/ Dictionary / Index T tautologism: Meaning and Definition of Find definitions for: tau•tol•o•gism Pronunciation: (tô-tol'u-jiz"um), [key] — n. the use of tautology. a tautology. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tautog tautologize Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language