/ Dictionary / Index M megacephalic: Meaning and Definition of Find definitions for: meg•a•ce•phal•ic Pronunciation: (meg"u-su-fal'ik), [key] — adj. Cephalom. macrocephalic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. megabyte megacity 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