| Library / English Dictionary |
PLACENTATION
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Arrangement of the ovules in the placenta and of the placentas in the ovary
Classified under:
Hypernyms ("placentation" is a kind of...):
reproductive structure (the parts of a plant involved in its reproduction)
Hyponyms (each of the following is a kind of "placentation"):
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)
Sense 2
Meaning:
The formation of the placenta in the uterus
Classified under:
Nouns denoting natural processes
Hypernyms ("placentation" is a kind of...):
activity; bodily function; bodily process; body process (an organic process that takes place in the body)
