placental

1 of 2

adjective

pla·​cen·​tal plə-ˈsen-tᵊl 

1

: of, relating to, having, or occurring by means of a placenta

2

: eutherian

placental

2 of 2

noun

: a placental mammal : eutherian

Examples of placental in a Sentence

Recent Examples on the Web

Adjective

De-extincting a placental mammal like a dire wolf is a comparatively straightforward process. — Jeffrey Kluger, Time, 14 Oct. 2026

The condition increases the risk of serious complications including placental abruption, in which the placenta separates from the uterus before delivery. — Faye Chiu, CNN Money, 21 Aug. 2026

Noun

An abnormal increase in a protein called sFlt-1 (soluble fms-like tyrosine kinase 1), which slows down placental growth, Kilpatrick says. — Megha Satyanarayana, Scientific American, 2 Sep. 2026

Excess maternal sugar could also lead to insulin resistance and placental impairment, which can impact nutrient delivery and influence fetal brain development, says Sullivan. — Emily Kay Votruba, EverydayHealth.com, 29 July 2026

Word History

First Known Use

Adjective

1785, in the meaning defined at sense 1

Noun

1839, in the meaning defined above

Rhymes for placental

• judgmental
• omental
• parental
• segmental
• tegmental
• accidental
• compartmental
• continental
• detrimental
• elemental
• fundamental
• governmental

Medical Definition

placental

1 of 2 adjective

pla·​cen·​tal -əl 

1

: of, relating to, having, involving, or produced by a placenta

placental lactogen

placental defects

2

: of or relating to placental mammals

placental

2 of 2 noun

: placental mammal