Search Result for "aplacental": 
Wordnet 3.0

ADJECTIVE (1)

1. having no placenta;
- Example: "monotremes and marsupials are aplacental mammals"



The 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]


WordNet (r) 3.0 (2006):

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