Software that adds functionality to the Firefox Web browser. There are hundreds of Firefox extensions available, including toolbars, tab treatments, bookmark organizers and dictionaries. See browser ...

(2) The Firefox browser on a computer or mobile device. (3) A software enhancement to the Firefox browser. See Firefox extension. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction ...

Firefox OS (codenamed Boot to Gecko) is an open-source mobile operating system for smartphones and tablets, developed by Mozilla. It's unusual with the fact that it is designed to run HTML5 ...