Abbreviations.com

Abbreviations.com is 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 expanding daily.

To use this extension simply select a word on any web page you're visiting and click on the extension icon. A pop-up window will open with all possible explanations for the selected word.

Note: The extension will not work in tabs that were open prior to installation. After installing this extension, either reload your open tabs or restart Chrome.