/ Dictionary / Index T 'tis: Meaning and Definition of Find definitions for: 'tis Pronunciation: (tiz), [key] a contraction of it is. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Tiryns tisane Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language