/ Dictionary / Index E electron-volt: Meaning and Definition of Find definitions for: e•lec•tron-volt Pronunciation: (i-lek'tron vōlt"), [key] — n. Physics. a unit of energy, equal to the energy acquired by an electron accelerating through a potential difference of one volt and equivalent to 1.602 × 10 joules. Abbr.: eV, ev Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: electron-volt (Thesaurus) electron tube electrooculogram Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language