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Definition of Cytisine
1. a type of alkaloid [n -S] - See also: alkaloid
Medical Definition of Cytisine
1. A toxic selective nicotinic cholinergic alkaloid from the seed of Laburnum anagyroides and other Leguminosae. Used in pharmacological studies of nicotinic cholinergic receptors in the brain. Synonym: baptitoxine. (05 Mar 2000)