Monotreme

2 definitions found

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

  Monotreme \Mon"o*treme\, n. [Cf. F. monotr[`e]me.] (Zool.)
     One of the Monotremata.
     [1913 Webster]

From WordNet (r) 2.0 [wn]:



  monotreme
       n : the most primitive mammals comprising the only extant
           members of the subclass Prototheria [syn: {egg-laying
           mammal}]