placenta

noun
pla·​cen·​ta | \ plə-ˈsen-tə How to pronounce placenta (audio) \
plural placentas or placentae\ plə-​ˈsen-​(ˌ)tē How to pronounce placenta (audio) \

Definition of placenta

1 : the vascular organ in mammals except monotremes and marsupials that unites the fetus to the maternal uterus and mediates its metabolic exchanges through a more or less intimate association of uterine mucosal with chorionic and usually allantoic tissues also : an analogous organ in another animal
2 : a sporangium-bearing surface especially : the part of the carpel bearing ovules

Examples of placenta in a Sentence

Recent Examples on the Web Wildlife photographer Kelly Fogel, for example, recently submitted rare footage of an elephant eating her own placenta after giving birth. Rachel Nuwer, Scientific American, 9 June 2021 In people, this can lead to severe complications that include liver damage, kidney failure and detachment of the placenta. Bob Holmes, Smithsonian Magazine, 21 May 2021 The hallucinatory images that introduce the series—a symbolic merging of the birth canal and the Railroad; Cora’s emergence; her mother, Mabel, burying the placenta and at some point fleeing—are followed by matters very real. John Anderson, WSJ, 13 May 2021 Bamfield and Ho focused on the baby, while Beeding helped Mounga deliver the placenta in the bathroom. Washington Post, 7 May 2021 There are no embryonic materials or placenta in the vaccines. Washington Post, 28 May 2021 Oh baby, baby, how are you supposed to know whether Covid-19 vaccines can affect your placenta? Bruce Y. Lee, Forbes, 12 May 2021 She was then taken to a trauma hospital and had emergency surgery for a retained placenta, the probable cause statement said. Audrey Jensen, The Arizona Republic, 24 Apr. 2021 Both twins were in the neonatal intensive care unit at Bath Royal United Hospital, but Rosalie, who had a smaller placenta and didn't grow as much, had to stay in the hospital longer. Caitlin O'kane, CBS News, 2 Apr. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'placenta.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of placenta

1638, in the meaning defined at sense 1

History and Etymology for placenta

New Latin, from Latin, flat cake, from Greek plakoenta, accusative of plakoeis, from plak-, plax flat surface — more at fluke

Keep scrolling for more

Learn More About placenta

Time Traveler for placenta

Time Traveler

The first known use of placenta was in 1638

See more words from the same year

Statistics for placenta

Last Updated

12 Jun 2021

Cite this Entry

“Placenta.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/placenta. Accessed 20 Jun. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for placenta

placenta

noun

English Language Learners Definition of placenta

medical : the organ in mammals that forms inside the mother's uterus, nourishes the unborn baby, and is pushed out of the mother after the birth of the baby

placenta

noun
pla·​cen·​ta | \ plə-ˈsen-tə How to pronounce placenta (audio) \

Kids Definition of placenta

: the organ in most mammals by which the fetus is joined to the uterus of the mother and is nourished

placenta

noun
pla·​cen·​ta | \ plə-ˈsent-ə How to pronounce placenta (audio) \
plural placentas or placentae\ -​ˈsent-​(ˌ)ē How to pronounce placenta (audio) \

Medical Definition of placenta

: the vascular organ in mammals except monotremes and marsupials that unites the fetus to the maternal uterus and mediates its metabolic exchanges through a more or less intimate association of uterine mucosal with chorionic and usually allantoic tissues permitting exchange of material by diffusion between the maternal and fetal vascular systems but without direct contact between maternal and fetal blood and typically involving the interlocking of fingerlike vascular chorionic villi with corresponding modified areas of the uterine mucosa — see abruptio placentae

More from Merriam-Webster on placenta

Nglish: Translation of placenta for Spanish Speakers

Britannica English: Translation of placenta for Arabic Speakers

Britannica.com: Encyclopedia article about placenta

WORD OF THE DAY

Test Your Vocabulary

Return of Name that Color!

  • a light greenish blue color
  • Name that color:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!