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placentas

  • plural
    of placenta.
    placenta
    noun
    the organ in most mammals, formed in the lining of the uterus by the union of the uterine mucous membrane with the membranes of the fetus, that provides for the nourishment of the fetus and the elimination of its waste products.

Example Sentences

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They’ve been found in human organs and tissue, such as brains, livers, placentas and testicles.

From Los Angeles Times ● Apr. 2, 2026

Deposits of black carbon from air pollution have been found in the human body including in placentas analysed after birth.

From BBC ● Feb. 6, 2026

Yes, even though your own placenta did not live very long, placentas, as a group, are some of the real stars of life on Earth today.

From Slate ● Sep. 7, 2024

Had someone looked at this patient’s placentas sooner, said Parast, her multiple stillbirths may have been prevented with treatment.

From Salon ● May 29, 2024

In 2006, some seven hundred new mothers found out that doctors had taken their placentas without consent to test for abnormalities that might help the hospital defend itself against future lawsuits over birth defects.

From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot