/ Dictionary / Index M megalocephalic: Meaning and Definition of Find definitions for: meg•a•lo•ce•phal•ic Pronunciation: (meg"u-lō-su-fal'ik), [key] — adj. macrocephalic. afflicted with leontiasis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. megalocardia megalomania Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language