Abbreviations & Acronyms

Abbreviations and Acronyms of the US Government - Use the FIND command or the directory to locate the acronym/abbreviation of interest. Also has links to the home pages of the agencies or programs listed.
Acronym and Abbreviation List - You may Search for an acronym and see its expansion or Search for a word in the expansions and see the resultant acronyms.
Acronym Finder - 72,000 acronyms/abbreviations & their meanings. A searchable database containing common acronyms and abbreviations about all subjects, with a focus on computers, technology, telecommunications, and the military. Reverse look-up is also available.
All that JAS: Journal Abbreviation Sources - "A registry of Web resources that list or provide access to the full title of journal abbreviations" - Arranged by subject.
BioABACUS - BioABACUS (Biotechnology ABbreviation & ACronym Uncovering Service) is a searchable database of abbreviations and acronyms in Biotechnology that contains terms in such categories as: Biochemistry, Bioinformatics, Cell Biology, Computers and Internet, Diseases, Grants, Journals, Laboratories, Medicine, Molecular Biology/Genetics, Neuroscience, Other Organizations, Professional Societies and US Government. You may search for biology-related journal names and abbreviations. A link to the journal's home page is provided when available.
EURODICAUTOM - You may search for terms or abbreviations in Danish, Dutch, English, Finnish, French, German, Greek, Italian, Latin, Portuguese, Spanish, or Swedish. Terms may be translated into another language if you wish. This site has journal title abbreviations but there is no indication of how many there are or where they come from.
The Great Abbreviations Hunt - 17,576 different three letter abbreviations are listed along with the expansion of each.
HSU Journal Abbreviation Lookup - A search of the 40,000 plus titles, abbreviations and ISSNs extracted from SFX. Updated monthly.
The Public Broadcasting Acronym Directory - A guide to the alphabet-soup of often-obscure names for organizations and technologies in public broadcasting and the electronic media. Includes addresses and phone numbers as well as links to web sites for organizations.
Scientific and Technical Acronyms, Symbols, and Abbreviations or Acronym Finder - Search for a specific acronym, browse an alphabetical list, or consult the reference table of special acronym types such as math and electrical symbols. Each acronym record includes a term, definition, and one or more subject categories such as Chemistry or Life Sciences.