/ Dictionary / Index A aluminum borohydride: Meaning and Definition of Find definitions for: alu'minum borohy'dride Pronunciation: [key] — Chem. Chem. a volatile liquid, Al(BH), that ignites spontaneously in air and reacts vigorously with water to form hydrogen, used chiefly in organic synthesis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aluminum borate aluminum brass Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language