aplacental

2 definitions found

aplacental - Collaborative International Dictionary of English v.0.48 :

  Aplacental \Ap`la*cen"tal\, a. [Pref. a- + placental.]
     Belonging to the Aplacentata; without placenta.
     [1913 Webster]

aplacental - WordNet (r) 2.1 (2005) :

  aplacental
      adj 1: having no placenta; "monotremes and marsupials are
             aplacental mammals" [ant: placental]