/ Dictionary / Index E excitor: Meaning and Definition of Find definitions for: ex•ci•tor Pronunciation: (ik-sī'tur, -tôr), [key] — n. a nerve whose stimulation excites greater action. an exciter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. exciton excl. Related Content Daily Word Quiz: cetacean Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language