aplacentaladj.

/apləˈsɛntəl/

Etymology: < a- prefix⁶ + placental adj. and n.

Zoology. rare.

Having no placenta.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > membranes, etc., of embryo or fetus > [adjective] > placenta

placentary1734

placental1785

diffuse1856

aplacental1859

zonary1881

1859 D. Page Adv. Text-bk. Geol. (ed. 2) ix. 141 Aplacental, bringing forth immature young. Marsupialia (Pouched)— Kangaroo, Opossum, Pouched Wolf, &c. Monotremata (One-vented)—Ornithorhynchus, Porcupine-ant-eaters.

This entry has not yet been fully updated (first published 1885; most recently modified version published online June 2018).

单词	aplacental
释义	aplacentaladj. /apləˈsɛntəl/ Etymology: < a- prefix⁶ + placental adj. and n. Zoology. rare. Having no placenta. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > membranes, etc., of embryo or fetus > [adjective] > placenta placentary1734 placental1785 diffuse1856 aplacental1859 zonary1881 1859 D. Page Adv. Text-bk. Geol. (ed. 2) ix. 141 Aplacental, bringing forth immature young. Marsupialia (Pouched)— Kangaroo, Opossum, Pouched Wolf, &c. Monotremata (One-vented)—Ornithorhynchus, Porcupine-ant-eaters. This entry has not yet been fully updated (first published 1885; most recently modified version published online June 2018). < adj.1859
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