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Noun: placenta (placentas,placentae)  plu'sen-tu
  1. That part of the ovary of a flowering plant where the ovules form
     
  2. The vascular structure in the uterus of most mammals providing oxygen and nutrients for and transferring wastes from the developing foetus

Derived forms: placentae, placentas

Type of: reproductive structure, vascular structure

Part of: ovary, uterus, womb

Encyclopedia: Placenta