Abbreviations.com

We are the world's largest and most comprehensive directory and search engine for acronyms, abbreviations and initialisms on the Internet. Abbreviations.com holds hundreds of thousands of entries organized by a large variety of categories from computing and the Web to governmental, medicine and business and it is maintained and expanded by a large community of passionate editors. Read more about our awards and press coverage.

Academic & Science
Amateur Radio, Architecture, Biology, Chemistry, Degrees, Electronics, Geology, IEEE, Mathematics, Mechanics, Meteorology, Ocean Science, Physics, Universities»


Business & Finance
Accounting, Firms, International Business, Mortgage, NASDAQ Symbols, NYSE Symbols, Occupations & Positions, Professional Organizations, Stock Exchange, Tax»


Community
Conferences, Educational, Famous, Film Censorship, Genealogy, Housing, Law, Media, Museums, Music, Non-Profit Organizations, Religion, Schools, Sports, Unions»


Computing
Assembly, Databases, DOS Commands, Drivers, File Extensions, General, Hardware, Java, Networking, Security, Software, Telecom, Texting, Unix Commands»


Governmental
FBI, FDA, Military, NASA, Police, State & Local, Suppliers, Transportation, UN, US Gov.»


Internet
ASCII, Blogs, Chat, Domain Names, Emoticons, HTTP, MIME, Twitter, Wannas, Websites»


Miscellaneous
Chess, Clothes, Coins, Construction, Days, Farming, Food, Funnies, Gaming, Hobbies, Months, Photography, Plastics, Sci-Fi, Unit Measures, Journal Abbreviations»


Regional
Airport Codes, African, Alaska, Australian, Canadian, Cities, Countries, Currencies, European, Language Codes, Railroads, Tel. Country Codes, Time Zones, US States»


Medical
British Medicine, Dental, Drugs, Hospitals, Human Genome, Laboratory, Medical Physics, Neurology, Nursing, Oncology, Physiology, Prescription, Veterinary»


International
Arabic, Dutch, German, Greek, Guatemalan, French, Hebrew, Indonesian, Italian, Latin, Mexican, Polish, Romanian, Russian, Spanish, Tamil, Thai, Turkish»