/ Dictionary / Index B benzoyl peroxide: Meaning and Definition of Find definitions for: ben'zoyl perox'ide Pronunciation: [key] — Chem. Chem. a white, crystalline, water-insoluble, explosive solid, CHO, used chiefly as a bleaching agent for flour, fats, oils, and waxes, and as a catalyst in polymerization reactions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. benzoyl group benzpyrene Related Content Daily Word Quiz: menagerie Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language