To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!Close
Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
Language Help 0.2 Requires Restart
Looks up selected word in the dictionary. English, Chinese and Spanish bilingual dictionaries supported.
This add-on has been marked as experimental by its developers
This add-on is not compatible with your version of Firefox because of the following: