placentation

https://doi.org/10.1351/goldbook.15982
  1. Formation of a placenta in the uterus.
  2. Type or structure of a placenta.
  3. In botany, arrangement of placentas within the plant ovary.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1284 [Terms] [Paper]