/ Dictionary / Index C cyanogen bromide: Meaning and Definition of Find definitions for: cyan'ogen bro'mide Pronunciation: [key] a colorless, slightly water-soluble, poisonous, volatile, crystalline solid, BrCN, used chiefly as a fumigant and a pesticide. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cyanogen cyanogen chloride Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language