plural noun Hys·tric·i·dae \hə̇ˈstrisəˌdē\

Definition of Hystricidae

  1. :  a family of Old World hystricomorph rodents comprising the terrestrial porcupines that was formerly extended to include the New World arboreal porcupines — compare erethizontidae

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Origin and Etymology of hystricidae

New Latin, from Hystric-, Hystrix, type genus + -idae

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