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 (fī′sō-stĭg′mēn′) also phy·so·stig·min (-mĭn)
A crystalline alkaloid, C15H21N3O2, extracted from the Calabar bean, used in the form of its sulfate as a miotic and in the form of its salicylate as a cholinergic agent. Also called eserine.

[New Latin Phȳsostigma, genus name of the Calabar bean (Greek phūsa, bladder, from the appendage at the end of the stigma that was formerly thought to be hollow + stigma) + -ine.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌfaɪsəʊˈstɪɡmiːn) or


(Elements & Compounds) an alkaloid found in the Calabar bean used esp in eye drops to reduce pressure inside the eyeball. Formula: C15H21N3O2. Also called: eserine
[C19: from New Latin Physostigma genus name, from Greek phusa bladder +stigma mark]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌfaɪ soʊˈstɪg min, -mɪn)

an alkaloid, C15H21N3O2, used in the treatment of Alzheimer's disease to raise the level of the neurotransmitter acetylcholine.
[1860–65; < New Latin Physostigm(a) genus of plants yielding the alkaloid (< Greek phŷs(a) bladder, bellows + New Latin -o- -o- + stigma stigma) + -ine2]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.physostigmine - used in treatment of Alzheimer's disease and glaucoma
medicament, medication, medicinal drug, medicine - (medicine) something that treats or prevents or alleviates the symptoms of disease
alkaloid - natural bases containing nitrogen found in plants
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n fisostigmina
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.