/ Dictionary / Index M megahit: Meaning and Definition of Find definitions for: meg•a•hit Pronunciation: (meg'u-hit"), [key] an enterprise, as a movie, that is outstandingly successful. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: megahit (Thesaurus) megahertz megajoule Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language