/ Dictionary / Index B boric acid: Meaning and Definition of Find definitions for: bo'ric ac'id Pronunciation: [key] Also calleda white, crystalline acid, HBO, occurring in nature or prepared from borax: used chiefly in the manufacture of ceramics, cements, glass, and enamels, for fireproofing, and in medicine in aqueous solution as a mild antiseptic. any of a group of acids containing boron. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. boric boric oxide Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language