SINCE 1828
Viperidae
noun plural
Vi·per·i·dae
| \vī-ˈper-ə-ˌdē
\
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Medical Definition of Viperidae
: a widely distributed family comprising heavy-bodied venomous snakes that include Old World snakes (subfamily Viperinae) and the pit vipers (subfamily Crotalinae) and that are characterized by large tubular venom-conducting fangs erected by rotation of the movable premaxillae — compare crotalidae
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