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Definition of placental

placental

/pləˈsɛn.təl/
pla · cen · tal
Plural:placentals
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placental Lexical Profile

placental Game Scores & Validity

• adjective

1

Relating to, having, or occurring by means of the placenta in mammals or the ovule-bearing tissue in seed plants.

Example

"Adequate placental blood flow is essential for delivering oxygen and nutrients to the developing fetus."

Synonyms
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Antonyms
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• noun

1

Any mammal of the infraclass Placentalia (or clade Eutheria), comprising the vast majority of living mammals worldwide, characterized by giving birth to relatively well-developed young that were nourished before birth via a vascular placenta.

Example

"Unlike marsupials and monotremes, placentals nourish their developing offspring through a complex organ in the uterus."

Synonyms
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• Rhymes for placental

• Nearby Words

placemat
placement
placenta
placental
placid
placidity
placidly

Word Origin & Etymology

Formed in the 19th century from 'placenta' (from Latin 'placenta', meaning 'flat cake', referencing the organ's discoid shape) combined with the adjectival suffix '-al'.

Cite this Entry

Wordmom. (2026). Definition of Placental. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/placental
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