/ Dictionary / Index R responser: Meaning and Definition of Find definitions for: re•spons•er Pronunciation: (ri-spon'sur), [key] — n. Electronics. responsor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. response generalization response time Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language