Standard Lemma guide

placental

adj · noun · 5 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

adj

Meaning 1

Of or pertaining to the placenta.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Pertaining to the Placentalia, comprising of mammals that are not marsupials or monotremes.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: biology, natural-sciences, zoology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A mammal of the infraclass Placentalia.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

adjective

Meaning 4

pertaining to or having or occurring by means of a placenta

Definition source: Princeton WordNet 3.0

Examples

  • all mammals except monotremes and marsupials are placental mammals

Meaning relationships

Synonyms: none provided

Antonyms: aplacental

5

noun

Meaning 5

mammals having a placenta; all mammals except monotremes and marsupials

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: placental mammal, eutherian, eutherian mammal

Antonyms: none provided

Broader terms: mammal, mammalian

Narrower terms: livestock, stock, farm animal, bull, cow, yearling, buck, doe, insectivore, aquatic mammal, carnivore, Fissipedia, aardvark, ant bear, anteater, Orycteropus afer, bat, chiropteran, lagomorph, gnawing mammal, rodent, gnawer, Ungulata, ungulate, hoofed mammal, Unguiculata, unguiculate, unguiculate mammal, hyrax, coney, cony, dassie, das, pachyderm, edentate, pangolin, scaly anteater, primate, tree shrew, flying lemur, flying cat, colugo, proboscidean, proboscidian, plantigrade mammal, plantigrade, digitigrade mammal, digitigrade

History

Etymology

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

Across languages

Translations

17 source translations are retained for this English entry.

  • Catalan: placentari — pertaining to placenta
  • Czech: placentární — pertaining to placenta
  • Czech: placentální — pertaining to placenta
  • French: placentaire — pertaining to placenta
  • Galician: placentario — pertaining to placenta
  • Italian: placentare — pertaining to placenta
  • Italian: placentario — pertaining to placenta
  • Polish: łożyskowy — pertaining to placenta
  • Portuguese: placentário — pertaining to placenta
  • Romanian: placentar — pertaining to placenta
  • Spanish: placentario — pertaining to placenta
  • French: placentaire — member of Placentalia
  • Japanese: 有胎盤類 (yūtaibanrui) — member of Placentalia
  • Polish: łożyskowiec — member of Placentalia
  • Romanian: placentar — member of Placentalia
  • Swedish: moderkaksdjur — member of Placentalia
  • Swedish: placentadäggdjur — member of Placentalia