a colorless or pinkish crystalline alkaloid, CHNO, extracted from the Calabar bean, used in medicine for stimulating intestinal muscles, contracting the pupils of the eyes, etc.
Origin of physostigmine; from Modern Latin Physostigma, name of the genus including the Calabar bean ; from Classical Greek physa, a bellows (; from Indo-European an unverified form phus-, variant, variety of an unverified form pu-, an unverified form phu-, to blow from source Classical Latin pustula) + stigma, a prick (see stick) + -ine
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.
Origin of physostigmineNew Latin Ph&ymacron;sostigma, genus name of the Calabar bean (Greek ph&umacron;sa, bellows + stigma) + –ine2.