"placentation" | Definition and Related Words

Noun

The formation of the placenta in the uterus (synset 113559283)
is a type of: activity, bodily function, bodily process, body process - an organic process that takes place in the body
Arrangement of the ovules in the placenta and of the placentas in the ovary (synset 111701464)
is a type of: reproductive structure - the parts of a plant involved in its reproduction
subtypes:
- apical placentation - where one or few ovules develop at the top of a simple or compound ovary
- axile placentation - ovules are borne at or around the center of a compound ovary on an axis formed from joined septa
- basal placentation - where one or few ovules develop at the base of a simple or compound ovary
- free central placentation - where ovules develop on a central column in a compound ovary lacking septa or with septa at base only
- lamellate placentation - with ovules on thin extensions of the placentae into a compound ovary
- marginal placentation, ventral placentation - with ovules borne on the wall along the ventral suture of a simple ovary
- parietal placentation - where ovules develop on the wall or slight outgrowths of the wall forming broken partitions within a compound ovary