Rodentia

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Rodentia \Ro*den"ti*a\, n. pl. [NL. See {Rodent}, a.] (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.
     [1913 Webster]


  
     Note: 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.
           [1913 Webster]

From WordNet (r) 2.0 [wn]:

  Rodentia
       n : small gnawing animals: porcupines; rats; mice; squirrels;
           marmots; beavers; gophers; voles; hamsters; guinea pigs;
           agoutis [syn: {order Rodentia}]