placentation

noun

pla·​cen·​ta·​tion ˌpla-sᵊn-ˈtā-shən How to pronounce placentation (audio)
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

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'placentation.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1760, in the meaning defined at sense 1

Time Traveler
The first known use of placentation was in 1760

Dictionary Entries Near placentation

Cite this Entry

“Placentation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/placentation. Accessed 5 Oct. 2024.

Medical Definition

placentation

noun
pla·​cen·​ta·​tion ˌplas-ᵊn-ˈtā-shən, plə-ˌsen- How to pronounce placentation (audio)
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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