/ Dictionary / Index T Theophrastus: Meaning and Definition of Find definitions for: The•o•phras•tus Pronunciation: (thē"u-fras'tus), [key] — n. 372?–287b.c.,Greek philosopher. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: theophrastus (Thesaurus) Theophilus theophylline Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language