- Russell's v. characteristically marked, highly venomous snake (Vipera russellii) of southeastern Asia. The venom is coagulant in action and is used locally in a 1:10,000 solution for the arrest of hemorrhage in hemophilia.
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vi·per 'vī-pər n
1) a common Eurasian venomous snake of the genus Vipera (V. berus) that attains a length of about two feet (0.6 meter), varies in color from red, brown, or gray with dark markings to black, and whose bite is usu. not fatal to humans broadly any snake of an Old World subfamily (Viperinae) of the family Viperidae
2) PIT VIPER
3) a venomous or reputedly venomous snake
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vi·per (viґpər) 1. any member of the families Viperidae and Crotalidae. 2. any venomous snake. See table at snake.Medical dictionary. 2011.