/ Dictionary / Index T Tyche: Meaning and Definition of Find definitions for: Ty•che Pronunciation: (tī'kē), [key] — n. the ancient Greek goddess of fortune. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tyche (Thesaurus) Tyburn Tycho Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language