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Sizes of shoes, sheets, mattresses, baseball fields and other objects; grades; indexes (such as body mass index); the metric system and other systems and units of weight, measure and other properties, foreign and domestic, old and new.

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

Chemistry is the study of matter and energy and the interactions between them. Get facts for the elements in the periodic table. Find chemistry demonstrations and experiments and science fair projects. Get chemistry homework help with worked example ...

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...

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