Definition of "placentation" in Englisch

noun

1. (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.

2. (botany) The manner in which the seeds are attached to the placenta within the ovary locules.

   • Parietal placentation occurs in the Brassicaceae family.