On-line Dictionaries

 

 

Cambridge Advanced Learner's Dictionary
The best online dictionary available. It provides examples of usage, all words derived from any root words that you enter, idioms, collocations and set phrases, pronunciation, differences between American, British and Australian usage and many other features.

 

Merriam-Webster On-line Dictionary - Click to hear a word (American English pronunciation)

Newbury House/Heinle ESL dictionary - Example sentences for words; IPA transcriptions but no sound
 

BritSpeak  - Differences between British and American English

 

Dictionary.com - Find the meaning of any word using this on-line dictionary.

Online Thesaurus – Find synonyms for any word.