/ Dictionary / Index E excitomotor: Meaning and Definition of Find definitions for: ex•ci•to•mo•tor Pronunciation: (ik-sī"tu-mō'tur), [key] — adj. Physiol. causing an increase of motor activity: excitomotor nerves. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. excito- exciton Related Content Daily Word Quiz: crockery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language