• synonyms


[troh-peen, -pin]
noun Chemistry.
  1. a white, crystalline, hygroscopic, water-soluble, poisonous alkaloid, C8H15NO, obtained chiefly by the hydrolysis of atropine or hyoscyamine.
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Origin of tropine

First recorded in 1880–85; aphetic variant of atropine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for tropine

Historical Examples

  • On the other hand, by heating tropic acid and tropine together, atropine is regenerated.

    Poisons: Their Effects and Detection

    Alexander Wynter Blyth

  • In addition to the types of compounds enumerated above we may also notice purin, tropine and the terpenes.

  • Before my researches nothing was known of the constitution of tropine.

British Dictionary definitions for tropine


  1. a white crystalline poisonous hygroscopic alkaloid obtained by heating atropine or hyoscyamine with barium hydroxide. Formula: C 8 H 15 NO
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Word Origin

C19: shortened from atropine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

tropine in Medicine


(trōpēn′, -pĭn)
  1. A white, crystalline, poisonous alkaloid obtained chiefly by hydrolysis of atropine.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.