/ Dictionary / Index B boric oxide: Meaning and Definition of Find definitions for: bo'ric ox'ide Pronunciation: [key] — Chem. Chem. a colorless crystalline compound, BO, used in metallurgy and chemical analysis. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. boric acid boride Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language