/ Dictionary / Index T tuner: Meaning and Definition of Find definitions for: tun•er Pronunciation: (t'nur, ty'-), [key] — n. a person or thing that tunes. the portion of a radio or television receiver that captures the broadcast signal and feeds it to other circuits in the set for further processing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tuner (Thesaurus) tuneless tunesmith Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language