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Calabar bean
Cal·a·bar bean C0022700 (kăl′ə-bär)n. The poisonous seed of a tropical western African woody vine (Physostigma venenosum) in the pea family, the source of physostigmine.
[After Calabar, a town of southeast Nigeria.]Calabar bean (ˌkæləˈbɑː; ˈkæləˌbɑː) n1. (Plants) the dark brown very poisonous seed of a leguminous woody climbing plant, Physostigma venenosum, of tropical Africa, used as a source of the drug physostigmine2. (Pharmacology) the dark brown very poisonous seed of a leguminous woody climbing plant, Physostigma venenosum, of tropical Africa, used as a source of the drug physostigmineCal′abar bean`
n. the poisonous seed of an African climbing plant, Physostigma venenosum, of the legume family, the active principle of which is physostigmine. [1875–80; after Calabar] Thesaurus| Noun | 1. | calabar bean - dark brown highly poisonous seed of the calabar-bean vine; source of physostigmine and used in native witchcraftordeal beancalabar-bean vine, Physostigma venenosum - tropical African woody vine yielding calabar beansbean - any of various seeds or fruits that are beans or resemble beans |
EncyclopediaSeePhysostigmaCalabar bean
phy·so·stig·ma (fī'sō-stig'mă), The dried seed of Physostigma venenosum (family Leguminosae), a vine of western Africa; it contains the alkaloids physostigmine (eserine), eseramine, eseridine (geneserine) and physovenine; at toxic doses, it causes vomiting, colic, salivation, diarrhea, convulsions, sweating, dyspnea, vertigo, slow pulse, and extreme prostration. Synonym(s): Calabar bean, ordeal bean [G. physa, bellows, + stigma, a mark, spot; so called because of the shape of the stigma] Calabar bean (kăl′ə-bär)n. The poisonous seed of a tropical western African woody vine (Physostigma venenosum) in the pea family, the source of physostigmine.Calabar bean Herbal medicine
A climbing vine native to Africa that contains physostimine, which causes death by inducing muscle contractions to the point of rigidity.
Effects
Pupillary constriction, stimulates smooth muscle of the gastrointestinal tract, causing brachycardia and hypertension; synthetic derivatives (e.g., neostigmine) are used for myasthenia gravis, and in ophthalmology to prevent glaucoma.Calabar bean The poisonous seed of the African plant Physostigma venenosum , the source of the drug PHYSOSTIGMINE.calabar bean
Synonyms for calabar beannoun dark brown highly poisonous seed of the calabar-bean vineSynonymsRelated Words- calabar-bean vine
- Physostigma venenosum
- bean
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