A whole collection of various kind of dictionaries and lexicons. Some of them for instance:
- Webster's Revised Unabridged Dictionary
- WordNet English Lexical Database
- FOLDOC Dictionary of Computing
- VERA Acronym Dictionary
- U.S. Gazetteer Places and Zip codes
and more.
jDictionary's Lexicon Online Plugin offers you a powerful, easy to use interface for these famous dictionaries. Please take a look at the short description for more information and screenshot about Online Lexicon plugin.

This is an English - German, German - English plugin for jDictionary 1.2 or above. This dictionary plugin contains approximate 125.000 words and expressions. You can search the dictionary with wildcards, regexp or with the help of predefined templates, and there are some advanced sorting features too.

This is an English - Spanish, Spanish - English dictionary plugin for jDictionary version 1.2 or above. This plugin contains 24,401 translations. You can search the dictionary with wildcards, regexp or with the help of predefined templates, and there are some advanced sorting features too.

English - Serbian, Serbian - English dictionary plugin for jDictionary 1.2 or higher. This dictionary plugin contains approximate 50.000 words and expressions, and has some advanced searching and sorting features.

Interlingua-English is a dictionary of the international language prepared by the research staff of the International Auxiliary Language Association under the direction of Alexander Gode, Ph.D. The purpose of the Dictionary is to furnish a scientifically sound vocabulary for the auxiliary language which is needed in all fields of international communication. The objective methods used in its compilation should make it a reference work of value in the general field of comparative linguistics. Its primary purpose, however, is to meet the needs of all workers in the special field of interlinguistics.

A well researched Swedish Interlingua dictionary and an outstanding linguistic resource continually updating its entries and definitions. A download which shouldn't be missed by both the novice and the experienced in the linguistic sector.

This is an English - Hungarian, Hungarian - English plugin for jDictionary 1.2 or above. This dictionary plugin contains approximate 130.000 words and expressions. You can search the dictionary with wildcards, regexp or with the help of predefined templates, and there are some advanced sorting features too.

This is an English - Hungarian, Hungarian - English expression dictionary plugin for jDictionary 1.2 or above. This plugin has been formed to help people communicate in English or Hungarian. This dictionary plugin contains approximate 30.000 expressions and some words. You can search the dictionary with wildcards (extended wildcard set), regexp or with the help of predefined templates, and there are some advanced sorting features too.

This is a French - Hungarian, Hungarian - French dictionary plugin for jDictionary version 1.2 or above. The database of this dictionary is growing rapidly. You can search the dictionary with wildcards, regexp or with the help of predefined templates, and there are some advanced sorting features, too. If you search for a word you can be sure that you will get some expressions along with the results. Expressions are very useful for French or Hungarian learners to find out how to use a particular word.

This is a German - Hungarian, Hungarian - German plugin for jDictionary 1.2 or above. This dictionary plugin contains approximate 30.000 words and expressions. You can search the dictionary with wildcards, regexp or with the help of predefined templates, and there are some advanced sorting features too.