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Dictionary Switcher Requires Restart

Toggles dictionaries automatically or manually and displays the currently selected one

Rated 4 out of 5 stars (180)
31 users

Babylon Dictionary Word Search Requires Restart

Find the definition for a selected word in a web page or an email.
Right click over the selected word, choose the option "Search in Babylon" and that's it! You will have a new window with the definition of the selected word.

Rated 4 out of 5 stars (44)
6 users

English-Russian dictionary

Spelling of English and Russian words

Rated 4 out of 5 stars (22)
1,814 users

Marathi Dictionary

This dictionary is based on the Marathi word list provided
http://code.google.com/p/hunspell-marathi-dictionary/

Rated 4 out of 5 stars (7)
29 users

Moji Requires Restart

An integrated sidebar-dictionary for Japanese and Chinese including kanji dictionary.

Rated 4 out of 5 stars (9)
2 users

Icelandic Dictionary

Icelandic Dictionary

Rated 4 out of 5 stars (14)
162 users

Greek Spellchecker - Dictionary

Ένα πλήρες συμβατό με τις τελευταίες εκδόσεις, Ελληνικό λεξικό, για όλες τις εφαρμογές της οικογένειας του Mozilla (Firefox - Firefox for Android - Mobile - Thunderbird - Seamonkey).

Rated 5 out of 5 stars (3)
126 users

Markov Dictionary Switcher Requires Restart

Based on Dictionary Switcher but more than a thousand times faster and you can choose dictionaries that you want to use. Detects the language of the message that you are composing and changes the spelling dictionary.

Rated 4 out of 5 stars (7)
0 users

Mukparasi Requires Restart

A Korean popup dictionary based on Rikaichan
Requires the additional dictionary addon.

Rated 1 out of 5 stars (1)
1 user

Zhong Wen Requires Restart

Mouse over a Chinese character to find out it's meaning. A popup will appear showing the 'Pinyin' pronunciation, the simplified character form, and the English translation. You can customize what parts to show on the preferences window.

Rated 4 out of 5 stars (24)
1 user

Perapera Japanese-German Dictionary File Requires Restart

This is additional dictionary file for use with the Perapera Japanese Pop-up Dictionary add-on.

Not yet rated
0 users

Dict

Looks up the definition of words on a Web page.

Rated 5 out of 5 stars (15)
3 users

Frisian Words list

Frisian Words list

Rated 3 out of 5 stars (3)
200 users

Perapera Japanese-Russian Dictionary File Requires Restart

This is additional dictionary file for use with the Perapera Japanese Pop-up Dictionary add-on.

Not yet rated
0 users

Look Up in Dictionary Requires Restart

Looks up a selected word in OS X's Dictionary.app

Rated 5 out of 5 stars (45)
0 users

Perapera Japanese-French Dictionary File Requires Restart

This is additional dictionary file for use with the Perapera Japanese Pop-up Dictionary add-on.

Rated 1 out of 5 stars (1)
0 users

Geiriadur Cymraeg

Welsh MySpell Dictionary - The word-list was created as part of the Cysill software, developed by Canolfan Bedwyr, University of Wales, Bangor.

The Mozilla addon is a separate piece of work simply to connect the dictionary to Mozilla products.

Rated 5 out of 5 stars (7)
129 users

Finnish Spellchecker

Finnish (fi-FI) spellchecker dictionary for Firefox, Thunderbird and SeaMonkey .

Rated 3 out of 5 stars (9)
371 users

Russian spellcheck dictionary (yo). Based on AOT.

Russian spellchecker dictionary. Based on works of AOT.ru group. (only yo)

Rated 5 out of 5 stars (4)
98 users

Albanian Dictionary

Albanian Dictionary for the spellcheck function in Mozilla products.

Rated 5 out of 5 stars (14)
98 users