
871	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
872	CSG	Corps Support Group
873	CSI	see entry
874	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
875	CSIP	Commercial Stable Image Platform (AMD)
876	CSIS	Canadian Security Intelligence Service ('seessiss'),(U.S.) Center for Strategic & International Studies
877	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
878	CSL	U.K. Central Science Laboratory
879	CSPI	Center for Science in the Public Interest
880	CSR	Control Supply Rate
881	CSR	Corporate Social Responsibility
882	CSRC	Conflict Studies Research Centre
883	CSRF	Cross-Site Request Forgery
884	CST	Central Standard Time (UTC−6 hours)
885	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)
886	CTBT	Comprehensive [Nuclear] Test Ban Treaty
887	CTDB	Compact Terrain Data Base (file format)
888	CTGF	connective tissue growth factor
889	CTI	Co-operative Target Identification
890	CTIL	Critical Tracked Items List
891	CTIS	Central Tire Inflation System
892	CTMS	Clinical Trial Management System
893	CTSS	Compatible Time-Sharing System
894	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
895	CTVT	Canine Transmissible Venereal Tumour
896	Cu	Copper (Latin Cuprum)
897	CUB	Cuba (ISO 3166 trigram)
898	CUCV	Commercial Utility Cargo Vehicle
899	CUPS	Common Unix Printing System
900	CUPW	Canadian Union of Postal Workers
901	CUREA	Consortium for Undergraduate Research and Education in Astronomy
902	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
903	CUW	Curaçao (ISO 3166 trigram)
904	CV	curriculum vitae (résumé)
905	CVLL	Crypto Variable Logic Label
906	CVSD	Continuous Variable Slope Delta (modulation)
907	CVT	Continuously Variable Transmission
908	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer, or: Cook Islands (FIPS 10-4 territory code)
909	CWC	Chemical Weapons Convention
910	CWRU	Case Western Reserve University
911	CWS	Canadian Wildlife Service
912	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
913	CXR	Christmas Island (ISO 3166 trigram)
914	CY	Calendar year, or: Cyprus (ISO 3166 and FIPS 10-4 country code digram)
915	CYM	Cayman Islands (ISO 3166 trigram)
916	CZE	Czech Republic (ISO 3166 trigram)
917	CZF	(Christian Zombie Fan)
918	CZMA	(US) Coastal Zone Management Act
919	d	Deci
920	D	Deuterium
921	DAFIF	Digital Aeronautical Flight Information File
922	DAK	Disney's Animal Kingdom
923	DAO	Division Ammunition Officer
924	DARE	Drug Abuse Resistance Education
925	DARO	(U.S.) Defense Airborne Reconnaissance Office
926	DARPA	U.S. Defense Advanced Research Projects Agency
927	DAS	Defensive Aids Suite
928	DASD	(U.S.) Deputy Assistant Secretary of Defense
929	DASL	Datapoint's Advanced Systems Language
930	DAU	(U.S.) Defense Acquisition University
931	DAWN	(U.S.) Drug Abuse Warning Network
932	dB	Decibel
933	DB	Deutsche Bahn
934	Db	Dubnium
935	DBA	De Bellis Antiquitatis (miniature wargaming rules)
936	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
937	DBDO	Desert BDO
938	DBE	Dame Commander of the Order of the British Empire
939	DBF	Detection By Fire (weapon launch signature)
940	DBR	De Bellis Renationis (miniature wargaming rules)
941	DBRA	Davis-Bacon Related Acts
942	DBS	Direct Broadcast Services (television)
943	DCAA	(U.S.) Defense Contract Audit Agency
944	DCAS	Devon and Cornwall Archery Society
945	DCC	Dallas Christian College
946	DCD	[Organ] Donation after Cardiac Death
947	DCE	Data Communication Equipment
948	DCFC	Death Cab for Cutie
949	DCL	Disney Cruise Line
950	DCN	Deacon
951	DCOM	Disney Channel Original Movie
952	DCSOPS	Deputy Chief of Staff for Operations and plans
953	DCW	Digital Chart of the World
954	DCYSC	Discovery Channel Young Scientist Challenge
955	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
956	DDA	Deputy District Attorney
957	DDN	U.S. Defense Data Network
958	DDS	Doctor of Dental Surgery
959	DEA	Drug Enforcement Administration
960	DEA	Drug Enforcement Agency
961	DeCA	(U.S.) Defense Commissary Agency
962	DEFCON	Defence readiness condition
963	DELT	Dual Ended Line Test (ing)
964	DEPSECDEF	(U.S.) Deputy Secretary of Defense
965	DERA	British Defence Evaluation and Research Agency (1995-2001)
966	DES	Deep Ecliptic Survey
967	DEU	Germany (ISO 3166 trigram)
968	DFAS	(U.S.) Defense Finance and Accounting Service
969	DFCB	Data Format Control Book
970	DfID	UK Department for International Development
971	DFM	Discrete Field Model see Superluminal motion
972	DFM	Dynamic Flowgraph Methodology
973	DFSP	Dermatofibrosarcoma protuberans
974	DfT	UK Department for Transport
975	DGPS	Differential GPS
976	DGZ	Desired Ground Zero
977	DHA	DocosaHexaenoic Acid
978	DHHS	(U.S.) Department of Health and Human Services
979	DHRA	(U.S.) DoD Human Resources Activity
980	DHS	U.S. Department of Homeland Security
981	DHSS	UK Department of Health and Social Security
982	DHTFYSS	U.S. Don't Have Time For You Silly S****
983	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
984	DIA	U.S. Defense Intelligence Agency
985	DIAC	Department of Immigration and Citizenship (Australia) [1]
986	DiC	Design Island Centre (computing usually used in a teaching situation)
987	DICASS	DIrectional Command Activated Sonobuoy System
988	DIFAR	DIrectional Frequency Analysis and Recording
989	DIME	Dense Inert Metal Explosive
990	DIP	Dual In-line Package (electronics)
991	DIPS	Defense independent pitching statistics
992	DIR	Defence Industrial Research
993	DISCOM	Division Support Command
994	DISE	Deployable Intelligence Support Element
995	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
996	DITY	Do-It-Yourself
997	DIVAD	Division Air Defence
998	DIY	Do It Yourself
999	DJI	Djibouti (ISO 3166 trigram)
1000	DK	Denmark (ISO 3166 digram)
1001	DL	Dexter's Laboratory
1002	DLIC	Detachment Left-In-Contact
1003	DLIR	Depot-Level Inspection and Repair
1004	DLPMC	DorsoLateral PreMotor Cortex
1005	DLRP	Data Link Reference Point
1006	DLS	Deep Lens Survey
1007	DLSA	(U.S.) Defense Legal Services Agency
1008	DLSc	Diploma in Library Science
1009	DLTBGYD	Don't let the bastards grind you down
1010	DMC	(U.S.) Defense Management Council
1011	DMCA	Digital Millennium Copyright Act
1012	DMM	Digital Multimeter
1013	DMOC	Distributed Mission Operations Centre
1014	DMPA	(U.S.) Defense Medical Programs Activity
1015	DMPFC	DorsoMedial PreFrontal Cortex
1016	DMPK	Drug Metabolism and Pharmacokinetics
1017	DMRB	Design Manual for Roads and Bridges
1018	DMS	U.S. Defense Message System
1019	DMSP	U.S. Defense Meteorological Satellite Program
1020	DMT	Dimethyltryptamine
1021	DMV	Department of Motor Vehicles
1022	DMZ	DeMilitarized Zone
1023	DN	Deacon
1024	DNAW	Day Night All Weather
1025	DNDi	Drugs for Neglected Diseases initiative
1026	DNDO	U.S. Domestic Nuclear Detection Office
1027	DNK	Denmark (ISO 3166 trigram)
1028	DNM	Defence Nuclear Material
1029	DNR	Do Not Resuscitate
1030	DNS	Domain Name System
1031	DOB	Date Of Birth
1032	DOD	U.S. Department of Defense
1033	DODAF	U.S. Department of Defense Architectural Framework
1034	DoDD	U.S. Department of Defense Directive
1035	DoDEA	(U.S.) Department of Defense Education Activity
1036	DOE	U.S. Department of Energy
1037	DOHC	Dual-OverHead-Cam engine
1038	DOI	U.S. Department of the Interior
1039	DORA	Defence of the Realm Act
1040	DOS	Density of State
1041	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
1042	DotD	Deal of the Day (marketing gimmick)
1043	DOW	Died of Wounds
1044	DP	Division de production (Algerian petroleum company)
1045	DPA	UK Defence Procurement Agency
1046	DPCO	Double-Pole Change Over
1047	DPDT	Double-Pole Double-Throw
1048	DPI	Dots Per Inch
1049	DPICM	Dual-Purpose Improved Conventional Munition
1050	DPKO	UN Department for Peacekeeping Operations
1051	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
1052	DPPDB	Digital Point Positioning Database
1053	DPRK	Democratic People's Republic of Korea
1054	DPST	Double-Pole Single-Throw
1055	DRC	Democratic Republic of the Congo
1056	DRDC	Defence Research & Development Canada
1057	DREA	Defence Research Establishment Atlantic (obsolete 2002)
1058	DRES	Defence Research Establishment Suffield (obsolete 2002)
1059	DRET	Defence Research Establishment Toronto (obsolete 2002)
1060	DREV	Defence Research Establishment Valcartier (obsolete 2002)
1061	DRIC	(U.S.) Defense Research Information Center
1062	DRMS	(U.S.) Defense Revitalization and Marketing Service
1063	DRPR	Drawing Practices
1064	DRT	Document Related Technologies
1065	Ds	Darmstadtium
1066	DSAS	Disney Sing Along Songs
1067	DSB	(U.S.) Defense Science Board
1068	DSCS	U.S. Defense Satellite Communications System
1069	DSCSOC	DSCS Operations Center
1070	DSE	Dry Sheep Equivalent
1071	DSG	Direct-Shift Gearbox
1072	DSID	Dismounted Soldier Identification System
1073	DSL	Digital Subscriber Line
1074	DSLR	Digital single-lens reflex (camera)
1075	DSM	Diagnostic and Statistical Manual of Mental Disorders
1076	DSN	Deep Space Network
1077	DSPL	Design Specialists and Plans Language
1078	DSR	Deformed Special Relativity
1079	DST	Daylight Saving Time
1080	DSTL	British Defence Science and Technology Laboratory
1081	DSWA	(U.S.) Defense Special Weapons Agency
1082	DTA	Dental Technologists Association
1083	DTD	Digital Terrain Data
1084	DTG	Date-Time Group
1085	DTH	Direct To Home (television)
1086	DTI	UK Department of Trade and Industry
1087	DTIC	(U.S.) Defense Technical Information Center
1088	DTL	Diode-Transistor Logic (electronics)
1089	DTMF	Dual-tone multi-frequency signaling
1090	DTO	Disruptive Technology Office (was ARDA)
1091	DTR	Determine The Relationship
1092	DTSA	(U.S.) Defense Technology Security Administration
1093	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1094	DUSD	(U.S.) Deputy Under-Secretary of Defense
1095	DVLC	UK Driver and Vehicle Licencing Centre
1096	DVM	Doctor of Veterinary Medicine
1097	DVO	Direct View Optics
1098	DVOM	Digital Volt-Ohm Meter
1099	DVP	various meanings (disambiguation page)
1100	DW	Drum Workshop
1101	DWIM	Do What I Mean
1102	DWM	Doctor Who Magazine
1103	DWTS	Dancing with the Stars
1104	DWW	Down with Webster
1105	DXA	Dual-energy X-ray Absorptiometry
1106	DXM	DeXtroMethorphan
1107	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1108	Dy	Dysprosium
1109	DZA	Algeria (ISO 3166 trigram)
1110	E	East
1111	EABU	Explain Acronyms Before Use
1112	EAC	Echelons Above Corps
1113	EAPC	Euro-Atlantic Partnership Council
1114	EAST	Experimental Advanced Superconducting Tokamak
1115	EBD	Electronic Brake Distribution
1116	EBE	Extraterrestrial Biological Entity
1117	EBSA	Employee Benefits Security Administration
1118	EBW	Electron Beam Welding
1119	EBW	Exploding BridgeWire
1120	ECASS	European Centre for Analysis in the Social Sciences [1]
1121	ECBR	European Coalition for Biomedical Research
1122	ECCM	Electronic Counter-Counter-Measures
1123	ECFS	Electronic Case Filing System
1124	ECG	Electrocardiogram
1125	ECHR	European Convention on Human Rights
1126	ECJ	European Court of Justice
1127	ECL	Emitter Coupled Logic (electronics)
1128	ECommHR	European Commission on Human Rights
1129	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1130	ECT	ElectroConvulsive Therapy
1131	ECtHR	European Court of Human Rights
1132	EDA	European Defence Agency
1133	EDAC	Error Detection And Correction
1134	EDCS	Environmental Data Coding Specification
1135	EDH	Eastman Dental Hospital
1136	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1137	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1138	EEC	European Economic Community (predecessor of the EU)
1139	EEG	ElectroEncephaloGram
1140	EENT	End Evening Nautical Twilight
1141	EEO	Equal Employment Opportunity
1142	EEOC	(U.S.) Equal Employment Opportunity Commission
1143	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1144	EFF	Electronic Frontier Foundation
1145	EFL	English as a Foreign Language
1146	EFM	Enterprise Feedback Management
1147	EFOA	European Fuel Oxygenates Association
1148	EFSA	European Food Safety Authority
1149	EFT	Electronic Fund Transfer
1150	EFV	Expeditionary Fighting Vehicle
1151	EG	Egypt (ISO 3166 digram; FIPS 10-4 country code)
1152	EGCG	EpiGalloCatechin-3-Gallate
1153	EGIS	Erieye Ground Interface Segment
1154	EGRET	Energetic Gamma-Ray Experiment Telescope
1155	EGY	Egypt (ISO 3166 trigram)
1156	EHF	Extremely High Frequency
1157	EHR	Equipment History Record
1158	Ei	Exbi
1159	EI	Ireland (FIPS 10-4 country code; from Éire)
1160	EIA	Environmental Impact Assessment
1161	EIAH	Encyclopedia of Iranian Architectural History
1162	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1163	EIC	East India Company
1164	EICS	East India Company's Service
1165	eID	electronic ID
1166	EIRP	Effective Isotropic Radiated Power
1167	EIS	Environmental Impact Statement
1168	EJ	Exajoule
1169	EKG	Electrocardiogram (from German Elektrokardiogramm)
1170	EKMS	Electronic Key Management System
1171	EL	Exalitre
1172	ELINT	Electronic Intelligence
1173	ELL	English Language Learner
1174	ELM	Edge-Localised Mode (plasma physics)
1175	ELO	Electric Light Orchestra
1176	ELSS	Emergency Life Support Stores
1177	EM	ElectroMagnetism/ElectroMagnetic
1178	Em	Exametre
1179	EMA	European Medicines Agency
1180	EMCON	(Electromagnetic) Emissions Control
1181	EMDG	Euro-Missile Dynamics Group
1182	EMDR	Eye Movement Desensitisation and Reprocessing
1183	EMEA	Europe,Middle East and Africa
1184	EMG	ElectroMyoGraph
1185	EMP	ElectroMagnetic Pulse
1186	EMS	Emergency Medical Services
1187	EMT	Emergency Medical Technician
1188	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1189	ENE	East North-East
1190	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1191	ENTEC	Euro NATO Training Engineer Centre
1192	ENVL	Envelope
1193	ENY	Enemy
1194	EOD	Explosive Ordnance Disposal
1195	EOG	ElectroOculoGraphy
1196	EOM	End of Message
1197	EOSAT	Earth Observation Satellite
1198	EOSDIS	Earth Observation Satellite Data and Information System
1199	EP	European Parliament
1200	EP	Extended play
1201	EPCOT	Experimental Prototype Community Of Tomorrow
1202	EPGS	EOS Polar Ground Sites
1203	EPIRB	Emergency Position Indicating Radio Beacon
1204	EPL	English Premier League
1205	EPOS	Electronic Point Of Sale
1206	EPPA	Employee Polygraph Protection Act
1207	EPR	European Pressurised [Nuclear] Reactor
1208	EQ	Emotional Quotient
1209	Er	Erbium
1210	ERCIM	European Research Consortium for Informatics and Mathematics
1211	ERI	Eritrea (ISO 3166 trigram)
1212	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1213	EROS	Earth Resources Observation System
1214	ERP	Engineer Regulating Point
1215	ERR	Eesti Rahvusringhääling
1216	ERS	Earth Resources Survey
1217	ERTS	Earth Resources Technology Satellite (became Landsat)
1218	ERV	Endogenous RetroVirus
1219	ESD	ElectroStatic Discharge
1220	ESDP	European Security and Defence Policy
1221	ESE	East South-East
1222	ESH	Western Sahara (ISO 3166 trigram)
1223	ESL	English as a Second Language
1224	ESM	Electronic warfare Support Measures
1225	ESO	European Southern Observatory
1226	ESOL	English for Speakers of Other Languages
1227	ESPN	Entertainment and Sports Programming Network
1228	ESU	Emergency Services Unit
1229	ESV	Engineer Support Vehicle
1230	ET	Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1231	ETH	Ethiopia (ISO 3166 trigram)
1232	ETI	Extra-Terrestrial Intelligence
1233	ETLA	Extended TLA
1234	ETT	Embedded Training Team
1235	Eu	Europium
1236	EUCOM	(U.S.) European Command
1237	EUUSA	European Union and United States of America
1238	EV	Exavolt
1239	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1240	EWTN	Eternal Word Television Network
1241	Exatesla	Extra Terrestrial
1242	EXREP	Expeditious Repair (SM&R code)
1243	f	Femto
1244	fA	Femtoampere
1245	FA	Food Addicts in Recovery Anonymous
1246	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1247	FAAD	Forward Area Air Defence
1248	FAADEZ	Forward Area Air Defence Engagement Zone
1249	FAAFP	Fellow of the American Academy of Family Physicians
1250	FAAN	Fellow of the American Academy of Neurology
1251	FAAN	Fellow of the American Academy of Nursing
1252	FAAQ	Frequently Asked and Anticipated Questions
1253	FAASV	Field Artillery Ammunition Supply Vehicle
1254	FAB	Feline Advisory Bureau (UK feline charity)
1255	FACA	(US) Federal Advisory Committee Act
1256	FACH	Fuerza Aérea de Chile
1257	FACN	Fellow of the American College of Nutrition
1258	FACP	Fellow of the American College of Physicians
1259	FACTS	Flexible Alternating Current Transmission System
1260	FAM	Foreign Affairs Manual
1261	FAO	Food and Agriculture Organization
1262	FAPA	Fellow of the American Psychological Association
1263	FAPHA	Fellow of the American Public Health Association
1264	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1265	FASCAM	Family of Scatterable Mines[1]
1266	FASD	Fetal Alcohol Spectrum Disorder
1267	FASEB	Federation of American Societies for Experimental Biology
1268	FAT	Field Artillery Tractor
1269	FAVS	Future Armoured Vehicle System
1270	FAW	Football Association of Wales
1271	FBCS	Fellow of the British Computer Society
1272	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1273	FBIS	Foreign Broadcast Information Service
1274	FBM	Board foot
1275	fC	Femtocoulomb
1276	FCC	U.S. Federal Communications Commission
1277	FCE	First Certificate in English
1278	FCF	Financial Free Cash Flow
1279	FCLA	Fraud Claims Law Associate
1280	FCO	UK Foreign and Commonwealth Office
1281	FCW	Florida Championship Wrestling
1282	FD	Falun Dafa
1283	FDA	Food and Drug Administration (U.S.)
1284	FDBK	(I) Feedback
1285	Fe	Iron (Latin Ferrum)
1286	FEAST	Forum for European-Australian Science and Technology Cooperation
1287	FEATS	Festival of European Anglophone Theatrical Societies link title
1288	FEBA	Forward Edge of the Battle Area
1289	FED	Field Emission Display
1290	FEDEP	Federation Development Process (Simulation)
1291	FEF	Frontal Eye Field (neurophysiology)
1292	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1293	FENS	Federation of European Neuroscience Societies
1294	FES	Flywheel Energy Storage
1295	FEST	Frankfurt English Speaking Theatre link title
1296	FET	Field-effect transistor
1297	FEZ	Fighter Engagement Zone
1298	fF	Femtofarad
1299	FF	Final Fantasy
1300	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1301	FFC	Free For Chat
1302	FFE	Fukuoka Futures Exchange
1303	FFF	Fédération française de football (French for: French Football Federation)
1304	FFG	Guided Missile Frigate (hull classification symbol)
1305	FFOV	Forward Field Of View
1306	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1307	FFS	For Fuck's Sake
1308	FFT	Final Fantasy Tactics
1309	FG	Falun Gong
1310	fg	Femtogram
1311	FG	Fog (METAR Code), French Guiana (FIPS 10-4 territory code)
1312	FGOTUS	First Gentleman of the United States
1313	FGR	Flickr Group Roulette
1314	fH	Femtohenry
1315	FHFIF	Foster's Home for Imaginary Friends
1316	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1317	FI	Finland (ISO 3166 digram; FIPS 10-4 country code)
1318	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1319	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1320	FIBUA	Fighting In Built-Up Areas
1321	FIC	Fellowship for Intentional Community
1322	FID	Foreign Internal Defence
1323	FIE	Fly-In Echelon
1324	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1325	FIFe	Fédération internationale féline (French for: International Feline Federation)
1326	FIFO	First In, First Out
1327	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1328	FIGJAM	Fuck I'm Good, Just Ask Me
1329	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1330	FIN	Finland (ISO 3166 trigram)
1331	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1332	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1333	FIS	Fédération internationale de ski (French for: International Ski Federation)
1334	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1335	FISH	Fluorescence In-Situ Hybridisation
1336	FiST	Fire Support Team
1337	FITS	Flexible Image Transport System
1338	FIU	Florida International University
1339	fJ	Femtojoule
1340	FJ	Fiji (ISO 3166 digram; FIPS 10-4 country code)
1341	FJI	Fiji (ISO 3166 trigram)
1342	FJN	Financial Job Network
1343	FK	Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1344	fK	Femtokelvin
1345	FKSM	Fort Knox Supplemental Manual
1346	FKT	Fastest Known Time
1347	fL	Femtolitre
1348	FL	Florida (postal symbol)
1349	fl	floruit (Latin for: living) (genealogy)
1350	FLA	Florida,Front Line Assembly,Future Large Aircraft
1351	FLAB	Four-letter abbreviation
1352	FLAC	Free Legal Advice Centres
1353	FLAC	Free Lossless Audio Codec
1354	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1355	FLB	Forward Logistics Base
1356	FLET	Forward Line of Enemy Troops
1357	FLG	Falun Gong
1358	FLIP	Flight Information Publication
1359	FLIR	Forward Looking InfraRed (sensor)
1360	FLK	Falkland Islands (ISO 3166 trigram)
1361	FLOT	Forward Line of Own Troops
1362	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1363	FLQ	Free Legal Questions
1364	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1365	FLSA	Fair Labor Standards Act
1366	FLTSAT	Fleet Satellite
1367	FLTSATCOM	Fleet Satellite Communication System
1368	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1369	FM	Factory Mutual
1370	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)
1371	fm	Femtometre
1372	Fm	Fermium
1373	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1374	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1375	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1376	FMCG	Fast Moving Consumer Goods
1377	FME	Formal Methods Europe
1378	FMECA	Failure Modes and Effect Criticality Analysis
1379	FMJD	Fédération Mondiale du Jeu de Dames
1380	FMLA	Family Medical Leave Act
1381	FoE	Friends of the Earth
1382	FOGC	Federal Oil and Gas Council
1383	FOH	Front Of House
1384	FOIA	Freedom of Information Act
1385	FOM	Federation Object Model
1386	FONSI	Finding of No Significant Impact
1387	FOO	Forward Observation Officer
1388	FOOP	Friends Of Organ Pipes (Volunteer group)
1389	FoS	Family of Systems
1390	FOSE	Fallout 3 Script Extender
1391	FOSE	Federal Office Systems Expo
1392	FOT	Free on truck
1393	FOTA	Fellow of the Orthodontic Technicians Association
1394	FOTC	Flight of the Conchords
1395	FOUO	For Official Use Only
1396	FP	French Polynesia (FIPS 10-4 territory code)
1397	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1398	FPS	Fire Prevention System
1399	FQ	Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1400	FR	France (FIPS 10-4 country code; ISO 3166 digram)
1401	Fr	Francium
1402	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1403	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1404	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1405	FRICBM	Full Range ICBM
1406	FRO	Faroe Islands (ISO 3166 trigram)
1407	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1408	FRSA	Fellow of the Royal Society of Art
1409	FRY	Federal Republic of Yugoslavia
1410	fs	Femtosecond
1411	fS	Femtosiemens
1412	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1413	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1414	FSCL	Fire Support Co-ordination Line
1415	FSE	Fire Support Element
1416	FSF	Free Software Foundation
1417	FSH	Follicle Stimulating Hormone
1418	FSI	Fuel Stratified Injection
1419	FSS	Fire Support Station
1420	FSSP	Families of Structurally Similar Proteins
1421	FSTC	Foreign Science Technology Center (now NGIC)
1422	fT	Femtotesla
1423	FTC	Federal Trade Commission
1424	FTE	Full Time Equivalent
1425	FTL	Faster Than Light
1426	FTS	Flight Termination System used during some rocket launches
1427	FTS	Fuck That Shit
1428	FU	Smoke (METAR Code)
1429	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1430	fV	Femtovolt
1431	fW	Femtowatt
1432	FW	Forward
1433	FWC	Football World Cup
1434	FWF	Fixed Word Format
1435	FWI	French West Indies
1436	FWIW	For What It's Worth
1437	FWS	U.S. Fish and Wildlife Service
1438	FWT	Fresh Water Tank
1439	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1440	FYA	For Your Agenda
1441	FYDP	Five-Year Defense Plan (U.S.)
1442	FYI	For Your Information
1443	FYROM	Former Yugoslav Republic of Macedonia
1444	FZDZ	Freezing Drizzle (METAR Code)
1445	FZFG	Freezing Fog (METAR Code)
1446	FZRA	Freezing Rain (METAR Code)
1447	g	Gram
1448	G3	Heckler & Koch G3
1449	GAAR	General Anti-Avoidance Rule (tax evasion)
1450	GAB	Gabon (ISO 3166 trigram)
1451	GABA	Gamma-AminoButyric Acid
1452	GAD	Generalized Anxiety Disorder
1453	GAF	Garfield and Friends
1454	GAO	U.S. Government Accountability Office
1455	GAW	Global Atmospheric Watch
1456	GBBC	Great (Global) Backyard Bird Count
1457	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1458	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1459	GCA	Graduate in Claims Administration
1460	GCD	see entry
1461	GCF	Greatest Common Factor
1462	GCI	Ground-controlled interception
1463	GCN	Gamma-ray burst Coordination Network
1464	GCS	Global Coordinate System
1465	GCSE	General Certificate of Secondary Education (UK)
1466	Gd	Gadolinium
1467	GD	Grenada (ISO 3166 digram)
1468	GDL	Game Definition Language
1469	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1470	GDR	German Democratic Republic (cf. DDR)
1471	GDW	Game Designers Workshop
1472	Ge	Germanium
1473	GEBCO	General Bathymetric Chart of the Oceans
1474	GEC	Great Engineering Challenge
1475	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1476	GEEP	Geophysical Equipment Exploration Platform
1477	GEN	Full General (four stars) in the U.S. Army
1478	GeV	Gigaelectron-volt
1479	GEV	Ground Effect Vehicle
1480	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1481	GFI	Ground Fault Interruptor (aka GFCI)
1482	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1483	GFN	Global Footprint Network
1484	GG	Georgia (FIPS 10-4 country code)
1485	GGK	Good God Karma
1486	GHA	Ghana (ISO 3166 trigram)
1487	GHB	gamma-Hydroxybutyric acid
1488	Gi	Gibi
1489	GIB	Gibraltar (ISO 3166 trigram)
1490	GIG	Global Information Grid
1491	GINO	Godzilla In Name Only
1492	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1493	GJD	Geocentric Julian Day
1494	GLAAD	Gay and Lesbian Alliance Against Defamation
1495	GLAC	General Ledger Accounting Code
1496	GLAST	Gamma-ray Large Area Space Telescope
1497	GLBA	Gramm-Leach-Bliley Act
1498	GLC	Gas-liquid chromatography
1499	GLP	Guadeloupe (ISO 3166 trigram)
1500	GLV	Gained Life Value
1501	Gm	Gigametre
1502	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Germany (FIPS 10-4 country code),Guru Meditation (computing)
1503	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
1504	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1505	GMFSC	Ground Mobile Forces Satellite Communications
1506	GMO	Genetically Modified Organism
1507	GMPCS	Global Mobile Personal Communications by Satellite
1508	GNAS	Grand National Archery Society
1509	GNB	Guinea-Bissau (ISO 3166 trigram)
1510	GNP	Gross National Product
1511	GNQ	Equatorial Guinea (ISO 3166 trigram)
1512	GnRH	Gonadotropin-Releasing Hormone
1513	GO	Glorioso Islands (FIPS 10-4 territory code)
1514	GOA	General of the Army (United States only)
1515	GOAT	Greatest Of All Time
1516	GOC	General Officer Commanding
1517	GOES	Geostationary Operational Environmental Satellite
1518	GOP	Grand Old Party
1519	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1520	GOSC	General Officer Steering Committee
1521	GOSH	Great Ormond Street Hospital
1522	GOSP	Gas/Oil Separation Plant
1523	GOTS	Government off-the-shelf
1524	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1525	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1526	GPA	Grade Point Average
1527	GPC	Global Path Cache
1528	GPIB	General-Purpose Instrumentation/Interface Bus
1529	GPO	General Post Office
1530	GPPC	Genetics and Public Policy Center
1531	GPR	Ground-Penetrating Radar
1532	GPS	General Problem Solver,Global Positioning System
1533	GPT	General Purpose Technology, Get paid to surf (an online business model)
1534	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]
1535	GR	Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1536	GRAIL	Gravity Recovery and Interior Laboratory
1537	GRAS	Generally recognized as safe (FDA list)
1538	GRB	Gamma-Ray Burst
1539	GRC	Greece (ISO 3166 trigram)
1540	GRD	Grenada (ISO 3166 trigram)
1541	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1542	grep	[search] Globally for Regular Expression,Print [lines]
1543	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1544	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1545	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1546	GRL	Greenland (ISO 3166 trigram)
1547	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1548	Gs	Gigasecond
1549	GSA	U.S. General Services Administration
1550	GSD	Graphical Situation Display
1551	GSGB	(God send glamour boy 9-10/10)
1552	GSK	GlaxoSmithKline [good sexual karma]
1553	GSN	Game Show Network
1554	GSO	General Services Officer (U.S. Department of State)
1555	GSOH	Good Sense Of Humour
1556	GSP	Georges St-Pierre (Canadian MMA fighter)
1557	GSR	Gun Shot Residue
1558	GSS	Generic Security Services
1559	GSW	Gunshot wound
1560	GTD	Getting Things Done
1561	GTG	Got To Go (Internet chat)
1562	GTGN	Getty Thesaurus of Geographic Names
1563	GTK	Good To Know (Internet chat)
1564	GTM	Guatemala (ISO 3166 trigram)
1565	GU	Guam (postal symbol; ISO 3166 digram)
1566	GUF	French Guiana (ISO 3166 trigram)
1567	GUILT	Gangliated Utrophin Immuno Latency Toxin
1568	GULCR	Grupo de Usuarios de Linux de Costa Rica
1569	GUT	Grand Unification Theory
1570	GWARS	Ground Warfare System (simulation)
1571	GWAS	Grand Western Archery Society
1572	GWOT	Global War on Terrorism
1573	GXE	Gene-enivronment interaction
1574	GXM	Matrox Graphics eXpansion Module
1575	GY	Guyana (FIPS 10-4 country code; ISO 3166 digram)
1576	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1577	h	Hecto
1578	HAARP	High Frequency Active Auroral Research Program
1579	HAART	Highly Active Anti-Retroviral Therapy
1580	HAI	Human Awareness Institute
1581	HAL	Hardware Abstraction Layer
1582	HALO	High Altitude Low Opening (parachute jump)
1583	HAM	Amateur radio operator
1584	HANS	Head And Neck Support (device used in many race cars)
1585	HARM	High-speed Anti-Radiation Missile
1586	HAW	Heavy Antitank Weapon
1587	HAWK	Homing All the Way Killer (air defence system)
1588	HAZ	Heat-Affected Zone
1589	HAZMAT	Hazardous Materials
1590	HBCD	HexaBromoCycloDodecane
1591	HBO	Home Box Office
1592	HBR	Harvard Business Review
1593	HBT	Heterojunction Bipolar Transistor
1594	HBV	Hepatitis B Virus
1595	HCCI	Homogeneous Charge Compression Ignition
1596	HCF	Highest Common Factor
1597	HCSC	Higher Command and Staff Course
1598	HDL	High-Density Lipoprotein
1599	HDM	Human Decision-Making
1600	HDRA	Henry Doubleday Research Association
1601	He	Helium
1602	HE	High Explosive
1603	HEAT	High Explosive Anti-Tank (ammunition)
1604	HEBA	Hellenic Basketball Clubs Association
1605	HEER	High-Explosive Extended Range (ammunition)
1606	HEIC	Honourable East India Company
1607	HEMP	High-Altitude Electromagnetic Pulse
1608	HEOSS	High Earth Orbit Space Surveillance
1609	HEP	High-Explosive Plastic (ammunition)
1610	HEPA	High-Efficiency Particulate Air (filter)
1611	HESV	Heavy Engineering Support Vehicle
1612	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1613	HEU	Highly Enriched Uranium
1614	Hf	Hafnium
1615	HF	High Frequency
1616	HFE	Human Fertilisation and Embryology (UK Act)
1617	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1618	HFEA	Human Fertilisation and Embryology Authority (UK)
1619	Hg	Mercury (Latin Hydrargyrum)
1620	HGC	UK Human Genetics Commission
1621	HGF	Human Growth Factor
1622	HGTV	Home & Garden Television
1623	HI	Hawaii (postal symbol)
1624	HIH	His (or Her) Imperial Highness
1625	HIM	His (or Her) Imperial Majesty
1626	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1627	HIMEZ	High Altitude Missile Engagement Zone
1628	HIMYM	How I Met Your Mother
1629	HIPAA	U.S. Health Insurance Portability and Accountability Act
1630	Hipparcos	HIgh Precision Parallax COllecting Satellite
1631	Hird	Hurd of interfaces representing depth (cf. HURD)
1632	HiRISE	High Resolution Imaging Science Experiment
1633	HIT	Health Information Technology
1634	HIV	Human Immunodeficiency Virus
1635	HIWT	Hobart Institute of Welding Technology
1636	HJD	Heliocentric Julian Day
1637	HK	Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1638	HKG	Hong Kong (ISO 3166 trigram)
1639	HKS	HyperKinetic Syndrome
1640	hL	Hectolitre
1641	HL	Holding Line
1642	HLL	High-Level Language
1643	HLN	Headline News
1644	HLOS	High Level Output Specification
1645	HM	Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1646	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1647	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1648	HMF	HydroxyMethyl Furfural
1649	HMO	Health maintenance organization
1650	HMP	Her Majesty's Prison
1651	HMRC	Her/His Majesty's Revenue and Customs
1652	HMSO	Her Majesty's Stationery Office
1653	HMV	His Master's Voice
1654	HN	Honduras (ISO 3166 digram)
1655	HND	Honduras (ISO 3166 trigram)
1656	Ho	Holmium
1657	HO	Honduras (FIPS 10-4 country code)
1658	HOLLAND	Hope Our Love Lasts And Never Dies
1659	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1660	HOT	Highly Optimised Tolerance
1661	HOTAS	Hands on throttle-and-stick
1662	HOV	High Occupancy Vehicle
1663	hp	horse power
1664	HPA	UK Health Protection Agency
1665	HPCL	Hindustan Petroleum Corporation Limited
1666	HPLC	High Performance Liquid Chromatography
1667	HPT	High[er] Payoff Target
1668	HPV	Human Papilloma Virus
1669	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1670	HRD	Human Resource Development
1671	HRF	High iness Forces
1672	HRH	His (or Her) Royal Highness
1673	HRM	His (or Her) Royal Majesty
1674	HRM	Human Resource Management
1675	HRT	Hormone Replacement Therapy
1676	Hs	Hassium
1677	HSBC	The Hong Kong and Shanghai Banking Corporation
1678	HSC	Higher School Certificate
1679	HSM	High School Musical
1680	HSMAD	Human Science/Modeling and Analysis Data
1681	HSN	Home Shopping Network
1682	HSPH	Harvard School of Public Health
1683	HSSI	High-Speed Serial Interface
1684	HST	see entry
1685	HTA	HyperText Application
1686	HTFU	Harden The Fuck Up
1687	HTH	Hope That Helps
1688	HTI	Haiti (ISO 3166 trigram)
1689	HTML	HyperText Markup Language
1690	HTR	Heated Towel Rail
1691	HTS	High-Temperature Superconducting wire
1692	HTTP	HyperText Transfer Protocol
1693	HU	Hungary (ISO 3166 digram; FIPS 10-4 country code)
1694	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1695	HUN	Hungary (ISO 3166 trigram)
1696	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1697	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1698	HVAP	High Velocity Armour Piercing (ammunition)
1699	HVHF	High velocity human factors
1700	HVM	High Velocity Missile
1701	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1702	HWM	Hardware morphing (computer graphics rendering)
1703	HXB	The glycoprotein Tenascian C
1704	HZ	Haze (METAR Code)
1705	Hz	Hertz
1706	IA	Iowa (postal symbol)
1707	IAAL	I Am A Lawyer
1708	IAB	International Association for Biologicals
1709	IAD	Ion Assisted Deposition
1710	IADS	Integrated Air Defence System
1711	IAEA	International Atomic Energy Agency
1712	IAF	{i} Industrial Areas Foundation
1713	IAFG	Information Assurance Focus Group
1714	IANA	Internet Assigned Numbers Authority
1715	IANAL	I Am Not A Lawyer
1716	IAS	Image Assessment System
1717	IASIP	It's Always Sunny in Philadelphia
1718	IATA	International Air Transport Association
1719	IATF	International Automotive Task Force
1720	IATSE	International Alliance of Theatrical Stage Employees
1721	IAUC	International Astronomical Union Circular
1722	IAW	In Accordance With
1723	IB	International Baccalaureate
1724	IBA	Important Bird Area
1725	IBD	Inflammatory Bowel Disease
1726	IBDM	Information Based Decision Making
1727	IBM	International Business Machines
1728	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1729	IBS	Irritable Bowel Syndrome
1730	ICANN	Internet Corporation for Assigned Names and Numbers
1731	ICAO	International Civil Aviation Organization
1732	ICBM	Intercontinental Ballistic Missile
1733	ICBN	International Code of Botanical Nomenclature
1734	ICE	In case of emergency
1735	ICES	International Council for the Exploration of the Sea
1736	ICF	Intelligent Community Forum
1737	ICMP	Internet Control Message Protocol
1738	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1739	ICO	Intermediate Circular Orbit
1740	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1741	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1742	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1743	ICRL	Individual Component Repair List
1744	ICRS	International Celestial Reference System
1745	ICSI	Intracytoplasmic Sperm Injection
1746	ICT	Information and communication technologies
1747	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1748	ICV	Infantry Carrier Vehicle
1749	ICYMI	In Case You Missed It
1750	IDC	International Data Corporation
1751	IDDI	I don't do initialisms (see irony)
1752	IDGAF	I don't give a fuck
1753	IDK	I don't know
1754	IDL	Interface Definition Language
1755	IDN	Indonesia (ISO 3166 trigram)
1756	IEA	International Energy Agency
1757	IEC	International Electrotechnical Commission
1758	IED	Improvised Explosive Device
1759	IELTS	International English Language Testing System
1760	IER	Information Exchange Requirement
1761	IET	Initial Entry Training
1762	IET	Institution of Engineering and Technology
1763	IETF	Internet Engineering Task Force
1764	IEW	Intelligence and Electronic Warfare
1765	IFAB	International Football Association Board
1766	IFAH	International Federation for Animal Health
1767	IFAP	International Federation of Agricultural Producers
1768	IFO	Identified Flying Object (see also UFO)
1769	IFOV	Instantaneous Field of View
1770	IFPI	International Federation of Phonographic Industries
1771	IFRB	International Frequency Registration Board
1772	IFV	Infantry Fighting Vehicle
1773	IG	Inspector General
1774	IGNOU	Indira Gandhi National Open University
1775	IGS	International Ground Station
1776	IHH	Idiopathic Hypogonadotropic Hypogonadism
1777	IHO	International Hydrographic Organization
1778	IHR	Institute for Historical Review
1779	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1780	II	Two (in Roman numerals)
1781	IICA	Inter-American Institute for Cooperation on Agriculture
1782	IIE	Innovative Interstellar Explorer
1783	III	Three (in Roman numerals)
1784	IIRC	If I Recall/Remember Correctly
1785	IISS	International Institute for Strategic Studies
1786	IJN	Imperial Japanese Navy (World War II)
1787	IJWP	Interim Joint Warfare Publication
1788	ILDS	Improved Landmine Detection System
1789	ILO	International Labour Organization
1790	ILRI	International Livestock Research Institute
1791	ILY	I Love You [pronounced ILL-LEE]
1792	IMBD	International Migratory Bird Day
1793	IMDb	Internet Movie Database
1794	IME	In My Experience
1795	IMHO	In My Humble/Honest Opinion
1796	IML	International Mister Leather
1797	IMNSHO	In My Not So Humble Opinion
1798	IMPAC	International Merchant Purchase Authorization Card
1799	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1800	IMPATT	IMPact Avalanche Transit Time diode
1801	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1802	IMRL	Individual Material iness List
1803	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1804	IMsL	International Ms. Leather
1805	IMT	Integrated Management Tool
1806	IMU	International Mathematical Union
1807	In	Indium
1808	INA	Immigration and Nationality Act
1809	INAS	International Near-Earth Asteroid Survey
1810	INCITS	InterNational Committee for Information Technology Standards
1811	IND	India (ISO 3166 trigram)
1812	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1813	inet	the Internet
1814	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1815	INFOSEC	Information Security
1816	INLA	Irish National Liberation Army
1817	INMARSAT	International Maritime Satellite organization
1818	INRIA	Institut national de recherche en informatique et en automatique
1819	INS	Immigration and Naturalization Service
1820	InSAR	Interferometric synthetic aperture radar
1821	INST	Information Standards and Technology
1822	INTERFET	International Force for East Timor
1823	INTSUM	Intelligence Summary
1824	IO	British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1825	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1826	IPB	Intelligence Preparation of the Battlefield
1827	IPL	Inferior Parietal Lobule
1828	IPO	Initial Public Offering
1829	IPT	Integrated Product/Project Team
1830	IPTS	Institute for Prospective Technological Studies
1831	IPTV	Internet Protocol TeleVision
1832	IPW	Interrogation of Prisoners of War
1833	Ir	Iridium
1834	IRAD	Internal Research and Development
1835	IRAN	(I) Inspect and Repair As Necessary
1836	IRAS	Infrared Astronomical Satellite
1837	IRB	International Rugby Board
1838	IRBM	Intermediate Range Ballistic Missile
1839	IREA	Intermountain Rural Electric Association
1840	IRINN	Islamic Republic of Iran News Network
1841	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1842	IRN	Iran (ISO 3166 trigram)
1843	IRO	International Refugee Organisation
1844	IRQ	Iraq (ISO 3166 trigram)
1845	IRS	U.S. Internal Revenue Service
1846	IRST	Infra-red Search and Track
1847	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1848	ISAR	Inverse SAR (Synthetic Aperture Radar)
1849	ISB	Intermediate Staging Base
1850	ISBN	International Standard Book Number (ISO 2108)
1851	ISCCP	International Satellite Cloud Climatology Project
1852	ISCII	Indian Standard Code for Information Interchange
1853	ISDN	Integrated Services Digital Network
1854	ISEF	Intel International Science and Engineering Fair
1855	ISEN	Internet Search Environment Number
1856	ISF	Internal Security Force
1857	ISIL	Islamic State of Iraq and the Levant
1858	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1859	ISL	Iceland (ISO 3166 trigram)
1860	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1861	ISMB	International Society of Matrix Biologists
1862	ISMC	Intelligent Sounding Meaningless Conversation
1863	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1864	ISPE	International Society for Pharmacoepidemiology
1865	ISRO	Indian Space Research Organisation
1866	ISSCR	International Society for Stem Cell Research
1867	ISSN	International standard serial number (ISO 3297)
1868	ISTC	Institute of Scientific and Technical Communications (UK)
1869	ISTS	Intel Science Talent Search
1870	ITA	Italy (ISO 3166 trigram)
1871	ITAG	Inertial Terrain-Aided Guidance
1872	ITALY	I'll Truly Always Love You
1873	ITAS	Improved Target Acquisition Sight
1874	ITC	InferoTemporal Cortex (neurophysiology)
1875	ITCZ	Intertropical Convergence Zone
1876	ITEC	Information Technology Exposition & Conference
1877	ITEMS	Interactive Tactical Environment Management System
1878	ITER	International Thermonuclear Experimental Reactor
1879	ITF	International Tennis Federation
1880	ITK	In The Know
1881	ITN	Independent Television News (British)
1882	ITT	International Telephone and Telegraph (U.S.)
1883	ITTO	International Tropical Timber Organization
1884	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1885	Iveco	Industrial Vehicles Corporation
1886	IVF	In Vitro Fertilisation
1887	IVI	Interchangeable Virtual Instrument
1888	IVIS	Inter-Vehicle Information System
1889	IVL	Inter-Visibility Line
1890	IVM	In Vitro [Oocyte] Maturation
1891	IVO	In Vicinity Of
1892	IW	Information Warfare
1893	IWARS	Infantry Warrior Simulation
1894	IWC	International Whaling Commission
1895	IWW	Industrial Workers of the World
1896	IX	Nine (in Roman numerals)
1897	IXT	IntraText digital library; IntraText lexical hypertext
1898	IY	Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1899	IZ	Iraq (FIPS 10-4 country code)
1900	J	Joule
1901	J1	Joint [Manpower &] Personnel Directorate
1902	J2	Joint Intelligence Directorate
1903	J3	Joint Operations Directorate
1904	J4	Joint Logistics Directorate
1905	J5	Joint Strategic Plans & Policy Directorate
1906	J7	Joint Operational Plans & Interoperability Directorate
1907	JA	Japan (FIPS 10-4 country code)
1908	JAFT	Just A Field Test
1909	JAL	Japan Airlines
1910	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1911	JAM	Jamaica (ISO 3166 trigram)
1912	JAMA	Journal of the American Medical Association
1913	JANET	Joint Academic Network
1914	JATO	Jet-Assisted Take-Off
1915	JB	Jail Bait
1916	JB	Junior Branch
1917	JBFSA	Joint Blue Force Situational Awareness
1918	JCDB	Joint Common Data Base
1919	JCDS	Joint Chiefs of the Defence Staff
1920	JCIDS	Joint Capabilities Integration and Development System
1921	JCL	Job Control Language
1922	JCP	Java Community Process
1923	JCS	Joint Chiefs of Staff
1924	JCW	Juggalo Championship Wrestling
1925	JDBC	Java Data Base Connectivity
1926	JDEM	Joint Dark Energy Mission
1927	JDL	Jewish Defense League
1928	JE	Jersey (FIPS 10-4 territory code)
1929	JEFX	Joint Expeditionary Force eXperiment
1930	JET	Joint European Torus
1931	JEZ	Joint Engagement Zone
1932	JFACC	Joint Force Air Component Commander
1933	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1934	JFC	Joint Force Commander
1935	JFK	John Fitzgerald Kennedy or the airport named after him.
1936	JFLCC	Joint Force Land Component Commander
1937	JFMCC	Joint Force Maritime Component Commander
1938	JFO	Journal of Field Ornithology
1939	JFSOCC	Joint Force Special Operations Component Commander
1940	JFTX	Joint Field Training Exercise
1941	JH	Japan Highway Public Corporation
1942	JH	Jharkhand (Indian state code)
1943	JI	Joint Implementation
1944	JIB	Joint Information Bureau
1945	JIC	Joint Intelligence Centre
1946	JINI	Java Intelligent Network Infrastructure
1947	JITC	Joint Interoperability Test Command
1948	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1949	JJAP	Japanese Journal of Applied Physics
1950	JL	Japan Airlines (IATA airline designator)
1951	JLA	Justice League of America
1952	JM	Jamaica (FIPS 10-4 country code; ISO 3166 digram)
1953	JMS	Java Message Service
1954	JN	Jan Mayen Island (FIPS 10-4 territory code)
1955	JNI	Java Native Interface
1956	JNLP	Java Network Launch Protocol
1957	JO	Jordan (FIPS 10-4 country code; ISO 3166 digram)
1958	JOA	Joint Operations Area
1959	JOPES	Joint Operations Planning and Execution System
1960	JOR	Jordan (ISO 3166 trigram)
1961	JOTS	Joint Operations Tactical System
1962	JPL	Jet Propulsion Laboratory
1963	JPN	Japan (ISO 3166 trigram)
1964	JPOW	Joint Project Optic Windmill
1965	JRDF	Joint Rapid Deployment Forces
1966	JRE	Java Runtime Environment
1967	JREF	James Randi Educational Foundation
1968	JROC	Joint Requirements Oversight Council
1969	JROCM	JROC Memorandum
1970	JRRF	Joint Rapid Reaction Force
1971	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
1972	JSAP	Japan Society of Applied Physics
1973	JSCSC	Joint Services Command and Staff College
1974	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
1975	JSF	Joint Strike Fighter
1976	JSIMS	Joint Simulation System
1977	JSOA	Joint Special Operations Area
1978	JSOTF	Joint Special Operations Task Force
1979	JSP	JavaServer Page
1980	JSP	Joint Services Publication
1981	JSR	Java Specification Request
1982	JSS	Joint Support Ship Project
1983	JTC	Joint Training Confederation
1984	JTF	Joint Task Force
1985	JTFEX	Joint Task Force Exercise
1986	JTLS	Joint Theater Level Simulation
1987	JTMD	Joint Theatre Missile Defence
1988	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
1989	JU	Juan de Nova Island (FIPS 10-4 territory code)
1990	JUGFET	JUnction Gate Field-Effect Transistor
1991	JUICE	JUpiter ICy Moon Explorer
1992	JUO	Joint Urban Operations
1993	JV	Joint Venture,Junior Varsity
1994	JW	Jehovah's Witnesses
1995	JWARS	Joint Warfare System (simulation)
1996	JWP	Joint Warfare Publication
1997	JY	Japanese Yen
1998	JZ	Joint Zone
1999	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
2000	k	Kilo-
2001	K	picokelvin
2002	K9	Canine Police Unit
2003	Ka	Kamov Design Bureau
2004	kA	Kiloampere
2005	KA	Knowledge Acquisition,Karnataka (Indian state code)
2006	KAF	Kandahar Air Field
2007	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
2008	KARNAC	Knowledge Aided Retrieval in Activity Context
2009	KARR	Knight Automated Roving Robot (Knight Rider character)
2010	KATUSA	Korean Augmentation To United States Army
2011	KAZ	Kazakhstan (ISO 3166 trigram)
2012	KBE	Knight Commander of the Order of the British Empire
2013	KBO	Kuiper Belt Object
2014	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2015	kC	Kilocoulomb
2016	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
2017	KCL	King's College London
2018	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
2019	KCS	Kansas City Southern Railway (AAR reporting mark)
2020	KD	Kawasaki Disease,Kraft Dinner
2021	KE	Kenya (FIPS 10-4 country code; ISO 3166 digram),Kinetic Energy,Knowledge Engineering
2022	KEDO	Korean Peninsula Energy Development Organization
2023	KEN	Kenya (ISO 3166 trigram)
2024	KERA	Kentucky Education Reform Act (of 1990)
2025	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
2026	KESR	Kent and East Sussex Railway.
2027	KET	Kentucky Educational Television,Key English Test
2028	kF	Kilofarad
2029	KFC	Kentucky Fried Chicken
2030	KFOR	UN Kosovo Force
2031	KFUPM	King Fahd University of Petroleum & Minerals
2032	KG	Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
2033	KGO	Knight of the Guelphic Order of Hanover
2034	KGZ	Kyrgyzstan (ISO 3166 trigram)
2035	KH	Cambodia (ISO 3166 digram)
2036	kH	Kilohenry
2037	KHL	Kontinental Hockey League
2038	KHM	Cambodia (ISO 3166 trigram)
2039	KHz	Kilohertz
2040	Ki	Kibi
2041	KI	Kiribati (ISO 3166 digram)
2042	KIA	Killed In Action
2043	KIDS	Knowledge-based Integrated Design System
2044	KIR	Kiribati (ISO 3166 trigram)
2045	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
2046	KIT	Keep In Touch
2047	KITECH	Korean Institute of Industrial Technology
2048	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
2049	kJ	Kilojoule
2050	kK	Kilokelvin
2051	KKK	Ku Klux Klan
2052	kL	Kilolitre
2053	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2054	KLOC	Kilo Lines Of Code
2055	KM	Comoros,Knowledge Management
2056	kN	Kilonewton
2057	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
2058	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2059	KO	Knocked Out
2060	KOR	Republic of Korea (ISO 3166 trigram)
2061	KP	Kim Possible
2062	KPMG	Klynveld,Peat,Marwick,Goerdeler
2063	KPNO	Kitt Peak National Observatory
2064	KQ	Kenya Airways (IATA airline designator), Kingman Reef (FIPS 10-4 territory code)
2065	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
2066	Kr	Krypton
2067	KS	Kansas (postal symbol), Republic of Korea (FIPS 10-4 country code)
2068	kS	Kilosiemens
2069	KSC	Kennedy Space Center
2070	KSI	Killed or Seriously Injured
2071	KSU	Kansas State University
2072	KT	Christmas Island (FIPS 10-4 territory code), Knight of the Order of the Thistle, Knights Templar
2073	kT	Kilotesla
2074	KTS	Knight of the Tower and Sword (of Portugal)
2075	KU	Kuwait (FIPS 10-4 country code)
2076	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
2077	kV	Kilovolt
2078	KV	Kosovo
2079	kW	Kilowatt
2080	KW	Kuwait (ISO 3166 digram)
2081	KWB	Kids' WB!
2082	KWT	Kuwait (ISO 3166 trigram)
2083	KX	Cayman Airways (IATA airline designator)
2084	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2085	KZ	Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2086	KZN	KwaZulu-Natal
2087	La	Lanthanum
2088	LA	Laos (FIPS 10-4 country code; ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2089	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2090	LAB	Logistics Assault Base
2091	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2092	LACMA	Los Angeles County Museum of Art
2093	LAD	Laser Aiming Device
2094	LADW	Local Air Defence Warning
2095	LAESI	Local Authority & Emergency Service Information
2096	LAN	Local Area Network
2097	LANL	Los Alamos National Laboratory
2098	LAO	Laos (ISO 3166 trigram)
2099	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2100	LARC	Livermore Advanced Research Computer (cf. LLNL)
2101	LARP	Live-Action Role-Playing
2102	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2103	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2104	LATA	Local Access Transport Area
2105	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2106	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2107	LAW	Light Antitank Weapon
2108	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2109	LB	Lebanon (ISO 3166 digram)
2110	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2111	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2112	LBN	Lebanon (ISO 3166 trigram)
2113	LBNL	Lawrence Berkeley National Laboratory
2114	LBR	Liberia (ISO 3166 trigram)
2115	LBS	Location-Based Services
2116	LBT	Large Binocular Telescope
2117	LBW	Leg Before Wicket
2118	LBY	Libya (ISO 3166 trigram)
2119	LCA	Saint Lucia (ISO 3166 trigram)
2120	LCC	Land Component Commander
2121	LCCP	Light Contingency Communications Package
2122	LCD	Liquid Crystal Display
2123	LCM	Least/Lowest Common Multiple
2124	LCS	League of Legends Championship Series
2125	LDA	Lateral Drift Apparatus (paratroops)
2126	LDC	Lesser Developing/Developed Country
2127	LDL	Low-Density Lipoprotein
2128	LDV	Local Defence Volunteers (British Home Guard)
2129	LDW	Lane Departure Warning (ADAS)
2130	LE	Lebanon (FIPS 10-4 country code)
2131	LEC	Local Exchange Carrier
2132	LED	Light-Emitting Diode
2133	LEGAD	Legal Advice
2134	Legs	level emotion gad speed
2135	LEMOSS	Long-Endurance MObile Submarine Simulator
2136	LEN	Large Extension Node
2137	LEP	Large Electron-Positron collider
2138	LER	Loss-Exchange Ratio
2139	LEU	Low-Enriched Uranium
2140	LF	Low Frequency
2141	LFO	Low Frequency Oscillation / Oscillator
2142	LFTR	Liquid fluoride thorium reactor
2143	LG	Latvia (FIPS 10-4 country code)
2144	LGM	Little Green Men
2145	LGS	Landsat Ground Station
2146	LHC	Large Hadron Collider
2147	LHS	Left Hand Side
2148	Li	Lithium
2149	LIBOR	London Interbank Offered Rate
2150	LIBS	Laser Induced Breakdown Spectroscopy
2151	LIE	Liechtenstein (ISO 3166 trigram)
2152	LIGO	Laser Interferometer Gravitational-Wave Observatory
2153	LINEAR	Lincoln Near-Earth Asteroid Research
2154	LISA	Laser Interferometer Space Antenna
2155	LIVE	Liquid Inertial Vibration Eliminator
2156	LJJ	Lord Justices of Appeal
2157	LK	Sri Lanka (ISO 3166 digram)
2158	LKA	Sri Lanka (ISO 3166 trigram)
2159	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2160	LLAD	Low Level Air Defence
2161	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2162	LLC	Limited Liability Company
2163	LLLTV	Low-Light Level Television
2164	LLNL	Lawrence Livermore National Laboratory
2165	LLP	Limited Liability Partnership
2166	LLTR	Low-Level Transit Route
2167	LMAO	Laughing My Ass Off (Internet shorthand)
2168	LMB	Lick My Balls
2169	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2170	LMN	Lifetime Movie Network
2171	LMS	Like My Status (Internet shorthand)
2172	LMV	() Light Motor Vehicle
2173	LNER	London and North Eastern Railway
2174	LNG	Liquefied Natural Gas
2175	LNO	Liaison Officer
2176	LO	Slovakia (FIPS 10-4 country code)
2177	LOA	Limit Of Advance
2178	LOC	Level of Operational Capability,Limited Operational Capability,Lines Of Code,Lines Of Communication,see entry
2179	LoD	Lines of Development (UK)
2180	LOFAR	Low Frequency Analysis and Recording
2181	LOGPAC	Logistics Package
2182	LOL	Laughing Out Loud (Internet shorthand)
2183	LOMEZ	Low Altitude Missile Engagement Zone
2184	LONEOS	Lowell Observatory Near-Earth-Object Search
2185	LORTID	LOng Range Target IDentification
2186	LOS	Line Of Sight
2187	LOSAT	Line-Of-Sight Anti-Tank (missile)
2188	LOTA	Licentiate of the Orthodontic Technicians Association
2189	LOTIS	Livermore Optical Transient Imaging System
2190	LOTS	Logistics Over-The-Shore
2191	LPC	Linear Predictive Coding
2192	LPG	Liquefied Petroleum Gas (cf. LNG)
2193	LPI	Low Probability of Intercept
2194	LQ	Palmyra Atoll (FIPS 10-4 territory code)
2195	Lr	Lawrencium
2196	LR	Liberia (ISO 3166 digram)
2197	LRC	Logistics iness Center
2198	LRGW	Long-Range Guided Weapon
2199	LRICBM	Limited Range ICBM
2200	LRIP	Low Rate Initial Production
2201	LRP	Logistics Release Point
2202	LRPE	Long-Range Planning Element
2203	LRS	Long Range Surveillance
2204	LRU	Line-Replaceable Unit
2205	LSI	Large-Scale Integration
2206	LSIF	Labour Sponsored Investment Fund
2207	LSND	Liquid Scintillator Neutrino Detector
2208	LSO	Lesotho (ISO 3166 trigram)
2209	LSST	Large Synoptic Survey Telescope
2210	Lt	Lieutenant
2211	LtC	Lieutenant-Colonel (U.S.)
2212	LTC	Long-Term Costing
2213	Ltd	Limited
2214	LTDP	Long-Term Defence Plan
2215	LTI	Linear Time-Invariant
2216	LTM	Acronym for Laughing To Myself
2217	LTP	Long-Term Potentiation
2218	LTU	Lithuania (ISO 3166 trigram)
2219	LU	Acronym Love You
2220	LU	Loonatics Unleashed
2221	Lu	Lutetium
2222	LUCA	Last Universal Common Ancestor
2223	LUG	Linux User Group
2224	LULU	Locally Unwanted Land Use (urbanism)
2225	LUX	Luxembourg (ISO 3166 trigram)
2226	LVA	Latvia (ISO 3166 trigram)
2227	LVEF	Left Ventricular Ejection Fraction
2228	Lw	Lawrencium (obsolete 1963)
2229	LWR	Laser warning receiver
2230	LWRC	Land Warfare Resources Corporation
2231	LWS	Land Warrior System
2232	LX	Electrics (theatrical term)
2233	LYAO	Laugh Your Ass Off
2234	LYLAS	Love You Like A Sister
2235	Ma	Megaannum
2236	mA	Milliampere
2237	MAA	Mathematical Association of America
2238	MAAC	Metro Atlantic Athletic Conference
2239	MACE	Multi-Agent Computing Environment
2240	MACHO	MAssive Compact Halo Object
2241	MAF	Maintenance Action Form
2242	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2243	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2244	MAGTF	Marine Air-Ground Task Force
2245	MALD	Miniature Air-Launched Decoy
2246	MANPADS	MAN-Portable Air Defence System
2247	MANPRINT	MANpower and PeRsonnel INTegration
2248	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2249	MAOI	Monoamine oxidase inhibitor
2250	MAPS	Monitoring Avian Productivity and Survivorship
2251	MAR	Morocco (ISO 3166 trigram)
2252	MarBEF	Marine Biodiversity and Ecosystem Functioning
2253	MARCENT	United States Marine Forces Central Command
2254	MARFORCC	Marine Force Component Commander
2255	MASAS	Monte Agliale Supernovae and Asteroid Survey
2256	Maser	Microwave Amplification by Stimulated Emission of Radiation
2257	MASH	Mobile Army Surgical Hospital
2258	MASINT	Measurement And Signature Intelligence
2259	MAVS	Mobile Artillery Vehicle System
2260	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2261	MBCC	Migratory Bird Conservation Commission (U.S.)
2262	MBCS	Multi-Byte Character Set
2263	MBI	Moody Bible Institute
2264	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2265	MBM	Meat and Bone Meal
2266	MBT	Main Battle Tank
2267	MBTI	Myers-Briggs Type Indicator
2268	mC	Millicoulomb
2269	MCDL	Model Composition Definition Language
2270	MCFT	Modified Compression Field Theory
2271	MCG	Melbourne Cricket Ground
2272	MCIS	Mellon Collie and the Infinite Sadness
2273	MCM	Mine Counter-Measures
2274	MCMV	Mine Counter-Measure Vessel
2275	MCR	My Chemical Romance
2276	MCSF	Marine Corps Security Forces
2277	MCT	Movement Control Team
2278	MCTIS	Mounted Co-operative Target Identification System
2279	Md	Mendelevium
2280	MDNA	Madonna's 12th studio album title (2012)
2281	MDO	Membership Driven Organisation
2282	MDP	Markov Decision Process
2283	MDT	Mountain Daylight Time (UTC-6 hours)
2284	MDV	Maldives (ISO 3166 trigram)
2285	Me	Messerschmitt
2286	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2287	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)
2288	MEDEVAC	Medical evacuation
2289	MEDS	Mission Essential Data Set
2290	MEG	MagnetoEncephaloGraphy
2291	MELT	Metallic Line/Loop Test (ing)
2292	MEMS	Microelectromechanical System
2293	MER	Mars Exploration Rover
2294	MERL	Mitsubishi Electric Research Laboratories
2295	MES	Manufacturing Execution Systems
2296	METAR	[Meteorological] Aviation Routine weather report
2297	METOC	Meteorological and Oceanographic
2298	MeV	Megaelectronvolt
2299	MEX	Mexico (ISO 3166 trigram)
2300	MEZ	Missile Engagement Zone
2301	mF	Millifarad
2302	MGPAM	My Gym Partner's a Monkey
2303	MGS	Mobile Gun System
2304	mH	Millihenry
2305	MHC	Major Histocompatibility Complex
2306	MHHW	Mean Higher High Water (nautical charts)
2307	MHL	Marshall Islands (ISO 3166 trigram)
2308	MHLW	Mean Higher Low Water (nautical charts)
2309	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2310	MHW	Mean High Water (nautical charts)
2311	MHWN	Mean High Water Neaps (nautical charts)
2312	MHWS	Mean High Water Springs (nautical charts)
2313	MHz	Megahertz
2314	Mi	Mebi
2315	MIA	Missing In Action
2316	MICLIC	Mine Clearing Line Charge
2317	MICOM	Missile Command
2318	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2319	MIDAS	Man-machine Integration Design and Analysis System
2320	MIDI	Musical Instrument Digital Interface
2321	MIDS	Multi-Function Information Distribution System
2322	MIFG	Shallow Fog (METAR Code)
2323	MIKE	Monitoring of Illegal Killing of Elephants
2324	MIL	Man-In-the-Loop
2325	MILC	Mirrorless interchangeable-lens camera
2326	MILF	Mother I'd Like to Fuck
2327	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2328	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2329	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2330	MIRV	Multiple Independent Reentry Vehicle
2331	MISREP	Mission Report
2332	MISSI	Multilevel Information System Security Initiative
2333	MITL	Man-In-The-Loop
2334	MITS	see entry
2335	mJ	Millijoule
2336	MJD	Modified Julian Day
2337	mK	Millikelvin
2338	MKG	Michael Kidd-Gilchrist (American basketball player)
2339	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2340	mL	Millilitre
2341	MLB	Major League Baseball
2342	MLC	Member of the Legislative Council (in India)
2343	MLE	Maximum likelihood estimation
2344	MLHW	Mean Lower High Water (nautical charts)
2345	MLI	Mali (ISO 3166 trigram)
2346	MLL	Major League Lacrosse
2347	MLLW	Mean Lower Low Water (nautical charts)
2348	MLP	My Little Pony
2349	MLRS	Multiple-Launch Rocket System
2350	MLT	Malta (ISO 3166 trigram)
2351	MLW	Mean Low Water (nautical charts)
2352	MLWN	Mean Low Water Neaps (nautical charts)
2353	MLWS	Mean Low Water Springs (nautical charts)
2354	Mm	Megametre
2355	mm	Millimetre
2356	MMEV	Multi-Mission Effects Vehicle
2357	MMI	Magical MonkeyZ Inc.
2358	MMI	Man-Machine Interface
2359	MMI	McLean Meditation Institute
2360	MMIC	McLean Meditation Institute Certified
2361	MMO	Massively Multiplayer Online (computer game)
2362	MMOR	Master of Management in Operations Research
2363	MMORPG	Massively multiplayer online role-playing game
2364	MMPR	Mighty Morphin Power Rangers
2365	MMS	Multimission Modular Spacecraft
2366	Mn	Manganese
2367	mN	Millinewton
2368	MNB	Multinational Brigade
2369	MNE	Montenegro (ISO 3166 trigram)
2370	MNMF	Multi-National Maritime Force
2371	MNP	Northern Mariana Islands (ISO 3166 trigram)
2372	MNS	Mission Needs Statement
2373	Mo	Molybdenum
2374	MOA	Museum of Art (Brigham Young University)
2375	MOCAS	Mechanization Of Contract Administration Services
2376	MoD	Ministry of Defence (United Kingdom) and various other countries
2377	modem	Modulator-Demodulator
2378	Moe	Marvel of entertainment
2379	MOE	Measure Of Effectiveness
2380	MOF	Ministry of Finance (Japan)
2381	MOFA	Ministry of Foreign Affairs (Japan)
2382	MOID	Minimum Orbital Intersection Distance
2383	MOJWA	Movement for Oneness and Jihad in West Africa
2384	MOLO	Mobile Other Licensed Operator (UK)
2385	MOM	Master's Degree in Oriental medicine
2386	MOM	Message Oriented Middleware
2387	MoM	Multiple of the median
2388	MoMA	Museum of Modern Art (NYC)
2389	MOND	Modified Newtonian Dynamics
2390	MOO	Measure Of Outcome
2391	MOPP	Mission-Oriented Protective Posture
2392	MORP	Meteorite Observation and Recovery Project
2393	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2394	MOT	Ministry of Transport (UK)
2395	MOTA	Member of the Orthodontic Technicians Association
2396	MOTESS	Moving Object and Transient Event Search System
2397	MOU	Memorandum Of Understanding
2398	MOW	Maintenance of way (also MW)
2399	MOZ	Mozambique (ISO 3166 trigram)
2400	MPa	Megapascal
2401	mPa	Millipascal
2402	MPAA	Motion Picture Association of America
2403	MPEC	Minor Planet Electronic Circular
2404	MPEG	Motion Pictures (Coding) Experts Group
2405	MPEV	Multi-Purpose Engineering Vehicle
2406	MPF	Maritime Prepositioning Force
2407	MPFC	Medial PreFrontal Cortex
2408	MPG	Miles Per Gallon
2409	MPMC	Medial PreMotor Cortex
2410	MPSI	Member of the Pharmaceutical Society of Ireland
2411	MPSoC	MultiProcessor System-on-Chip
2412	MPSRON	Maritime Propositioning Ship Squadron
2413	MR	Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2414	MRAV	Multi-Role Armoured Vehicle
2415	MRBM	Medium Range Ballistic Missile
2416	MRC	Maintenance Requirements Card
2417	MRD	Motorized Rifle Division
2418	MRGW	Medium-Range Guided Weapon
2419	MRI	Magnetic Resonance Imaging
2420	MRL	Multiple Rocket Launcher
2421	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2422	MRS	Magnetic Resonance Spectroscopy
2423	MRSA	Methicillin-resistant Staphylococcus aureus
2424	MRTFB	U.S. Major Range and Test Facility Base
2425	Ms	Megasecond
2426	mS	Millisiemens
2427	MSD	Minimum Safe Distance
2428	MSDB	Multi Source Data Base
2429	MSE	Multiple Subscriber Element
2430	MSG	Message
2431	MSLP	Mean Sea Level Pressure
2432	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2433	MSO	Multiple System Operator
2434	MSPB	Merit Systems Protection Board
2435	MSSA	Methicillin-susceptible Staphylococcus aureus
2436	Mt	Meitnerium
2437	mT	Millitesla
2438	MTBF	Mean time between failures
2439	MtF	Male-to-female transsexual
2440	MTG	Magic: The Gathering
2441	MTQ	Martinique (ISO 3166 trigram)
2442	MTT	Methylthiazol tetrazolium (assay)
2443	MTWS	MAGTF Tactical Warfare System
2444	MUS	Mauritius (ISO 3166 trigram)
2445	mV	Millivolt
2446	MVC	Missouri Valley Conference
2447	MVFC	Missouri Valley Football Conference
2448	MVNO	Mobile virtual network operator
2449	mW	Milliwatt
2450	MWESH	Machismo Wizards Extended SHelter (operating system)
2451	MWI	Malawi (ISO 3166 trigram)
2452	MWOA	Mount Wilson Observatory Association
2453	MWTB	Mounted Warfare Test Bed
2454	MY	Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2455	MYOB	Mind Your Own Business
2456	MYS	Malaysia (ISO 3166 trigram)
2457	MYT	Mayotte (ISO 3166 trigram)
2458	n	Nano
2459	N3F	National Fantasy Fan Federation
2460	nA	Nanoampere
2461	Na	Sodium (Latin Natrium)
2462	NAA	N-Acetylaspartate
2463	NAAD	North American Air Defense
2464	NAAQS	National Ambient Air Quality Standards
2465	NAAWS	NATO Anti-Air Warfare System
2466	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2467	NACC	North Atlantic Cooperation Council
2468	NACISA	NATO Communications and Information Systems Agency
2469	NACMA	NATO Air Command and Control System Management Agency
2470	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2471	NAEC	U.S. Naval Air Engineering Center
2472	NAFERA	Native American Free Exercise of Religion Act
2473	NAFLD	NonAlcoholic Fatty Liver Disease
2474	NAFO	Northwest Atlantic Fisheries Organization
2475	NAFTA	North American Free Trade Agreement
2476	NAGPRA	Native American Graves Protection and Repatriation Act
2477	NAICS	North American Industry Classification System
2478	NAIL	Neurotics Anonymous
2479	NAILS	National Airspace Integrated Logistics System
2480	NAIRU	Non Accelerating Inflation Rate of Unemployment
2481	NAK	Negative Acknowledge
2482	NAM	Namibia (ISO 3166 trigram)
2483	NAMBLA	North American Man-Boy Love Association
2484	NAMRL	Naval Aerospace Medical Research Laboratory
2485	NaN	Not A Number (computing)
2486	NAO	UK National Audit Office
2487	NAPS	Navy Acquisition Procedures Supplement
2488	NARA	(U.S.) National Archives and Records Administration
2489	NARAL	National Abortion Rights Action League
2490	NARDAC	Naval Regional Data Automation Center
2491	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2492	NARPV	National Association for Remotely Piloted Vehicles
2493	NASCAR	National Association for Stock Car Auto Racing
2494	NASDAQ	National Association of Securities Dealers Automated Quotations
2495	NASED	National Association of State Election Directors [1][2]
2496	NASH	Non-Alcoholic Steatohepatitis
2497	NASP	National Aerospace Plane
2498	NASS	National Association of Secretaries of State [3]
2499	NatGeo	National Geographic
2500	NaUKMA	National University of Kyiv-Mohyla Academy
2501	NAV	Navigation[al]
2502	NAVCAMS	Naval Communications Area Master Station
2503	NAVCC	National Audio-Visual Conservation Center
2504	NAVCENT	Naval Forces U.S. Central Command
2505	NAVDAC	Naval Data Automation Command
2506	NAVEUR	Naval Forces U.S. European Command
2507	NAVFOR	Naval Force
2508	NAVMACS	Naval Modular Automatic Communication Subsystem
2509	NAVNET	Navy Network
2510	NAVS	Non-Cooperative Airborne Vector Scoring
2511	NAVSAT	Navigation Satellite
2512	NAVSPACECOM	U.S. Navy Space Command
2513	NAVSPASUR	U.S. Naval Space Surveillance System
2514	NAVSTAR	Navigation Satellite Timing And Ranging
2515	NAVTACNET	Navy Tactical Network
2516	NAWC	U.S. Naval Air Warfare Center
2517	Nb	Niobium
2518	NBA	National Basketball Association
2519	NBL	National Basketball League (Australia)
2520	NBT	Nitroblue tetrazolium (assay)
2521	nC	Nanocoulomb
2522	NCA	National Command Authority
2523	NCAR	U.S. National Center for Atmospheric Research
2524	NCB	National Codification Bureau
2525	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2526	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2527	NCDDR	U.S. National Center for the Dissemination of Disability Research
2528	NCI	U.S. National Cancer Institute
2529	NCL	New Caledonia (ISO 3166 trigram)
2530	NCLR	National Council of La Raza
2531	NCMO	No Commitment Make Out
2532	NCO	Non-Commissioned Officer
2533	NCP	Net Contracted Purchases
2534	NCR	National Cash Register Co.
2535	NCTR	Non-Co-operative Target Recognition
2536	NCW	Network Centric Warfare
2537	Nd	Neodymium
2538	NDAA	U.S. National Defense Authorization Act
2539	NDBP	Non-Departmental Public Body (Scotland)
2540	NDP	New Democratic Party (Canada)
2541	NDS	Nintendo DS
2542	Ne	Neon
2543	NECTEC	National Electronics and Computer Technology Center (Thailand)
2544	NEMS	National Energy Modeling System (USDOE-EIA)
2545	NEPA	National Environmental Policy Act
2546	NER	Niger (ISO 3166 trigram)
2547	NERICA	New Rice for Africa
2548	NESP	NSA/CSS Enterprise Standards Program
2549	NET	National Educational Television
2550	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2551	NETL	(US) National Energy Technology Laboratory
2552	NETWARS	Network Warfare Simulation
2553	NEX	Navy EXchange
2554	nF	Nanofarad
2555	NF	Norfolk Island (ISO 3166 digram)
2556	NFER	National Foundation for Educational Research
2557	NFG	No Fucking Good
2558	NFHS	National Federation of State High School Associations
2559	NFI	Not F****** Interested
2560	NFK	Norfolk Island (ISO 3166 trigram)
2561	Nfld	Newfoundland
2562	NFPA	National Fluid Power Association (United States)
2563	NFT	No Further Text
2564	NGATS	New Generation Army Targetry System
2565	NGH	Northern General Hospital
2566	NGO	non-governmental organization
2567	NGS	Naval Gunfire Support
2568	nH	Nanohenry
2569	NHANES	National Health and Nutrition Examination Survey
2570	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2571	NHB	No Holds Barred radio (Link)
2572	NHL	National Hockey League
2573	NHRA	National Hot Rod Association
2574	NHS	National Health Service (UK)
2575	Ni	Nickel
2576	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2577	NIAG	NATO Industrial Advisory Group
2578	NIAID	National Institute of Allergies and Infectious Disease
2579	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2580	NIB	New In Box (Internet auction/trading listings)
2581	NIBP	Non-invasive blood pressure monitor
2582	NicA	Nicotine Anonymous
2583	NICAP	National Investigations Committee on Aerial Phenomena
2584	NICE	UK. National Institute for Health and Clinical Excellence
2585	NICHD	National Institute of Child Health and Human Development [4]
2586	NICP	National Inventory Control Point
2587	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2588	NIDRR	National Institute on Disability Research and Rehabilitation
2589	NIEHS	National Institute of Environmental Health Sciences
2590	NIIN	National Item Identification Number
2591	NIMA	National Imagery and Mapping Agency (became NGA)
2592	NIMBY	Not In My Back Yard (See NOME)
2593	NIMG	Not In My Generation
2594	NIN	Nine Inch Nails (band)
2595	NIPR	National Institute of Polar Research (Japan)
2596	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2597	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2598	NISCAP	NSA Information System Certification and Accreditation Program
2599	NISER	National Institute of Science Education and Research
2600	NIST	National Institute of Standards and Technology
2601	NITFS	National Imagery Transmission Format Standard
2602	NIU	Niue (ISO 3166 trigram)
2603	nJ	Nanojoule
2604	NJ	New Jersey (postal symbol)
2605	NJHS	National Junior Honor Society
2606	NJPW	New Japan Pro Wrestling
2607	nK	Nanokelvin
2608	NKA	No Known Allergies
2609	nL	Nanolitre
2610	NLB	Non-Linear Battlefield
2611	NLD	Netherlands (ISO 3166 trigram)
2612	NLF	National Liberation Front (disambiguation)
2613	NLL	National Lacrosse League
2614	NLW	Non-Lethal Weapon
2615	nm	Nanometre
2616	NM	New Mexico (postal symbol)
2617	NMCI	Navy Marine Corps Intranet
2618	NMCS	Not Mission Capable Supply (SM&R code)
2619	NMD	U.S. National Missile Defense
2620	NMN	No middle name
2621	NMR	Nuclear Magnetic Resonance
2622	NMSG	NATO Modelling and Simulation Group
2623	nN	Nanonewton
2624	NNE	North North-East
2625	NNSA	U.S. National Nuclear Security Administration
2626	NNW	North North-West
2627	No	Nobelium
2628	NOAA	U.S. National Oceanic and Atmospheric Administration
2629	NOAF	Norwegian Air Force
2630	NOAO	National Optical Astronomy Observatory
2631	NOC	UK. National Oceanography Centre
2632	NODEF	NATO Oceanographic Data Exchange Format
2633	NOGI	New Orleans Grande Isle (award for diving)
2634	NOLF	Navy OutLying Field
2635	NOME	Not on Mars Either
2636	NOME	Not on Mars Either (see NIMBY)
2637	NOR	Norway (ISO 3166 trigram)
2638	NORELPREF	No religious preference
2639	NORTHAG	Northern Army Group
2640	NOSA	NATO OSI Security Architecture
2641	NOTAFLOF	No One Turned Away For Lack Of Funds
2642	NOW	National Organization for Women
2643	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2644	NPB	Nippon Professional Baseball
2645	NPCS	Non-Passenger Coaching stock (in Railways)
2646	NPD	Nationaldemokratische Partei Deutschlands (German)
2647	NPDI	New Product Development and Introduction
2648	NPG	Needline/Network Participation Group
2649	NPH	Normal Pressure Hydrocephalus
2650	NPO	nothing by mouth
2651	NPOV	Neutral Point Of View
2652	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2653	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2654	NRA	National Rifle Association
2655	NRAO	National Radio Astronomy Observatory
2656	NRDC	(U.S.) Natural Resources Defense Council
2657	NREL	U.S. National Renewable Energy Laboratory
2658	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2659	NRMP	National Resident Matching Program (U.S. medicine)
2660	NRO	U.S. National Reconnaissance Office
2661	NRT	Near Real Time
2662	NRU	Nauru (ISO 3166 trigram)
2663	ns	Nanosecond
2664	nS	Nanosiemens
2665	NSABB	National Science Advisory Board for Biosecurity
2666	NSAID	Non-Steroidal Anti-Inflammatory Drug
2667	NSB	Norges Statsbaner (Norwegian State Railways)
2668	NSC	National Security Council
2669	NSDL	National Science Digital Library (US)
2670	NSG	National System for Geospatial-Intelligence
2671	NSN	National Stock Number
2672	NSNA	National Student Nurses' Association
2673	NSO	National Standardization Office (ABCA)
2674	NSS	(U.S.) Naval Simulation System
2675	NST	(UK) Nimrod Software Team
2676	NSTAC	National Security Telecommunications Advisory Committee
2677	NSW	New South Wales (postal symbol)
2678	nT	Nanotesla
2679	NTDS	Naval Tactical Data System
2680	NTP	Network Time Protocol
2681	NTR	Network Time Reference
2682	NTRA	National Thoroughbred Racing Association
2683	NTSB	National Transportation Safety Board
2684	NTV	Non-Tactical Vehicle
2685	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2686	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2687	NUTS	Nuclear Utilization Target Selection
2688	NUWC	U.S. Naval Undersea Warfare Center
2689	nV	Nanovolt
2690	NVEOL	Night Vision and Electro-Optics Laboratory
2691	NVG	Night Vision Goggles
2692	NVL	Night Vision Laboratory
2693	nW	Nanowatt
2694	NW	North-West
2695	NW	Nuclear Weapon
2696	NWA	National Wrestling Alliance
2697	NWF	National Wildlife Federation
2698	NWFZ	Nuclear-Weapon-Free Zone
2699	NWHN	U.S. National Women's Health Network
2700	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2701	NWOAHM	New Wave of American Heavy Metal
2702	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2703	NWRA	National Wildlife Rehabilitators Association
2704	NWSL	National Women's Soccer League (U.S.)
2705	NWT	North-West Territories
2706	NXA	21st arcade game in the Pump It Up series
2707	NXD	Native XML
2708	NXE	New Xbox Experience
2709	NXG	New Cross Gate station
2710	NXL	National XBall League
2711	NXN	Nike Cross Nationals
2712	NY	New York (postal symbol)
2713	NYC	New York City
2714	NYHA	New York Heart Association
2715	NYO	National Youth Orchestra of Great Britain
2716	NYSE	New York Stock Exchange
2717	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2718	NZC	New Zealand Cricket
2719	NZL	New Zealand (ISO 3166 trigram)
2720	NzL	Noze looan (online/event listings)
2721	NZOSS	New Zealand Open Source Society
2722	NZRU	New Zealand Rugby Union
2723	OAC	On Approved Credit
2724	OAP	Old Age Pensioner (UK)
2725	OARSI	Osteoarthritis Research Society International
2726	OAS	Organization of American States
2727	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2728	OASIS	Ontario Association of Sewage Industry Services
2729	OASP	Operational Analysis Support Paper/Plan
2730	OAU	Organization for African Unity
2731	OBE	Officer of the Order of the British Empire
2732	OBX	Outer Banks (North Carolina)
2733	OC	Officer Commanding
2734	OCD	Obsessive-Compulsive Disorder
2735	OCFS	Oracle Cluster File System
2736	OCFS2	Oracle Cluster File System Release 2
2737	OCMCC	[2] Orchard County MCC
2738	OCN	Oncology Certified Nurse
2739	OCO	Oort Cloud Object
2740	OCR	Optical Character Recognition
2741	OCS	see entry
2742	ODAS	OCA-DLR Asteroid Survey
2743	ODBC	Open DataBase Connectivity
2744	OEA	(U.S.) Office of Economic Adjustment
2745	OECD	Organisation for Economic Co-operation and Development (international)
2746	OED	Oxford English Dictionary
2747	OEG	Operation Exposure Guidance
2748	OEIS	On-Line Encyclopedia of Integer Sequences
2749	OEM	Original Equipment Manufacturer
2750	OFA	Occipital Face Area
2751	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2752	OGC	Open Geospatial Consortium
2753	OGD	Other Government Department
2754	OGO	Other Government Organization
2755	OH	Ohio (postal symbol)
2756	OHC	OverHead-Cam engine
2757	OHHLA	Original Hip-Hop Lyrics Archive
2758	OHIP	Ontario Health Insurance Plan
2759	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2760	OHP	Observatoire de Haute-Provence
2761	OHSS	Ovarian Hyperstimulation Syndrome
2762	OIC	Officer In Charge
2763	OIF	Operation Iraqi Freedom
2764	OIOC	Oriental & India Office Collections (in the British Library)
2765	OJT	On-the-Job Training
2766	OKC	Oklahoma City
2767	OLED	Organic Light-Emitting Diode
2768	OLS	Operational Linescan System
2769	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2770	OME	Osaka Mercantile Exchange
2771	OMFG	Oh My Fucking God
2772	OMG	Oh My God or Or My Gosh
2773	OMGW	Oh My Gosh it's Windy
2774	OMN	Oman (ISO 3166 trigram)
2775	OMNCS	U.S. Office of the Manager for the National Communications System
2776	OMP	Order of Mapungubwe in Platinum
2777	OMS	Order of Mapungubwe in Silver
2778	OMT	Object Model Template
2779	ON	Ontario (postal symbol)
2780	ONC	Orthopaedic Nurse Certified
2781	ONG	Orthodontic National Group
2782	ONI	(U.S.) Office of Naval Intelligence
2783	ONS	Operational Needs Statement
2784	OOAD	Object Oriented Analysis and Design
2785	OOBE	Out-of-body experience
2786	OOCL	Orient Overseas Container Line
2787	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2788	OOF	Out of Facility
2789	OOMF	One Of My Followers
2790	OOO	Out Of the Office
2791	OOTW	Operations Other Than War
2792	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
2793	OPAC	Online Public Access Catalogue
2794	OPCON	Operational control
2795	OPCW	Organisation for the Prohibition of Chemical Weapons
2796	OPEC	Organization of the Petroleum Exporting Countries
2797	OPFOR	Opposing force
2798	OPINTEL	Operational Intelligence
2799	OPLAN	Operation plan (also OpPlan)
2800	OPORD	Operation order
2801	OPSEC	Operations security,Open Platform for Security
2802	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2803	OPTAR	Operational target
2804	OPV	Offshore Patrol Vessel
2805	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)
2806	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
2807	ORAU	Oak Ridge Associated Universities
2808	ORB	Object Request Broker
2809	ORBAT	Order of Battle
2810	ORD	Office of Research and Development,Operational Requirements Document
2811	ORF	Operational iness Float
2812	ORISE	Oak Ridge Institute for Science and Education
2813	ORNL	Oak Ridge National Laboratory
2814	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
2815	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2816	OS	Operating System
2817	Os	Osmium
2818	OSA	Order of St. Augustine
2819	OSCE	Organisation for Security and Cooperation in Europe
2820	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2821	OSDL	Open Source Development Labs
2822	OSE	Own Separate Entrance
2823	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2824	OSETI	Optical SETI also Optical SETI
2825	OSHA	Occupational Safety and Health Administration
2826	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2827	OSIA	(U.S.) On-Site Inspection Agency
2828	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)
2829	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2830	OSM	One Saturday Morning
2831	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2832	OSPA	Operations Security Professional's Association site of OSPA
2833	OSPA	Oregon School Psychologists Association [3]
2834	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2835	OSU	Ohio State University,Oklahoma State University
2836	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2837	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2838	OTC	Over-The-Counter (drugs)
2839	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2840	OTEA	(U.S. Army) Operational Test Evaluation Agency
2841	OTI	Office of Transition Initiatives (United States Agency for International Development)
2842	OTOH	On The Other Hand
2843	OTS	Off the scale,sexually untouchable except for a lot of money
2844	OTSBH	Over The Shoulder Boulder Holder
2845	OTW	On The Way
2846	OTYBL	Over To You Blue Leader
2847	OTYRL	Over To You Red Leader
2848	OU	University of Oklahoma
2849	OW	Old Wykehamist
2850	OWN	Oprah Winfrey Network
2851	OX	IATA code for Orient Thai Airlines
2852	OXC	Optical cross-connect
2853	OXM	Official Xbox Magazine
2854	OXT	Oxytocin
2855	OZ	(?) Australia
2856	p	pico
2857	P2P	Peer-to-peer (networking)
2858	pA	picoampere
2859	PAA	Position Area for Artillery
2860	PABX	Private Automated Branch eXchange (company phone system)
2861	PACOM	(U.S.) Pacific Command
2862	PADI	Professional Association of Diving Instructors
2863	PAEK	PolyArylEtherKetone
2864	PAFC	Plymouth Argyle Football Club
2865	PAH	Polycyclic aromatic hydrocarbon
2866	PAHO	Pan American Health Organization
2867	PAK	Pakistan (ISO 3166 trigram)
2868	PAM	Precision Attack Missile
2869	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2870	PARC	Palo Alto Research Center
2871	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2872	PARP	(NATO Partnership for Peace) Planning And Review Process
2873	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2874	PAS	See entry
2875	PASR	Personnel Accounting and Strength Reporting
2876	PATH	Port Authority Trans-Hudson
2877	PAYD	Pay As You Drive
2878	PAYE	Pay As You Earn
2879	Pb	Lead (Latin Plumbum)
2880	PB	PolyButylene
2881	PBB	PolyBrominated Biphenyl
2882	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2883	PBD	PolyButaDiene
2884	PBDE	PolyBrominated Diphenyl Ether
2885	PBI	PolyBenzImidazole
2886	PBN	PolyButylene Naphthalate
2887	PBOH	Please Become Old History
2888	PBT	PolyButylene Terephthalate
2889	PBX	Private Branch eXchange (company phone system)
2890	pC	picocoulomb
2891	PCAS	Planet-Crossing Asteroid Survey
2892	PCB	see entry
2893	PCCB	Porsche Ceramic Composite Brake
2894	PCCIP	President's Commission on Critical Infrastructure Protection
2895	PCE	PerChlorEthylene
2896	PCIe	Peripheral Component Interconnect Express (computer bus)
2897	PCL	Passive Coherent Location
2898	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2899	PCN	Pitcairn Islands (ISO 3166 trigram)
2900	PCPI	Physician Consortium for Performance Improvement (AMA)
2901	PCR	Polymerase chain reaction
2902	PCSSD	Pulaski County Special School District
2903	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
2904	Pd	Palladium
2905	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
2906	PDL	Pure Dumb Luck (Texan punk band)
2907	PDN	Pull-Down Network
2908	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
2909	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
2910	PE	Professional Engineer
2911	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
2912	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
2913	PEEK	PolyEtherEtherKetone
2914	PEET	Partnerships for Enhancing Expertise in Taxonomy
2915	PEK	PolyEtherKetone
2916	PEPFAR	President's Emergency Plan For AIDS Relief
2917	PER	Peru (ISO 3166 trigram)
2918	perl	usually lower case Practical Extraction and Report Language
2919	PES	PolyEtherSulfone
2920	PEST	UK Public Engagement with Science and Technology
2921	PETE	PolyEthyleneTErephthalate
2922	PETP	PolyEthyleneTerePhthalate
2923	pF	picofarad
2924	PFD	Permanent Fund Dividend = personal flotation device
2925	PFE	Permanent Forest Estate
2926	PfP	Partnership for Peace
2927	Pg	petagram
2928	pg	picogram
2929	PGCE	Postgraduate Certificate in Education
2930	PGD	Pre-implantation Genetic Diagnosis
2931	PGENI	Pharmaco-Genetics for Every Nation Initiative
2932	PGH	Pre-implantation Genetic Haplotyping
2933	PGM	Precision-Guided Munition
2934	PGP	Pretty Good Privacy
2935	PHL	Philippines (ISO 3166 trigram)
2936	PHQ	Patient Health Questionnaire
2937	Pi	Pebi
2938	PIB	PolyIsoButylene
2939	PIC	Person In Charge
2940	PICNIC	Problem In Chair Not In Computer
2941	PICS	Private Investment Capital Subscription
2942	PIF	Partners in Flight
2943	PIG	Pipeline Inspection Gauge
2944	PIN	Personal Identification Number
2945	PINF	People In Need Foundation (Czech charitable organisation)
2946	PIPA	Program on International Policy Attitudes
2947	PIR	Priority Intelligence Requirement
2948	PIRA	Provisional Irish Republican Army
2949	PIREPS	Pilot Reports
2950	PITA	Pain In The Ass
2951	PJ	petajoule
2952	pJ	picojoule
2953	PJHQ	Permanent Joint Headquarters
2954	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
2955	PKI	Public Key Infrastructure (cryptography)
2956	PKU	Phenylketonuria
2957	pL	picolitre
2958	PLAID	Precision Location and Identification
2959	PLB	Personal Locator Beacon
2960	PLC	Public Limited Company (British)
2961	PLCC	Plastic Leaded Chip Carrier (electronics)
2962	PLD	Probable Line of Deployment
2963	PLEBS	People Lacking Everyday Basic Skills
2964	PLF	Parachute Landing Fall
2965	PLIF	Planar Laser-Induced Fluorescence
2966	PLL	Phase-Locked Loop (electronics)
2967	PLM	Polarized Light Microscope/Microscopy
2968	PLMBA	Phospholipid Bilayer Microarray
2969	Pln	Platoon
2970	PLO	Palestine Liberation Organization
2971	PLOKTA	Press Lots Of Keys To Abort
2972	PLP	Platonic Life Partner
2973	PLUTO	Pipe Line Under The Ocean
2974	PLW	Palau (ISO 3166 trigram)
2975	pm	picometre
2976	PMC	Primary Motor Cortex
2977	PMI	Positive Material Identification
2978	PMID	PubMed Identifier
2979	PMMA	PolyMethylMethAcrylate
2980	PMS	Premenstrual Syndrome
2981	PMSL	Piss Myself Laughing (Internet shorthand)
2982	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
2983	pN	piconewton
2984	PNAC	Project for the New American Century
2985	PNVS	Pilot Night Vision Sensor
2986	Po	Polonium
2987	PO	Post Office
2988	PO	Purchase Order
2989	POCD	Post-Operative Cognitive Dysfunction
2990	pod	Plain Old Documentation
2991	POFF	Plain Old Flat File
2992	POGO	Project On Government Oversight
2993	POI	Program Of Instruction
2994	POK	Plane Of Knowledge
2995	POLAD	Political Advice
2996	POMDP	Partially observable Markov decision process
2997	PooS	Poo Sniffer (Internet shorthand)
2998	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
2999	POSH	Port Outbound Starboard Home (alleged)
3000	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
3001	POT	Plane Of Tranquility
3002	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
3003	POTUS	President of the United States
3004	POV	Point of view
3005	POW	Prisoner of war
3006	PPASC	(U.S.) Plans and Program Analysis Support Center
3007	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
3008	PPLI	Precise Participant Location & Identification
3009	PPM	Project Planning and Management
3010	PPO	PolyPhenylene Oxide
3011	PPQN	Pulses Per Quarter Note (ditto)
3012	PPQT	Pre-Production Qualification Test
3013	PPV	Pay-per-view
3014	Pr	Pastor, Priest
3015	PR	Public Relations
3016	Prb	Presbyter
3017	PRBO	Point Reyes Bird Observatory
3018	PRC	People's Republic of China
3019	PRD	CERDEC Product Realization Directorate
3020	PRFG	Partial Fog (METAR Code)
3021	PRI	Puerto Rico (ISO 3166 trigram)
3022	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
3023	PRM	Personnel iness Management
3024	PRY	Paraguay (ISO 3166 trigram)
3025	Ps	petasecond
3026	pS	picosiemens
3027	PSG	Pacific Seabird Group
3028	PSI	Portable Source Initiative
3029	PSI	Pounds per square inch
3030	PSS	Personnel System Support
3031	PST	Pacific Standard Time (UTC-8 hours)
3032	PSU	Pennsylvania State University
3033	PsyOp	Psychological Operations
3034	pT	picotesla
3035	Pt	Platinum
3036	PTA	Parent-Teacher Association
3037	PTAL	Public Transport Accessibility Level
3038	PTES	People's Trust for Endangered Species
3039	PTFE	PolyTetraFluoroEthylene
3040	PTI	Pardon the Interruption
3041	PTSD	Post-Traumatic Stress Disorder
3042	Pu	Plutonium
3043	Pub	Publication
3044	PUG	PET Users Group
3045	PUN	Pull-Up Network
3046	PUP	Pull-Up Point
3047	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
3048	PV	petavolt
3049	pV	picovolt
3050	PvE	Player versus Environment
3051	PvP	Player versus Player
3052	PVR	Personal Video Recorder
3053	PvZ	Plants vs. Zombies
3054	PW	Palau (postal symbol; ISO 3166 digram)
3055	pW	picowatt
3056	PWA	Pirates With Attitude
3057	PWBA	Pension and Welfare Benefits Administration
3058	PWC	PieceWise Constant (describing a mathematical function)
3059	PwC	PricewaterhouseCoopers (international accounting firm)
3060	PWL	PieceWise Linear (describing a mathematical function)
3061	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
3062	PWR	Pressurized Water Reactor
3063	PX	Post eXchange
3064	PYF	French Polynesia (ISO 3166 trigram)
3065	PYMWYMI	Put Your Money Where Your Mouth Is
3066	Q1	First Quarter
3067	Q2	Second Quarter
3068	Q3	Third Quarter
3069	Q4	Fourth Quarter
3070	QA	Qatar (FIPS 10-4 country code; ISO 3166 digram)
3071	Qantas	Queensland And Northern Territory Aerial Services
3072	QAT	Qatar (ISO 3166 trigram)
3073	QB	Quarterback (football)
3074	QCD	Quantum ChromoDynamics
3075	QDR	Quadrennial Defense Review
3076	QEH	Queen Elizabeth's Hospital
3077	QK	Air Canada Jazz (IATA airline designator)
3078	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
3079	QPS	Quark Publishing System
3080	QSCAT	Quick Scatterometer satellite
3081	QSL	Québec Sign Language
3082	QSO	Quasi-Stellar Object
3083	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3084	Quasar	Quasi-stellar radio source
3085	QUB	Queen's University Belfast
3086	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3087	QZ	Awair (IATA airline designator)
3088	R2I	Resistance to Interrogation
3089	RA	Radio Australia
3090	Ra	Radium
3091	RAAF	Royal Australian Air Force
3092	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3093	RACK	Risk Aware Consensual Kink (SM phrase)
3094	Racon	RAdar beaCON
3095	RADA	Royal Academy of Dramatic Art
3096	Radar	Radio Detection And Ranging
3097	RadB	Rad51/Dmc1 homologous protein
3098	RADb	Routing Assets Data Base
3099	RADC	Region Air Defence Commander
3100	RAE	UK Royal Aircraft Establishment (-1991)
3101	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3102	RAM	Royal Air Maroc
3103	Ramark	RAdar MARKer
3104	RAOC	Rear Area Operation Centre
3105	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3106	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3107	RATELO	Radiotelephone Operator
3108	Rb	Rubidium
3109	RB	Running Back (football)
3110	RBI	Runs Batted In
3111	RC	see entry
3112	RCAF	Royal Canadian Air Force
3113	RCC	Rescue Co-ordination Centre
3114	RCCO	Royal Canadian College of Organists
3115	RCHA	Royal Canadian Horse Artillery (regiment)
3116	RCMP	Royal Canadian Mounted Police
3117	RD	Radio Disney
3118	RDD	Radiological Dispersion Device
3119	RDM	Remotely Delivered/Deliverable Mine
3120	RDT	Remote Digital Terminal
3121	RDV	Remote Detection Vehicle
3122	Re	Rhenium
3123	RE	Royal Engineers
3124	REACT	Remote Electronically Activated Control Technology
3125	REAM	Retired Educators Association of Minnesota
3126	RECCE	Reconnaissance
3127	REEF	Reef Environmental Education Foundation
3128	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3129	REME	Royal Electrical and Mechanical Engineers
3130	RERC	Rehabilitation Engineering Research Center
3131	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3132	REU	Réunion (ISO 3166 trigram)
3133	Rf	Rutherfordium
3134	RFD	Request for Documentation
3135	RFE	Request for Evaluation
3136	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3137	RFF	Right of First Refusal (legal term)
3138	RFID	Radio Frequency IDentification
3139	RFL	Rugby Football League
3140	RFP	Request for Proposal
3141	RFQ	Request for Quotation
3142	RFT	Request for Tender
3143	RFU	Rugby Football Union
3144	RG	Republican Guard
3145	Rg	Roentgenium
3146	RGB	Red Green Blue (colour model)
3147	RGBI	Red Green Blue Intensity (ditto)
3148	Rh	Rhodium
3149	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3150	RHIC	Relativistic Heavy Ion Collider
3151	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3152	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3153	RHU	Replacement Holding Unit
3154	RI	Rhode Island (postal symbol)
3155	RIAA	Recording Industry Association of America
3156	RIBA	Royal Institute of British Architects
3157	RIFA	Red imported fire ant
3158	RILA	Retail Industry Leaders Association
3159	RIMVS	Retinal Imaging Machine Vision System
3160	RINO	Republican In Name Only[1]
3161	RISC	Reduced Instruction Set Computer
3162	RJD	Reduced Julian Day
3163	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3164	RKO	Radio-Keith-Orpheum Pictures
3165	RLP	Recognised [Operating/Operational] Land Picture
3166	RLS	Restless Leg Syndrome
3167	RLY	Rally Point
3168	RM	see separate disambiguation page
3169	RMC	Robert Menzies College
3170	RMDA	Records Management and Declassification Agency
3171	RMP	Recognised [Operating/Operational] Maritime Picture
3172	RN	Radio Netherlands
3173	Rn	Radon
3174	RNA	RiboNucleic Acid
3175	RNAD	Royal Naval Armaments Depot (UK)
3176	RNPS	Radio Network Planning System
3177	RNZ	Radio New Zealand
3178	RNZI	Radio New Zealand International
3179	ROA	Rate Of Ascent
3180	ROE	Rules Of Engagement
3181	ROFLOL	Rolling On the Floor Laughing Out Loud
3182	ROH	Ring of Honor
3183	ROK	Republic of Korea
3184	ROP	Render Output Pipeline
3185	ROPE	Research Opportunity and Performance Evidence
3186	ROS	Reactive Oxygen Species
3187	ROU	Romania (ISO 3166 trigram)
3188	ROV	Remotely Operated Vehicle
3189	ROZ	Restricted Operations Zone
3190	RPA	Regional Plan Association
3191	RPD	Recognition-Primed Decision-making
3192	RPF	Rwandan Patriotic Front
3193	RPL	Reverse Polish Lisp
3194	rpm	revolutions per minute
3195	RPN	reverse Polish notation
3196	rps	revolutions per second
3197	RPV	Remotely Piloted Vehicle
3198	RQ	Puerto Rico (FIPS 10-4 territory code)
3199	RRB	Railroad Retirement Board
3200	RRN	Recurrence Rate Number
3201	RRP	Recurrent Respiratory Papillomatosis
3202	RRS	Racing Rules of Sailing
3203	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3204	RS	Russia (FIPS 10-4 country code)
3205	RSI	Repetitive Strain Injury
3206	RSJ	Rolled Steel Joist (construction)
3207	RSN	Real Soon Now (coined by author Jerry Pournelle)
3208	RSPB	(UK) Royal Society for the Protection of Birds
3209	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3210	RSR	Required Supply Rate
3211	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3212	RSRI	Red Sands Research Institute
3213	RSS	Really Simple Syndication
3214	RTA	Road traffic accident (British)
3215	RTBF	Radio-Télévision belge de la Communauté française
3216	RTF	Rich Text Format
3217	RTFM	the Fucking/Fine Manual
3218	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3219	RTI	Run-Time Infrastructure (Simulation)
3220	RTL	see entry
3221	RTP	Real-time Transport Protocol
3222	RTS	see entry
3223	RTT	Round Trip Timing
3224	RU	Russia (ISO 3166 digram)
3225	Ru	Ruthenium
3226	RUC	Royal Ulster Constabulary
3227	RUS	Russia (ISO 3166 trigram)
3228	RUSI	Royal United Services Institute for Defence Studies
3229	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3230	RWA	Rwanda (ISO 3166 trigram)
3231	RWH	Rain Water Harvesting
3232	RWR	Radar Warning Receiver
3233	RWS	Remote Weapon Station
3234	RX	Receive
3235	SBNO	Standing but not operating (in reference to amusement parks)
3236	SCOTUS	Supreme Court of the United States
3237	SCROTUS	So-called Ruler of the United States
3238	SDHC	Secure Digital High Capacity
3239	SDXC	Secure Digital eXtended Capacity
3240	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3241	SGOTUS	Second Gentleman of the United States
3242	SHO	Showtime (see also sho.com)
3243	SIRI	Service Interface for Real Time Information
3244	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3245	SLOTUS	Second Lady of the United States (the vice president's wife)
3246	SoCon	Southern Conference (U.S. college sports)
3247	STB	Surface Transportation Board[2]
3248	SWAC	Southwestern Athletic Conference
3249	SWAN	System for Wearable Audio Navigation
3250	SWAT	Special Weapons And Tactics
3251	SWF	Single White Female
3252	Ta	Tantalum
3253	TAACOM	U.S. Theater Army Area Command
3254	TAADCOORD	Theatre Army Air Defence Co-ordinator
3255	TAAR	Trace Amine-Associated Receptor
3256	TAC	U.S. Tactical Air Command (1946-1992)
3257	TACAN	Tactical Air Navigation
3258	TACCO	Tactical Coordinator
3259	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3260	TACDAR	Tactical Detection And Reporting
3261	TACSOP	Tactical SOP (Standing Operating Procedure)
3262	TADIL	Tactical Digital Information Link
3263	TAI	Target[ed] Area of Interest
3264	TAJ	Tom and Jerry
3265	TAJT	Tom and Jerry Tales
3266	TALES	Technical Advice and Lexicon for Enabling Simulation
3267	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3268	TANP	Terrain-Aware Network Planner
3269	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)
3270	TAPPS	Texas Association of Private and Parochial Schools
3271	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3272	TAS	Tasmania (postal symbol)
3273	TASER	Thomas A. Swift's Electric Rifle
3274	TASM	Tactical Air-to-Surface Missile
3275	TAT	Tourism Authority of Thailand
3276	TATP	TriAcetone TriPeroxide
3277	TATT	Tired All The Time (medical diagnosis in-joke)
3278	Tb	Terbium
3279	TB	Tuberculosis
3280	TBA	to be announced
3281	TBBPA	TetraBromoBisPhenol-A
3282	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3283	TBF	to be fair
3284	TBH	To Be Honest
3285	TBL	Turkish Basketball League
3286	TBS	Turner Broadcasting System
3287	TBT	Tributyltin
3288	Tc	Technetium
3289	TCAA	Top Counter-Assault Agents
3290	TCAS	Traffic Collision Avoidance System
3291	TCCCS	Tactical Command,Control and Communication System
3292	TCD	Chad (ISO 3166 trigram)
3293	TCHD	Truck Cargo Heavy Duty
3294	TCL	Tool Command Language
3295	TCM	Turner Classic Movies
3296	TCU	Texas Christian University
3297	TCW	Tasty Coma Wife
3298	TCWMS	Tele-Center Workforce Management System
3299	TDA	The Disney Afternoon
3300	TDL	Tactical Data Link
3301	TDM	Time-Division Multiplexing
3302	TDMA	Time Division Multiple Access
3303	TDP	Technology Demonstration Programme
3304	TDRS	Tracking Data and Relay Satellite
3305	Te	Tellurium
3306	TEAL	Tasman Empire Airways Limited
3307	Team	Together everyone achieves more
3308	TEAMS	The East African Marine System (fiber optic cable)
3309	TED	Technology Entertainment Design prize
3310	TENCAP	Tactical Exploitation of National Capabilities
3311	TERS	Tactical Event Reporting System
3312	TES	Tactical Event System
3313	TEST	Thesaurus of Engineering and Scientific Terms
3314	TEU	Twenty-foot equivalent unit (cargo capacity)
3315	TeVeS	Tensor Vector Scalar theory
3316	TFMPP	Trifluorophenylmethylpiperazine
3317	TFR	Total Fertility Rate
3318	TFT	Thin-Film Transistor
3319	Tg	Teragram
3320	TG	Togo (ISO 3166 digram)
3321	TGO	Togo (ISO 3166 trigram)
3322	Th	Thorium
3323	THA	Thailand (ISO 3166 trigram)
3324	THAAD	Terminal High Altitude Area Defence
3325	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3326	THEL	Tactical High Energy Laser ACTD
3327	THG	Tetrahydrogestrinone
3328	TIA	Total Information Awareness initiative
3329	TIA	Transient Ischemic Attack
3330	TIALD	Thermal Imaging and Airborne Laser Designation
3331	TIBS	Tactical Information Broadcast System
3332	TIC	Troops In Contact
3333	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3334	TINC	There Is No Cabal
3335	TIP	Thermal Identification Panel
3336	tits	Toes in the Sand
3337	TJD	Truncated Julian Day
3338	TJK	Tajikistan (ISO 3166 trigram)
3339	TKL	Tokelau (ISO 3166 trigram)
3340	TKM	Turkmenistan (ISO 3166 trigram)
3341	Tl	Thallium
3342	TLA	Three-Letter Abbreviation/Acronym
3343	TLAM	Tomahawk Land Attack Missile
3344	TLATOJL	The Life and Times of Juniper Lee
3345	TLPM	T1 Line Performance Monitor
3346	Tm	Terametre
3347	TMAP	Texas Medication Algorithm Project
3348	TMC	The Movie Channel
3349	TMD	Theatre Missile Defence
3350	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3351	TMI	Too Much Information
3352	TMJ	TemporoMandibular Joint (syndrome)
3353	TMNT	Teenage Mutant Ninja Turtles
3354	TMPG	Transparent Multi-Platform Gateway
3355	TMR	Twin Main Rotors (helicopter type)
3356	TMS	Transcranial Magnetic Stimulation
3357	TMT	Thirty Meter Telescope
3358	TMTOWTDI	There's Than One Way To Do It (from Perl)
3359	TNA	Total Nonstop Action Wrestling
3360	TNO	Trans-Neptunian Object
3361	TOBS	Time of OBServation
3362	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3363	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3364	TOGS	Thermal Observation Gunnery Sight
3365	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3366	TON	Tonga (ISO 3166 trigram)
3367	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
3368	TOT	Time On Target
3369	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3370	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3371	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3372	TPI	The point is
3373	TPO	Thrombopoietin
3374	TPS	The Pennington School
3375	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3376	TQ	Top Qualifier (similar to Pole Position in car racing)
3377	TRA	Technology iness Assessment
3378	TRAC	(U.S. Army) TRADOC Analysis Center
3379	TRACON	Terminal Radar Approach Control
3380	TRADOC	(U.S. Army) Training and Doctrine Command
3381	TRANSCOM	U.S. Transportation Command
3382	TRAP	Tactical Receive equipment and related Applications
3383	TRASANA	TRADOC Systems Analysis Agency
3384	TRD	Towed Radar Decoy
3385	TRIGAT	Third Generation Antitank (missile)
3386	TRL	Technology readiness level
3387	Trp	Troop
3388	TRU	Transuranic
3389	TRUEX	Training in Urban Environment Exercise
3390	TRW	Thompson Ramo Wooldridge Inc.
3391	Ts	Terasecond
3392	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3393	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3394	TSEC	Transmission Security Encryption Code
3395	TSL	Transportation Security Laboratory
3396	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3397	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3398	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3399	TSR	Terminate and Stay Resident
3400	TSSIA	The Subject Says It All
3401	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3402	TTCT	Torrance Tests of Creative Thinking
3403	TTFN	Ta Ta For Now
3404	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3405	TTO	Trinidad and Tobago (ISO 3166 trigram)
3406	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3407	TTTEAF	Thomas the Tank Engine and Friends
3408	TTY	TeleTYpewriter (Printer)
3409	TTYL	To You Later (Internet slang)
3410	TTZ	Tetrazolium
3411	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3412	TUC	Trades Union Congress
3413	TUG	TeX Users Group
3414	TUI	Text-based user interface (cf. CLI),among other uses
3415	TUN	Tunisia (ISO 3166 trigram)
3416	TUNS	Technical University of Nova Scotia
3417	TUR	Turkey (ISO 3166 trigram)
3418	TUSK	Tank Urban Survival Kit
3419	TUV	Tuvalu (ISO 3166 trigram)
3420	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3421	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3422	TVA	Tennessee Valley Authority
3423	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3424	TVR	TreVor (Wilkinson) Racing
3425	TVS	Tornado vortex signature
3426	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3427	TWAIN	Technology Without An Interesting Name
3428	TWE	Trans World Entertainment
3429	TWI	The Welding Institute
3430	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
3431	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3432	TWP	Technical Working Paper
3433	TWS	Thermal Weapon Sight,Track While Scan
3434	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3435	TXV	Thermostatic Expansion Valve
3436	TYT	Take Your Time,Internet chat abbreviation
3437	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3438	TZA	Tanzania (ISO 3166 trigram)
3439	TZC	Tetrazolium chloride
3440	U	Uranium
3441	UA	Ukraine (ISO 3166 digram) Unit of Action
3442	UAAP	University Athletic Association of the Philippines
3443	UAB	University of Alabama at Birmingham
3444	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3445	UBC	United Baptist Church,University of British Columbia
3446	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3447	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3448	UCBSA	United Cricket Board of South Africa
3449	UCF	University of Central Florida
3450	UCLA	University of California at Los Angeles
3451	UCLES	University of Cambridge Local Examinations Syndicate
3452	UCR	University of California at Riverside
3453	UCR	University of Costa Rica
3454	UCS	Union of Concerned Scientists
3455	UCSB	University of California at Santa Barbara
3456	UCSD	University of California at San Diego
3457	UDAS	Uppsala-DLR Asteroid Survey
3458	UDDI	Universal Description,Discovery and Integration
3459	UDTS	Uppsala-DLR Trojan Survey
3460	UE	Unit of Employment
3461	UEFA	Union of European Football Associations
3462	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3463	UFC	Ultimate Fighting Championship
3464	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3465	UG	Uganda (ISO 3166 and FIPS 10-4 country code digram)
3466	UGA	Uganda (ISO 3166 trigram)
3467	UGV	Unmanned Ground Vehicle
3468	UHF	Ultra High Frequency
3469	UHMW	Ultra-High Molecular Weight
3470	UHRB	Ultra-High Resolution Building (simulation)
3471	UIC	University of Illinois at Chicago
3472	UID	User ID
3473	UIUC	University of Illinois at Urbana-Champaign
3474	UJTL	Universal Joint Task List
3475	UKIP	United Kingdom Independence Party
3476	UKR	Ukraine (ISO 3166 trigram)
3477	UL	Underwriters Laboratories
3478	ULF	Ultra Low Frequency
3479	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3480	UMCP	Unit Maintenance Collection Point
3481	UMES	University of Maryland Eastern Shore
3482	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3483	UMIST	University of Manchester Institute of Science and Technology
3484	UMTS	Universal Mobile Telecommunications System
3485	UN	United Nations
3486	UNABOM	University and airline bomber (FBI case name)
3487	UNAIDS	(i/a) Joint United Nations Programme on HIV/AIDS
3488	UNAMSIL	United Nations Mission in Sierra Leone
3489	UNCF	United Negro College Fund
3490	UNCLOS	United Nations Convention on the Law of the Sea
3491	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3492	UNCTAD	United Nations Conference on Trade and Development
3493	UNDCP	United Nations Drug Control Programme
3494	UNDE	(i/a) Union of National Defence Employees (Canada)
3495	UNDP	United Nations Development Programme
3496	UNEP	United Nations Environment Programme
3497	UNFCCC	United Nations Framework Convention on Climate Change
3498	UNFICYP	United Nations Peacekeeping Force in Cyprus
3499	UNGEGN	United Nations Group of Experts on Geographical Names
3500	UNHCR	United Nations High Commission (er) for Refugees
3501	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3502	UNICRI	United Nations Interregional Crime and Justice Research Institute
3503	UNIDO	United Nations Industrial Development Organization
3504	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3505	UNMIK	United Nations Interim Administration Mission in Kosovo
3506	UNOSOM	United Nations Operations in Somalia
3507	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3508	UNRISD	United Nations Research Institute for Social Development
3509	UNSM	Union of Nova Scotian Municipalities
3510	UNTAC	United Nations Transitional Authority in Cambodia
3511	UNTAET	(i/a) United Nations Transitional Administration in East Timor
3512	UNU	United Nations University
3513	UPdM	Università Popolare della Multimedialità
3514	UPI	United Press International
3515	UPN	United Paramount Network
3516	UPU	Universal Postal Union
3517	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3518	URD	User Requirements Document
3519	URY	Uruguay (ISO 3166 trigram)
3520	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3521	USAF	United States Air Force
3522	USAFSPC	U.S. Air Force Space Command
3523	USAID	United States Agency for International Development
3524	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3525	USAREUR	United States Army Europe
3526	USB	Universal Serial Bus
3527	USCG	United States Coast Guard
3528	USDA	United States Department of Agriculture
3529	USDI	United States Department of the Interior
3530	USDOE	United States Department of Energy
3531	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3532	USEC	United States Enrichment Corporation
3533	USFL	United States Football League
3534	USFWS	United States Fish and Wildlife Service
3535	USGS	United States Geological Survey
3536	USIA	United States Information Agency
3537	USJFCOM	United States Joint Forces Command
3538	USMC	United States Marine Corps
3539	USMNT	United States men's national (soccer) team
3540	USN	United States Navy
3541	USNB	United States Naval Base
3542	USNG	United States National Grid
3543	USNH	United States Naval Hospital
3544	USNI	United States Naval Institute
3545	USNO	U.S. Naval Observatory
3546	USNOFS	United States Naval Observatory Flagstaff Station
3547	USNP	United States Newspaper Program
3548	USNR	United States Navy Reserve
3549	USNS	United States Naval Ship
3550	USNZ	University Sport New Zealand
3551	USPS	United States Postal Service
3552	USPTO	United States Patent and Trademark Office
3553	USS	United States ship (sometimes meaningless; see Star Trek)
3554	USSPACECOM	United States Space Command
3555	USSR	Union of Soviet Socialist Republics
3556	UST	Underground Storage Tank
3557	USTRANSCOM	United States Transportation Command
3558	USWNT	United States women's national (soccer) team
3559	UT	Universal Time
3560	UTEP	University of Texas at El Paso (pronounced you-tep)
3561	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3562	UUA	Unitarian Universalist Association
3563	UUID	Universally Unique Identifier (see also GUID)
3564	UUV	Unmanned Underwater Vehicle
3565	UW	University of Washington
3566	UWO	University of Western Ontario
3567	UWT	Under Water Telephone
3568	UWTG	Under Water Tug
3569	UWW	United World Wrestling
3570	UXO	Unexploded Ordnance
3571	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3572	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3573	UZB	Uzbekistan (ISO 3166 trigram)
3574	VACIS	Vehicle And Container Inspection System
3575	VACIS	Victorian Ambulance Clinical Information System
3576	VANOS	Variable Nockenwelle System
3577	VAO	Vienna Art Orchestra
3578	VBA	Visual Basic for Applications
3579	vCJD	Variant Creutzfeldt-Jakob Disease
3580	VCNO	(U.S.) Vice Chief of Naval Operations
3581	VCofS	Vice Chief of Staff
3582	VCR	Video cassette recorder
3583	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3584	VDFS	VisualSVN Distributed File System (VDFS)
3585	VE	Venezuela (FIPS 10-4 country code; ISO 3166 digram)
3586	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3587	VEN	Venezuela (ISO 3166 trigram)
3588	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3589	VfD	s for deletion (used in Wikipedia)
3590	VFM	Value For Money
3591	VFMO	Very Fast Moving Object (astronomy)
3592	VFT	Virtual Function Table
3593	VFW	Veterans of Foreign Wars
3594	VG	British Virgin Islands (ISO 3166 digram)
3595	VGB	British Virgin Islands (ISO 3166 trigram)
3596	VH1	Video Hits One
3597	VHF	Very High Frequency
3598	VIA	Versatile Interface Adapter
3599	VIDS	Visual Information Display System
3600	VII	7 (in Roman numerals)
3601	VIII	8 (in Roman numerals)
3602	VIN	(i/a) Vehicle Identification Number (ISO 3779)
3603	VIP	Very Important Person
3604	VISCII	VIetnamese Standard Code for Information Interchange
3605	VIT	Vellore Institute of Technology
3606	VIVO	Video In Video Out
3607	VJ	Video Jockey
3608	VLAD	Vertical Line Array DIFAR
3609	VLBA	Very Long Baseline Array
3610	VLF	Very Low Frequency
3611	VLIW	Very Long Instruction Word
3612	VLPFC	VentroLateral PreFrontal Cortex
3613	VLPMC	VentroLateral PreMotor Cortex
3614	VLSI	Very-large-scale integration
3615	VM	Vietnam (FIPS 10-4 country code)
3616	VMF	Marine Fighting Squadron of the United States Marine Corps
3617	VMF	Variable Message Format
3618	VMN	VentroMedial Nucleus (neurophysiology)
3619	VN	Vietnam (ISO 3166 digram)
3620	VNIR	Visible and Near InfraRed
3621	VNM	Vietnam (ISO 3166 trigram)
3622	VNS	see entry
3623	VOA	Voice of America
3624	VOIP	Voice Over Internet Protocol
3625	VOLT	Visual OpenType Layout Tool
3626	VON	Victorian Order of Nurses
3627	VOR	Voice of Russia
3628	VOX	Voice Operated oscillator
3629	VPOTUS	Vice President of the United States
3630	VPN	Virtual Private Network
3631	VR	Virtual Reality
3632	VRSG	Virtual Reality Scene Generator
3633	VSHORAD	Very Short Range Air Defence
3634	VSO	Voluntary Services Overseas
3635	VSR	Very Special Relativity
3636	VTC	Video Tele-Conference
3637	VTEC	Variable valve Timing and Electronic lift Control
3638	VTOL	Vertical Take-Off & Landing
3639	VUB	Vrije Universiteit Brussel (Belgian university)
3640	VUT	Vanuatu (ISO 3166 trigram)
3641	VVAF	Vietnam Veterans of America Foundation
3642	VW	Volkswagen
3643	VZ	Verizon Communications (NYSE code)
3644	W3C	World Wide Web Consortium
3645	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3646	WAAF	Women's Auxiliary Air Force (World War II UK)
3647	WACC	Weighted Average Cost of Capital (accounting)
3648	WACS	What-A-Cartoon! Show
3649	WAD	Weapons Alert Designator
3650	WAGGGS	World Association of Girl Guides and Girl Scouts
3651	WAL	see entry
3652	WAN	Wide area network
3653	WAP	Wireless Application Protocol
3654	WAPIMA	What a pain in my ass
3655	WAR	With All Respect
3656	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3657	WAYP	White And Yellow Pages
3658	Wb	Weber
3659	WBC	World Boxing Council
3660	WBE	Work Breakdown Element
3661	WBO	World Boxing Organization
3662	WCBO	World Chess Boxing Organisation
3663	WCBP	World Center for Birds of Prey
3664	WCL	World Confederation of Labour
3665	WCW	World Championship Wrestling
3666	WDIN	Wildlife Disease Information Node
3667	WDWR	Walt Disney World Resort
3668	WEBS	Weapon Effectiveness Battle Simulation
3669	WEC	World Extreme Cagefighting
3670	WEEE	Waste Electrical and Electronic Equipment
3671	WEF	World Economic Forum
3672	WEM	West Edmonton Mall
3673	WEU	Western European Union
3674	WEZ	Weapon Engagement Zone
3675	WF	Wallis and Futuna Islands (ISO 3166 digram)
3676	WFC	Women's Forage Corps (World War II UK)
3677	WFD	Weapon of Focused Destruction
3678	WFF	Wallops Flight Facility
3679	WFI	Water for Injection
3680	WFH	Working from home
3681	WFP	World Food Program
3682	WFZ	Weapons Free Zone
3683	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3684	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3685	WHI	Women's Health Initiative
3686	WHIP	Walks plus hits per inning pitched
3687	WHO	World Health Organisation
3688	WHS	(U.S.) Washington Headquarters Services
3689	WIIFM	What's in it for me?
3690	WIP	Work In Progress
3691	WIPO	World Intellectual Property Organization
3692	WIPP	[Nuclear] Waste Isolation Pilot Plant
3693	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3694	WKYP	Will Keep You Posted
3695	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3696	WLB	Women's Land Brigade (World War II Canada)
3697	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3698	WLOG	Without Loss Of Generality (see WOLOG)
3699	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3700	WMANUS	West Midlands Area National Union of Students
3701	WMD	World Movement for Democracy
3702	WMI	Wildlife Management Institute
3703	WMO	World Meteorological Organization
3704	WNA	World Nuclear Association
3705	WNF	Will Not Fix
3706	WNIT	Women's National Invitation Tournament
3707	WNW	West North-West
3708	WO	Warrant Officer
3709	WOF	Width of Fabric
3710	WOFT	Waste Of Fucking Time
3711	WOFTAM	Waste Of Fucking Time And Money
3712	WOI	Wheels Of Italy
3713	WOM	Write Only Memory
3714	WOS	Wilson Ornithological Society
3715	WOT	Waste Of Time
3716	WP	White Phosphorus (ammunition)
3717	WPB	War Production Board during World War II
3718	WPE	World Pork Expo
3719	WPK	Wider Peacekeeping
3720	WR	Wide Receiver (football)
3721	WRAC	Women's Royal Army Corps (World War II UK)
3722	WRAIR	Walter Reed Army Institute of Research
3723	WRBWWRM	We Best What We Most
3724	WRC	World Rally Championship
3725	WRC	World Religions Conference
3726	WRNG	Warning
3727	WRS	Worldwide Reference System
3728	WRT	NHS Workforce Review Team
3729	WRT	The Linksys routers whose model name start with 'WRT'
3730	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3731	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3732	WRT	Wireless Receiver/Transmitter ( computer networks/IT )
3733	WRT	Wireless Ronin Technologies (digital signage)
3734	WRT	World Rally Team
3735	WRT	Writer Response Theory
3736	WSC	Weapon System Catalogue
3737	WSDL	Web Services Description Language
3738	WSJ	(The) Wall Street Journal
3739	WSROC	Western Sydney Regional Organisation of Councils
3740	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3741	WSTC	Women Signallers Territorial Corps (World War II UK)
3742	WSW	West South-West
3743	WTC	World Trade Center
3744	WTF	What the fuck?; also What a Terrible Failure (android)
3745	WTFH	What The Fucking Hell
3746	WTH	What the Hell
3747	WTO	World Trade Organization
3748	WUBU2	What you been up to
3749	WV	West Virginia (postal symbol)
3750	WVA	World Veterinary Association
3751	WVIAC	West Virginia Intercollegiate Athletic Conference
3752	WVR	Women's Volunteer Reserve (World War II UK)
3753	WVSC	Women's Volunteer Service Corps (World War II Canada)
3754	WVU	West Virginia University
3755	WW	see entry
3756	WWE	World Wrestling Entertainment
3757	WWI	World War I
3758	WWII	World War II
3759	WWIII	World War III
3760	WWJD	What would Jesus do?
3761	WWS	Wheaton Warrenville South High School
3762	WWWF	World Wide Wrestling Federation
3763	WXO	Weather [Executive] Officer
3764	WY	Wyoming (postal symbol)
3765	WZ	Swaziland (FIPS 10-4 country code)
3766	XBML	eXtended Business Modelling Language
3767	XC	Ninety (in Roman numerals)
3768	XCBL	XML Common Business Library
3769	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3770	Xe	Xenon
3771	XFA	XML Forms Architecture
3772	XFC	Xtreme Fighting Championships
3773	XFD	Fighter aircraft made by Douglas
3774	Xfe	X File Explorer
3775	XFF	X-Forwarded-For
3776	XFG	Exfoliation glaucoma
3777	XFR	Automobile made by Jaguar
3778	XFT	X FreeType interface library
3779	XG	Automobile made by Hyundai
3780	XGA	Extended Graphics Array
3781	XGP	Extreme Game Player
3782	XHTML	eXtensible Hypertext Markup Language
3783	XI	Eleven (in Roman numerals)
3784	XII	Twelve (in Roman numerals)
3785	XIII	Thirteen (in Roman numerals)
3786	XIV	Fourteen (in Roman numerals)
3787	XIX	Nineteen (in Roman numerals)
3788	XJS	Automobile made by Jaguar
3789	XKB	X keyboard extension
3790	XKE	Automobile made by Jaguar
3791	XKR	Automobile made by Jaguar
3792	XML	eXtensible Markup Language
3793	XMSF	eXtensible Modelling and Simulation Framework
3794	XNA	X-No-Archive,Xeno Nucleic Acid
3795	XNC	X Northern Captain
3796	XNU	X is Not Unix
3797	XP	eXperience Point (role-playing games)
3798	XQJ	XQuery API for Java™
3799	XRAY	X-Ray
3800	XRML	eXtensible Rights Markup Language
3801	XS	Xiaolin Showdown
3802	XSL	eXtensible Style Language
3803	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3804	XUL	XML User Interface Language
3805	XV	Fifteen (in Roman numerals)
3806	XVI	Sixteen (in Roman numerals)
3807	XVII	Seventeen (in Roman numerals)
3808	XVIII	Eighteen (in Roman numerals)
3809	XWF	Xcitement Wrestling Federation
3810	XX	Twenty (in Roman numerals)
3811	Xyl	Xylobium
3812	XZN	Triple square screw driver
3813	y	Yocto-
3814	Y2K	Year Two Thousand
3815	yA	Yoctoampere
3816	Ya	Yottayear
3817	YaBPr	Yet another Brother Pat rant
3818	YABSLAG	Yet another boy singing like a girl
3819	YAC	Youth-Adult Committee
3820	YAFLA	Yet Another Five Letter Abbreviation
3821	YAP	Young Aspiring Professional
3822	YB	Youcef Benzouada (Southern Algerian name)
3823	Yb	Ytterbium
3824	yC	Yoctocoulomb
3825	YC	Yottacoulomb
3826	YDS	Yosemite Decimal System (climbing)
3827	YE	Yemen (ISO 3166 digram)
3828	YEM	Yemen (ISO 3166 trigram)
3829	yF	Yoctofarad
3830	YF	Yottafarad
3831	yg	Yoctogram
3832	Yg	Yottagram
3833	YGCO	Yamaneko Group of Comet Observers
3834	Ygo	Yu-Gi-Oh!
3835	yH	Yoctohenry
3836	YH	Yottahenry
3837	YHBT	You Have Been Trolled
3838	YHII	You Have It Inside
3839	YHS	Ya Hoor sur!
3840	Yi	Yobi
3841	Yippie	Youth International Party + suffix
3842	yJ	Yoctojoule
3843	YJ	Yottajoule
3844	yK	Yoctokelvin
3845	YK	Yottakelvin
3846	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
3847	yL	Yoctolitre
3848	YL	Yottalitre
3849	ym	Yoctometre
3850	Ym	Yottametre
3851	YMMD	You Make My Day
3852	yN	Yoctonewton
3853	YN	Yottanewton
3854	YOLO	You Only Live Once
3855	YPA	Yards per Pass Attempt (football statistic)
3856	YPIO	Your Problem Is Obvious
3857	YPO	Young Presidents' Organization
3858	ys	Yoctosecond
3859	yS	Yoctosiemens
3860	Ys	Yottasecond
3861	YS	Yottasiemens
3862	YSI	Young Scots for Independence
3863	yT	Yoctotesla
3864	YTD	Year-To-Date
3865	YTM	Yield to Maturity
3866	YTS	Youth Training Scheme
3867	YTT	Yoshi Topsy-Turvy
3868	Yuppie	Young Urban Professional + suffix
3869	yV	Yoctovolt
3870	YV	Yottavolt
3871	yW	Yoctowatt
3872	YW	Yottawatt
3873	YYH	YuYu Hakusho
3874	z	Zepto
3875	Z	Zetta
3876	zA	Zeptoampere
3877	ZAF	South Africa (ISO 3166 trigram)
3878	ZAMS	Zero age main sequence
3879	ZAS	Zylinder Abschaltung System
3880	ZBT	Zero-Balance Transfer (accounting)
3881	zC	Zeptocoulomb
3882	ZC	Zettacoulomb
3883	ZCM	(n) ZENworks Configuration Management
3884	ZCMK	Zone Control Master Key
3885	ZCU	Zimbabwe Cricket Union
3886	\a	Atto-