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[hahy-uh-sahy-uh-meen, -min] /ˌhaɪ əˈsaɪ əˌmin, -mɪn/
noun, Pharmacology.
a poisonous alkaloid, C 17 H 23 NO 3 , obtained from henbane and other solanaceous plants, used as a sedative, analgesic, mydriatic, and antispasmodic.
Origin of hyoscyamine
First recorded in 1855-60; hyoscyam(us) + -ine2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for hyoscyamine


/ˌhaɪəˈsaɪəˌmiːn; -mɪn/
a poisonous alkaloid occurring in henbane and related plants: an optically active isomer of atropine, used in medicine in a similar way. Formula: C17H23NO3
Word Origin
C19: from New Latin, from Greek huoskuamos (from hus pig + kuamos bean) + amine
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
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hyoscyamine in Medicine

hyoscyamine hy·o·scy·a·mine (hī'ə-sī'ə-mēn')
A poisonous white crystalline alkaloid isometric with atropine and having similar uses but more potent effects.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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