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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...

HowStuffWorks Science has explanations and colorful illustrations related to earth science, life science, and other wonders of the physical world.

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Science comics and articles about living life by the tenets of the scientific method, and the hilarity that ensues.

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 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.

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The leading source for trustworthy and timely health and medical news and information. Providing credible health information, supportive community, and educational services by blending award-winning expertise in content, community services, expert co...