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

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

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

Time Traveler

The first known use of placentation was in 1760

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Cite this Entry

Style

“Placentation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/placentation. Accessed 28 Nov. 2024.

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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

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