/ Dictionary / Index P phenylthiourea: Meaning and Definition of Find definitions for: phen•yl•thi•o•u•re•a Pronunciation: (fen"l-thī"ō-yoo-rē'u, -yoor'ē-u, -fēn"-), [key] — n. Biochem. a crystalline, slightly water-soluble solid, CHNHCSNH, that is either tasteless or bitter, depending upon the heredity of the taster, and is used in medical genetics and as a diagnostic. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phenyl salicylate phenyl valerate Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language