/ Dictionary / Index D discriminator: Meaning and Definition of Find definitions for: dis•crim•i•na•tor Pronunciation: (di-skrim'u-nā"tur), [key] — n. a person or thing that discriminates. a circuit in which the output is a function of some variation of an input signal from a fixed characteristic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: discriminator (Thesaurus) discriminative discriminatory Related Content Daily Word Quiz: reclusive Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language