| 释义 |
plac·en·ta·tion
\ˌplasən.ˈtāshən\ noun
(-s)
Etymology: New Latin placenta + English -ation
1.
a. : the development of the placenta and attachment of the fetus to the uterus during pregnancy
b. : the morphological type of a placenta
< discoidal placentation >
2. : the arrangement or mode of attachment of the placentas and ovules in a plant ovary |