(biology) The local fusion of the embryonic stage of an animal to its parent for physiological exchange to promote the growth and development of the young; involves a placenta in non-egglaying mammals.

plural of placentation

Of or pertaining to the placenta, or to the Placentalia / Having a placenta.

Any animal that is a member of the Placentalia

plural of placental

Having a placenta.

inflammation of the placenta

In terms of, or by means of, the placenta.

The tearing away of the placenta from uterus or the breaking apart of the placenta.

plural of placental abruption