/ Dictionary / Index T tyrannosaur: Meaning and Definition of Find definitions for: ty•ran•no•saur Pronunciation: (ti-ran'u-sôr", tī-), [key] — n. a large, carnivorous dinosaur, Tyrannosaurus rex, from the Late Cretaceous Epoch of North America, that walked erect on its hind feet. See illus. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tyrannosaur (Thesaurus) tyrannize tyrannous Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language