English-Spanish-French-Arabic Dictionaries
Al Misbar English-Arabic Text Translations
Tarjim (Free but requires registration)
Maktoob (Single word)
Dictionary, Thesaurus, Web Search
One of the best collections of links to dictionaries from all over the world.
OneLook Dictionaries
805,535 words indexed from 186 dictionaries.
On-line Dictionaries
A list of more than 400 online dictionaries of 130 languages
Roget's Thesaurus
Online version of this timeless classic.
Webster Dictionary
From Merriam-Webster. Searches include pronunciation, etymology, and a built-in thesaurus. Probably the very best English dictionary on the Web. Highly recommended!
WordNet 1.5 Vocabulary Helper
Fast and easy to use, this online dictionary is on par with Webster.
Acronym and Abbreviation Dictionary
The Alternative English Dictionary
Encyclopedic collection of English slang.
Australiana
An insight into Australian slang, written by Dave Sag.
Biotechnology Dictionary
An illustrated glossary that contains terms associated with genetics and biochemistry, as well as general biology, chemistry, pharmacology, toxicology, and medicine.
BritSpeak
"Bilingual" dictionary for both British --> American or American --> British English.
Dictionary of Mountain Bike Slang
Compiled by Jim Frost.
Dictionary of Occupational Titles
A listing of thousands of job titles.
English-Russian Online Dictionary
Enter the English word and you'll get the Russian translation in seconds. You'll need Russian fonts, however.
Genealogy Dictionary
Compiled by Dorothy E. Stanley.
Hypertext Webster Interface
Look up a word and you'll get the definition in seconds.
Kev's Down-Under Dictionary
Another terrific source for Australian slang.
Life Science Dictionary
Interactive science dictionary from Biotech.
Nathan Bailey's Universal Etymological English Dictionary
From the year 1736, but still useful.
Newlingo Internet Language Dictionary
A comprehensive listing of new vocabulary from the World Wide Web.
New Zealand English to U.S. English Dictionary
A good place to brush up on your Kiwi English.
The Notable Citizens of Planet Earth Biographical Dictionary
Biographical information on over 18,000 people from ancient times to the present day..
Online Music Dictionary
Everything from "A cappella" to "Zwischenspiel."
The Online Slang Dictionary
Walter Rader's growing collection of English slang from various parts of the world.
Singlish Dictionary
The only place to go if you want to learn the way to speak English in Singapore.
Synonym Dictionary
This cool page generates copyright-free lists of English synonyms.
The Totally Unofficial Rap Dictionary
For students who like rap music.
The Unofficial Smiley Dictionary
Add some emotion to your e-mail!