ALL meanings of placenta
pla·cen·ta
P p - noun plural placenta Anatomy, Zoology. the organ in most mammals, formed in the lining of the uterus by the union of the uterine mucous membrane with the membranes of the fetus, that provides for the nourishment of the fetus and the elimination of its waste products. 1
- noun plural placenta Botany. the part of the ovary of flowering plants that bears the ovules. (in ferns and related plants) the tissue giving rise to sporangia. 1
- noun placenta organ that nourishes unborn baby 1
- countable noun placenta The placenta is the mass of veins and tissue inside the womb of a pregnant woman or animal, which the unborn baby is attached to. 0
- noun placenta the vascular organ formed in the uterus during pregnancy, consisting of both maternal and embryonic tissues and providing oxygen and nutrients for the fetus and transfer of waste products from the fetal to the maternal blood circulation 0
- noun placenta the corresponding organ or part in certain mammals 0
- noun placenta the part of the ovary of flowering plants to which the ovules are attached 0
- noun placenta the mass of tissue in nonflowering plants that bears the sporangia or spores 0
- noun placenta a vascular organ, developed within the uterus of most mammals during gestation from the chorion of the embryo and a part of the maternal uterine wall, that is connected to the embryo by the umbilical cord and that is discharged shortly after birth: it serves as the structure through which nourishment for the fetus is received from, and wastes of the fetus are eliminated into, the circulatory system of the mother 0
- noun placenta any similar structure in other animals 0
- noun placenta that part of the lining of the ovary which bears the ovules 0
- noun placenta any mass of tissue that bears sporangia or spores 0