placental
- n mammals having a placenta; all mammals except monotremes and marsupials
- a pertaining to or having or occurring by means of a placenta
all mammals except monotremes and marsupials are placental mammals
- In practically every case the placental form was superior to its marsupial equivalent.
- Perhaps most alarming, repeat C-sections increase a woman's chances of developing life-threatening placental abnormalities that can cause hemorrhaging during childbirth.
- First they proved on guinea pigs, rabbits and themselves that the placental extracts were not poisonous and caused no sex derangements.