Rodentia

noun plural
Ro·den·tia | \rō-ˈden-chə, -ˈdent-ē-ə \

Medical Definition of Rodentia 

: an order of the division Eutheria comprising relatively small gnawing mammals having a single pair of incisors in each jaw that grow from persistent pulps and bear enamel chiefly in front to produce a chisel-shaped edge

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