[fahy-soh-stig-meen, -min]
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.

1860–65; < Neo-Latin Physostigm(a) genus of plants yielding the alkaloid (see physo-, stigma) + -ine2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
physostigmine or physostigmin (ˌfaɪsəʊˈstɪɡmiːn, ˌfaɪsəʊˈstɪɡmɪn)
Also called: eserine an alkaloid found in the Calabar bean used esp in eye drops to reduce pressure inside the eyeball. Formula: C15H21N3O2
[C19: from New Latin Physostigma genus name, from Greek phusa bladder +stigma mark]
physostigmin or physostigmin
[C19: from New Latin Physostigma genus name, from Greek phusa bladder +stigma mark]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

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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