plural noun Er·e·thi·zon·ti·dae \ˌerəthə̇ˈzäntəˌdē\

Definition of Erethizontidae

  1. :  a family of chiefly arboreal hystricomorph rodents comprising the typical New World porcupines with the tail more or less prehensile and the soles of the feet specialized for climbing

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Origin and Etymology of erethizontidae

New Latin, from Erethizont-, Erethizon, type genus + -idae

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a rounded knoll or a ridge of ice

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