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.
The Web's Largest Resource for
Acronyms & Abbreviations
A Member Of The STANDS4 Network
Quiz
The ultimate acronym test
»OOO
-
A. Our Original Opinion
-
B. Order Of Owls
-
C. Out Of Options
-
D. Out Of Office
Free, no signup required:
Add to Chrome
Get instant explanation for any acronym or abbreviation that hits you anywhere on the web!
Free, no signup required:
Add to Firefox
Get instant explanation for any acronym or abbreviation that hits you anywhere on the web!
Discuss everything about the Abbreviations.com website with the community:
Report Comment
We're doing our best to make sure our content is useful, accurate and safe.
If by any chance you spot an inappropriate comment while navigating through our website please use this form to let us know, and we'll take care of it shortly.
Attachment
You need to be logged in to favorite.
Log In