Dictionaries, Thesaurus & Translations

Ethnologue Online
Information about every language in the world - all known languages are documented.
Pasted GraphicLogos Children's Multilingual Dictionary
With translations of common words in over 170 languages. Very useful!
Omniglot
A guide to the languages, alphabets and other writing systems of the world including how to get special characters on your computer.
Free Translation
Will translate a block of text or a website from English into 11 other languages and from 8 other languages into English.
Pasted GraphicBabelfish Translator
Again translates blocks of text and websites but goes to and from more languages than free translation.
Alpha Dictionary Translator
Translate words and phrases to and from English into 24 languages.
Google Language Tools
Set your Google browser to a different language, search for webpages written in a particular language and translate blocks of text of webpages.
Your Dictionaries
Translate to and from English and the following languages: Spanish, French, Italian, German and Polish. Nice design and thorough results eg when searching for 'house' it also pulled up 'getting on like a house on fire'
English to Arabic
Regsiter for free to use this tranlation service. Also can translate from German, Turkish and French.
Translation Booth
While it pushes its paid for services (quite cheap though), this site translates to and from the most languages. There is a link to the left for free website translation. You can pay to have documents translated.
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Dictionaries
Translations
Rhyming dictionary
Useful when stuck on a poetry line!
Dictionary.com
Easy to use interface. Search results are compiled from more than one dictionary source.
Your Dictionary
Your dictionary – links to any kind of dictionary imaginable.
Pasted GraphicWord Central
A kid friendly dictionary with interactives based around words. It has two great games to play.
Online Etymology Dictionary
Find out about how the words we use in English were derived.
iTools
This site is a one-stop shop for dictionary definitions, thesaurus, web searching, translations, solving crosswords etc
Prefixes and Suffixes Dictionary
A free download but not exactly kid friendly. A handy reference tool for teachers though.
Merriam-Webster Online
There is a dictionary option within the search window.
Pasted GraphicMerriam-Webster Visual Dictionary
Explore the dictionary by the themes on the left or type a word into the index box and see what entries there are for that word below. There are clear representations of each word. This is also a good way to find more than one association for the word eg for car there were sport cars, rally cars, freight cars etc. There is also a game of the week where you are asked to drag words into their correct place on a diagram in order to build up your vocabulary.
Thesaurus
Pasted GraphicVisuwords
This free online tool enables you to enter a word and see all a visual map of associated words and concepts. It also shows you parts of speech and the types of lines connecting ideas show you the type of connection.
Pasted GraphicThesaurus.com
Look up synonyms and antonyms for a huge number of words.
Thinkmap Visual Thesaurus
You can subscribe for $20 US a year or download it for $40US. If you put in a word, it shows you synonyms for the word in relationship maps. There are lesson plans as well. This would be a valuable resource.
InfoPlease Thesaurus
Finds synonyms for words.