placental
pla-cen-tal
adjective
Relating to or possessing a placenta, especially in mammals.
"The doctor studied placental development."
noun
A mammal characterised by the presence of a placenta.
"Humans are placentals."
Thesaurus
Synonyms: eutherian mammal, placental mammal, eutherian, transplacental
Antonyms: aplacental