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Meaning of calcium sulfide

cal'cium sul'fide

Pronunciation: [key]
  1. 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.