/ Dictionary / Index M millivolt: Meaning and Definition of Find definitions for: mil•li•volt Pronunciation: (mil'u-vōlt"), [key] — n. Elect. a unit of electromotive force equal to one thousandth of a volt. Abbr.: mV, mv Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: millivolt (Thesaurus) millisecond milliwatt 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