/ Dictionary / Index B barbituric: Meaning and Definition of Find definitions for: bar•bi•tu•ric Pronunciation: (bär"bi-toor'ik, -tyoor'-), [key] — adj. Chem. of or derived from barbituric acid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. barbiturate barbituric acid Related Content Daily Word Quiz: dentifrice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language