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atropine

[a-truh-peen, -pin] /ˈæ trəˌpin, -pɪn/
noun, Pharmacology
1.
a poisonous crystalline alkaloid, C 17 H 23 NO 3 , obtained from belladonna and other plants of the nightshade family, that prevents the response of various body structures to certain types of nerve stimulation: used chiefly to relieve spasms, to lessen secretions, and, topically, to dilate the pupil of the eye.
Origin
1830-1840
1830-40; < Neo-Latin Atrop(a) belladonna genus (< Greek átropos; see Atropos) + -ine2
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for atropine

atropine

/ˈætrəˌpiːn; -pɪn/
noun
1.
a poisonous alkaloid obtained from deadly nightshade, having an inhibitory action on the autonomic nervous system. It is used medicinally in pre-anaesthetic medication, to speed a slow heart rate, and as an emergency first-aid counter to exposure to chemical warfare nerve agents. Formula: C17H23NO3
Word Origin
C19: from New Latin atropa deadly nightshade, from Greek atropos unchangeable, inflexible; see Atropos
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for atropine
atropine
1836, from L. atropa "deadly nightshade" (from which the alkaloid poison is extracted), from Gk. atropos "inflexible," also the name of one of the Fates (see Atropos).
Online Etymology Dictionary, © 2010 Douglas Harper
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atropine in Medicine

atropine at·ro·pine (āt'rə-pēn', -pĭn) or at·ro·pin (-pĭn)
n.
An alkaloid obtained from belladonna and related plants, used to dilate the pupils of the eyes and as an antispasmodic, antisudorific, and anticholinergic.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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atropine in Science
atropine
  (āt'rə-pēn', -pĭn)   
A poisonous, bitter, crystalline alkaloid derived from deadly nightshade and related plants. It is used as a drug to dilate the pupils of the eye and to inhibit muscle spasms. Chemical formula: C17H23NO3.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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