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placenta

[pluh-sen-tuh] / pləˈsɛn tə /


NOUN
membrane
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

All newborns lack vitamin K. No matter how much vitamin K a mother consumes, it doesn’t sufficiently pass through the placenta, and breast milk contains only small amounts.

From Salon • May 7, 2026

"They've given me the medicines and insulin I need for the health of baby and the placenta."

From BBC • Mar. 24, 2026

Previous research has detected microplastics in nearly every organ, as well as in bodily fluids and even the placenta.

From Science Daily • Feb. 25, 2026

Although scientists once believed that the placenta was a tight, impermeable barrier separating mother and child, that’s not true.

From The Wall Street Journal • Nov. 4, 2025

In experimental animals the chlorinated hydrocarbon insecticides freely cross the barrier of the placenta, the traditional protective shield between the embryo and harmful substances in the mother’s body.

From "Silent Spring" by Rachel Carson




Vocabulary lists containing placenta


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