A poisonous fluid secreted by snakes, spiders, scorpions, etc. [M. Eng. and O. Fr. venim, fr. L. venenum, poison]
kokoi v. a potent neurotoxin found in the frog Phyllobates bicolor; it is a nonprotein compound with a molecular weight of approximately 400, and is lethal in microgram quantities.
Russell's viper v. a v. used as a coagulant in the arrest of hemorrhage from accessible sites in hemophilia.
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