/ Dictionary / Index D diphyodont: Meaning and Definition of Find definitions for: diph•y•o•dont Pronunciation: (dif'ē-u-dont"), [key] — adj. Zool. having two successive sets of teeth, as most mammals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. diphyllous dipl. 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