/ Dictionary / Index M -megaly: Meaning and Definition of Find definitions for: -megaly Pronunciation: [key] a combining form meaning “irregular enlargement” of the organ of the body specified by the initial element: cardiomegaly. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. megalosaur Megan Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language