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- Dictionarypit viper
noun
- 1. a venomous snake of a group distinguished by visible sensory pits on the head which can detect prey by heat. They are found in both America and Asia.
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The Crotalinae, commonly known as pit vipers, or pit adders, are a subfamily of vipers found in Asia and the Americas. Like all other vipers, they are venomous. They are distinguished by the presence of a heat-sensing pit organ located between the eye and the nostril on both sides of the head. Currently, 23 genera and 155 species are recognized: These are also the only viperids found in the Americ... Wikipedia