Define Word

Define Word looks up definition of selected text using any of several search engines. The list of engines is configurable. The pop-up menu text is configurable and can include the search term if desired. The extension is configurable to show the search page in a new page or tab, which can be foreground or background.

What is new in this release:

Version 0.9.5 has introduced ability to add custom engines and fixed a bug that prevented the default engines from being edited correctly.

Requirements:

Firefox 3.0 - 10