/ Dictionary / Index T thioxanthene: Meaning and Definition of Find definitions for: thi•o•xan•thene Pronunciation: (thī"u-zan'thēn), [key] — n. Pharm. any of a class of antipsychotics, as thiothixene, used to relieve symptoms of severe psychiatric disorders. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thiourea thir 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