plural noun Cas·tor·i·dae \kaˈstȯrəˌdē\

Definition of Castoridae

  1. :  a family of rather large heavy-skulled sciuromorph rodents comprising the beavers and extinct related forms

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Origin and Etymology of castoridae

New Latin, from Castor, type genus + -idae

Seen and Heard

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feeling or affected by lethargy

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