- placentation - the formation of the placenta in the uterus
--1 is a kind of bodily process, body process, bodily function, activity
- placentation - arrangement of the ovules in the placenta and of the placentas in the ovary
--2 is a kind of reproductive structure
--2 has particulars:apical placentation; axile placentation; basal placentation; free central placentation; lamellate placentation; marginal placentation, ventral placentation; parietal placentation - placentation - arrangement of the ovules in the placenta and of the placentas in the ovary