/ Dictionary / Index D digestant: Meaning and Definition of Find definitions for: di•gest•ant Pronunciation: (di-jes'tunt, dī-), [key] — n. Pharm. a substance that promotes digestion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. digest digester Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language