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

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...

The largest and most trusted free online thesaurus. Quickly find accurate and up-to-date synonyms, antonyms, and related words at Thesaurus.com. Synonym dictionary, antonym dictionary, words synonyms.

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 World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web standards.

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

Exploration of the Planet Mars - missions, videos, images and information

Longman English Dictionary is the leading dictionary for learners of English of all ages and levels who want to learn more about English: definition, idioms, examples and more.

BirdSource, a partnership of The Cornell Lab of Ornithology and the National Audubon Society offers insight into the dynamics of North American Bird populations with projects that track migration, irruption, and foraging behavior.

Burning Man is an annual art event and temporary community based on radical self expression and self-reliance in the Black Rock Desert of Nevada.