¦bəngərō¦täksə̇n noun
Etymology: bungar- (from New Latin Bungarus , genus name of the krait) + -o- + toxin — more at bungarus
: a potent polypeptide neurotoxin that is obtained from krait venom and yields three electrophoretic fractions of which the one designated α is used especially to label acetylcholine receptors at neuromuscular junctions because it binds irreversibly to them and blocks their activity — often used with one of the Greek prefixes α-, β-, or γ- to indicate the electrophoretic fractions