Definify.com
Webster 1913 Edition
Rodentia
‖
Ro-den′ti-a
,Noun.
pl.
[NL. See ]
Rodent
, Adj.
(Zool.)
An order of mammals having two (rarely four) large incisor teeth in each jaw, distant from the molar teeth. The rats, squirrels, rabbits, marmots, and beavers belong to this order.
☞ The incisor teeth are long, curved, and strongly enameled on the outside, so as to keep a cutting edge. They have a persistent pulp and grow continuously.