释义 |
aplacental, a. Zool. rare.|æpləˈsɛntəl| [f. a- prefix 14 + placental.] Having no placenta.
1857Page Advd. Text-Bk. Geol. (1876) 182 Aplacental, bringing forth immature young. 1. Monotremata, Ornithorhyncus, Echidna. 2. Marsupialia, Kangaroos, Opossums. |