• WordNet 3.6
    • n physostigmine used in treatment of Alzheimer's disease and glaucoma
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Webster's Revised Unabridged Dictionary
    • n Physostigmine (Chem) An alkaloid found in the Calabar bean (the seed of Physostigma venenosum), and extracted as a white, tasteless, substance, amorphous or crystalline; -- formerly called eserine, with which it was regarded as identical.
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Century Dictionary and Cyclopedia
    • n physostigmine An alkaloid constituting the active principle of the Calabar bean. It is highly poisonous, and when separated by the usual process presents the appearance of a brownish-yellow amorphous mass. It is tasteless, being only slightly soluble in water.
    • n physostigmine It is a powerful depressant and nerve-poison: used to counteract strychnine and atropin, also to contract the pupil. Its formula is C15H21O2N3. Also called eserine.
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Chambers's Twentieth Century Dictionary
    • n Physostigmine fī-sō-stig′min a poisonous alkaloid, the active principle of the Calabar bean.
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Chambers's Twentieth Century Dictionary
Gr. physa, bellows, stigma, stigma.


In literature:

Physostigmine has no action on the unbroken skin.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4" by Various
E'SERIN, or PHYSOSTIGMIN, a drug obtained from Calabar-bean, the active principle of this plant, used as a remedy in cases of tetanus (lockjaw).
"The New Gresham Encyclopedia" by Various