Dictionary![]() ![]() bar•itePronunciation: (bâr'īt, bar'-), [key] —n. a common mineral, barium sulfate, BaSO4, occurring in white, yellow, or colorless tabular crystals: the principal ore of barium. Also,barytes.Also called heavy spar. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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