/ Dictionary / Index B bismuth oxychloride: Meaning and Definition of Find definitions for: bis'muth oxychlo'ride Pronunciation: [key] — Chem. Chem. a white, crystalline, water-insoluble powder, BiOCl, used chiefly in the manufacture of pigments, face powders, and artificial pearls. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bismuthous bismuthyl Related Content Daily Word Quiz: stellar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language