/ Dictionary / Index T turnon: Meaning and Definition of Find definitions for: turn•on Pronunciation: (tûrn'on", -ôn"), [key] — n. Slang. something that arouses one's interest or excitement. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Turn of the Screw, The* turnout Related Content Daily Word Quiz: reticent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language