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Dictionary

cal'cium sul'fide

a yellow to light-gray, slightly water-soluble powder, CaS, having the odor of rotten eggs when moist: used chiefly in the preparation of luminous paint, hydrogen sulfide, and as a depilatory in cosmetics.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

calcium silicate

calc-sinter

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