placentation
English Thesaurus
1. arrangement of the ovules in the placenta and of the placentas in the ovary (noun.plant)
hyponym | : | apical placentation, |
definition | : | where one or few ovules develop at the top of a simple or compound ovary (noun.plant) |
hyponym | : | axile placentation, |
definition | : | ovules are borne at or around the center of a compound ovary on an axis formed from joined septa (noun.plant) |
hyponym | : | basal placentation, |
definition | : | where one or few ovules develop at the base of a simple or compound ovary (noun.plant) |
hyponym | : | free central placentation, |
definition | : | where ovules develop on a central column in a compound ovary lacking septa or with septa at base only (noun.plant) |
hyponym | : | lamellate placentation, |
definition | : | with ovules on thin extensions of the placentae into a compound ovary (noun.plant) |
hyponym | : | parietal placentation, |
definition | : | where ovules develop on the wall or slight outgrowths of the wall forming broken partitions within a compound ovary (noun.plant) |
2. the formation of the placenta in the uterus (noun.process)
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