/ Dictionary / Index M M.E.P.: Meaning and Definition of Find definitions for: M.E.P. Pronunciation: [key] Master of Engineering Physics. m.e.p. Pronunciation: [key] mean effective pressure. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. meow M.E.P.A. Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language