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[fahy-soh-stig-meen, -min] /ˌfaɪ soʊˈstɪg min, -mɪn/
noun, Pharmacology.
an alkaloid, C 1 5 H 2 1 N 3 O 2 , used in the treatment of Alzheimer's disease to raise the level of the neurotransmitter acetylcholine and also as a miotic in glaucoma.
Origin of physostigmine
1860-65; < New Latin Physostigm(a) genus of plants yielding the alkaloid (see physo-, stigma) + -ine2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for physostigmine


an alkaloid found in the Calabar bean used esp in eye drops to reduce pressure inside the eyeball. Formula: C15H21N3O2 Also called eserine
Word Origin
C19: from New Latin Physostigma genus name, from Greek phusa bladder +stigma mark
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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physostigmine in Medicine

physostigmine phy·so·stig·mine (fī'sō-stĭg'mēn') or phy·so·stig·min (-mĭn)
A crystalline alkaloid used in medicine as a miotic and cholinergic agent and to enhance memory in patients with Alzheimer's disease. Also called eserine.

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