| apical placentation | (n) where one or few ovules develop at the top of a simple or compound ovary |
| axile placentation | (n) ovules are borne at or around the center of a compound ovary on an axis formed from joined septa |
| basal placentation | (n) where one or few ovules develop at the base of a simple or compound ovary |
| free central placentation | (n) where ovules develop on a central column in a compound ovary lacking septa or with septa at base only |
| lamellate placentation | (n) with ovules on thin extensions of the placentae into a compound ovary |
| marginal placentation | (n) with ovules borne on the wall along the ventral suture of a simple ovary, Syn. ventral placentation |
| parietal placentation | (n) where ovules develop on the wall or slight outgrowths of the wall forming broken partitions within a compound ovary |
| placentation | (n) the formation of the placenta in the uterus |
| placentation | (n) arrangement of the ovules in the placenta and of the placentas in the ovary |