noun, plural pla·cen·tas, pla·cen·tae [pluh-sen-tee]. /pləˈsɛn ti/.
- the part of the ovary of flowering plants that bears the ovules.
- (in ferns and related plants) the tissue giving rise to sporangia.
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Origin of placenta
OTHER WORDS FROM placenta
Words nearby placenta
Example sentences from the Web for placenta
Around this time, something “magical” happens within the blastocyst, such that it churns out cells that eventually develop into the placenta, and others that give rise to a fetus.
For example, the artificial embryos generated cells that form the placenta, which is critical for a viable embryo that could, in theory, develop further or even until birth.
Several kinds of artificial models of embryos have been described before, but those described today are among the most complete, because they possess the cells needed to form a placenta.A mouse embryo has been grown in an artificial womb—humans could be next|Antonio Regalado|March 17, 2021|MIT Technology Review
Infants under 6 months are likely to be protected by antibodies transferred through the placenta if the pregnant mother is vaccinated, he added.Fauci: Vaccines for Kids as Young as First Graders Could Be Authorized by September|by Caroline Chen|February 11, 2021|ProPublica
A recent study suggests the placenta contains very low levels of the molecules needed to create the receptor.Pregnancy During A Pandemic: The Stress Of COVID-19 On Pregnant Women And New Mothers Is Showing|LGBTQ-Editor|September 23, 2020|No Straight News
Nothing much to use in cleaning up the baby and his mother after the birth, no place to dispose of the placenta.
Usually, the disease resolves with the birth of the baby and placenta.Beyond ‘Downton Abbey’: Preeclampsia Maternal Deaths Continue Today|Eleni Tsigas, Christine Morton|January 28, 2013|DAILY BEAST
It normally occurs during weeks six and eight of pregnancy, when the placenta takes over production of hormones from the ovaries.What Exactly Is Wrong With Kate (And Is She Vomiting Blood?) Experts Rush To Explain...|Tom Sykes|December 3, 2012|DAILY BEAST
You get the biting of the placenta and you get Renesmee biting her without necessarily seeing it.Bill Condon and Melissa Rosenberg on 'Twilight Saga: Breaking Dawn'|Marlow Stern|November 21, 2011|DAILY BEAST
I had to tell her she had a condition with her placenta that made abortion risky.
Dugung nagpúgul sa inunlan, Placenta filled with a big clot of blood.A Dictionary of Cebuano Visayan|John U. Wolff
Finally, some persons make use of the method of corrosion to prepare and preserve the placenta.History of Embalming|J. N. Gannal
They pass up the sides of the bladder towards the navel, enter the sheath of the cord, and so reach the placenta.
The diameter of the placenta is about six inches, and its thickness about one inch and a half.
Some have even averred that the Placenta is not required at all, to supply nourishment, but is merely a purifying organ.
British Dictionary definitions for placenta
noun plural -tas or -tae (-tiː)
- the part of the ovary of flowering plants to which the ovules are attached
- the mass of tissue in nonflowering plants that bears the sporangia or spores
Word Origin for placenta
Medical definitions for placenta
n. pl. pla•cen•tas
Other words from placentapla•cen′tal adj.
Scientific definitions for placenta
Cultural definitions for placenta
An organ that forms in the uterus after the implantation of a zygote. The placenta moves nourishment from the mother's blood to the embryo or fetus; it also sends the embryo or fetus's waste products into the mother's blood to be disposed of by the mother's excretory system. The embryo or fetus is attached to the placenta by the umbilical cord. After birth, the placenta separates from the uterus and is pushed out of the mother's body.