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Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

Medical Dictionary is intended for use by healthcare consumers, students, and professionals as well as anyone who wants to keep up with the burgeoning array of terminology found in today’s medical news. By staying clear of jargon, the dictionary o...

Marvel Comics Database is a wiki anyone can edit, full of characters (like Spider-Man, Wolverine, Iron Man, and the Hulk), comic books, and movies!

Vocabulary.com helps you learn new words, play games that improve your vocabulary, and explore language.

A language arts reference tool and comprehensive search engine for words. Includes the functions of a rhyming dictionary, thesaurus, and spelling checker, as well as an integrated full-text search engine for all of Shakespeare

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

symptom checker allowing research of the causes of one or many symptoms in an extensive knowledge base, including common and rare causes.

Find opposite or similar words at WordHippo.com.

Welcome to AudioEnglish.org: A huge collection of English-learning resources and online English courses with audio: Practical English, Accounting English, Telephone English, Online Dictionary and much more

Search for synonyms and find links to defintions and related content