English Language Learning: Dictionaries and Vocabulary

A different English word every day.  Click on the word for detailed explanations and audio pronunciations.

Merriam-Webster Online Comprehensive online dictionary and thesaurus, with audio pronunciations.

Oxford Concise English Dictionary Online dictionary with over 240,000 words and phrases, along with tips on usage. 

Merriam-Webster Learner's Dictionary Online dictionary aimed at English language learners.  Includes pronunciation exercises and a list of "3000 words you need to know." 

Oxford Student's Dictionary: for learners using English to study other subjects

Oxford American Dictionary: for learners of English

Cambridge Learner's Dictionary

Merriam-Webster's Advanced English Learner's Dictionary

LanguageGuide.org English Vocabulary Visual vocabulary lessons with audio pronunciations.

Vocabulary lists and resources from EnglishClub.com.

Vocabulary lists and exercises from Randall's ESL Cyber Listening Lab.