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Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.

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

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

The Free Online English Dictionary from Macmillan Publishers.

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...

Free online English dictionary from Oxford, plus thesaurus, word of the day, resume examples, letter writing, and English grammar

Comprehensive encyclopedia of mathematics with 13,000 detailed entries. Continually updated, extensively illustrated, and with interactive examples.

The goal of this free online learning center is to help high school students prepare for comprehensive exams in English, math, global history, U.S. history, earth science, biology, chemistry, and physics.

YourDictionary is a free online dictionary that offers definition search from Webster's dictionary for word meanings and thesaurus. Use this dictionary search as a crossword or scrabble dictionary. Also find legal dictionary, technical words, glossar...

Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

Investopedia.com - Your Source For Investing Education. Includes the most comprehensive investing dictionary on the web as well as articles and tutorials on nearly any aspect of the market.