/ Dictionary / Index M MeV: Meaning and Definition of Find definitions for: MeV Pronunciation: (mev), [key] — Physics. Physics. million electron volts; megaelectron volt. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Meuse mew Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language