plural noun

Definition of Heteromyidae

: a family of New World rodents having fur-lined external cheek pouches, large eyes, well developed ears, elongated hind limbs and tail adapted to leaping and balancing, and the ability to live on dry food and depending on metabolic water to survive under extreme desert conditions — see pocket mouse

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History and Etymology for Heteromyidae

New Latin, from Heteromys, type genus + -idae

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