Definition of "placental" [pla•cen•tal]

• Of or pertaining to the placenta, or to the Placentalia (adjective)
• Having a placenta (adjective)
• Any animal that is a member of the Placentalia (noun)

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• "We should also remember that the saber-toothed cat phenotype independently appeared in placental and marsupial ancestors, lineages that were long separated not only genetically, but temporally and spatially as well."
• "During the EXIT procedure, the baby is delivered through an abdominal incision, but remains connected to the umbilical cord to allow the baby to maintain placental support."
• "During EXIT, which stands for ex-utero intrapartum therapy, the baby is delivered through an abdominal incision, but remains connected to the umbilical cord to allow the baby to maintain placental support."