/ Dictionary / Index T thiophene: Meaning and Definition of Find definitions for: thi•o•phene Pronunciation: (thī'u-fēn"), [key] — n. Chem. a water-insoluble, colorless liquid, CHS, resembling benzene, occurring in crude coal-tar benzene: used chiefly as a solvent and in organic synthesis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thiopental sodium thiophenol Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language