/ Dictionary / Index D dentary: Meaning and Definition of Find definitions for: den•ta•ry Pronunciation: (den'tu-rē), [key] — pl. -ta•ries. one of a pair of membrane bones that in lower vertebrates form the distal part of the lower jaws and in mammals comprise the mandible. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dental technician dentate Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language