/ Dictionary / Index T tropine: Meaning and Definition of Find definitions for: tro•pine Pronunciation: (trō'pēn, -pin), [key] — n. Chem. a white, crystalline, hygroscopic, water-soluble, poisonous alkaloid, CHNO, obtained chiefly by the hydrolysis of atropine or hyoscyamine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tropic of Capricorn tropism Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language