/ Dictionary / Index M megadont: Meaning and Definition of Find definitions for: meg•a•dont Pronunciation: (meg'u-dont"), [key] — adj. macrodont. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. megadeath megadontia Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language