placentation

noun

pla·​cen·​ta·​tion ˌpla-sᵊn-ˈtā-shən 

plə-ˌsen-

1

: the arrangement of placentas and ovules in a plant ovary

2

a

: the development of the placenta and attachment of the fetus to the uterus during pregnancy

b

: the morphological type of a placenta

Examples of placentation in a Sentence

Recent Examples on the Web

Another possible cause for higher hormone levels leading to excessive nausea is something called abnormal placentation, where the placenta overgrows, says Liu, adding that this happens only occasionally. —Miriam Falco and Alanne Orjoux, CNN, 4 Sep. 2017

Word History

First Known Use

1760, in the meaning defined at sense 1

Medical Definition

placentation

noun

pla·​cen·​ta·​tion ˌplas-ᵊn-ˈtā-shən, plə-ˌsen- 

1

: the development of the placenta and attachment of the fetus to the uterus during pregnancy

2

: the morphological type of a placenta