Word.ws English Dictionary

placental

placental adjective: of or pertaining to the placenta.

Adjective

placental (not comparable)

  1. Of or pertaining to the placenta.
  2. Pertaining to the Placentalia, comprising of mammals that are not marsupials or monotremes.
    • We do not know exactly how many placental lineages survived to leave descendants; most estimates are around ten.2022, Thomas Halliday, Otherlands, Penguin, published 2023, page 103

Noun

placental (plural placentals)

  1. A mammal of the infraclass Placentalia.

Examples of placental in a sentence

  • Should the mother have a placental abruption that puts either the mother or the baby at risk, an emergency C-section is usually performed.
  • The order Insectivora provides such a taxonomic wastebasket in classifications of the placental mammals.
  • Chorionic villus samples typically contain a mixture of placental villi and maternally derived decidua.

All 14 example sentences with placental

Forms of placental

pluralplacentals

Origin of placental

From post-classical Latin placentalis, corresponding to placenta + -al.

Words formed from placental

Phrases with placental

Questions about placental

What does placental mean?
Placental means of or pertaining to the placenta.
What part of speech is placental?
Placental can be an adjective or a noun.

Words near placental in the dictionary

  1. placenta praevia
  2. placenta praevias
  3. placenta previa
  4. placenta previas
  5. placentae
  6. placental
  7. placental abruption
  8. placental abruptions
  9. placentalian
  10. placentally
  11. placentals

Source and license

Adapted from Wiktionary: placental (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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