Found 2 items, similar to aplacental.
English → English (WordNet) Definition: aplacental aplacental adj : having no placenta; “monotremes and marsupials are aplacental mammals” [ant: placental]
English → English (gcide) Definition: Aplacental Aplacental \Ap`la*cen"tal\, a. [Pref. a- + placental.] Belonging to the Aplacentata; without placenta. [1913 Webster] ||