Толковый словарь английского языка Oxford English Reference - placenta
Placenta
placenta
n. (pl. placentae or placentas) 1 a flattened circular organ in the uterus of pregnant mammals nourishing and maintaining the foetus through the umbilical cord and expelled after birth. 2 (in flowers) part of the ovary wall carrying the ovules. Derivatives placental adj. Etymology: L f. Gk plakous -ountos flat cake f. the root of plax plakos flat plate
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1.
noun (plural -centas or ~e) see: fluke Date: 1691 the vascular organ in mammals except monotremes and marsupials that unites the fetus to the maternal uterus and mediates its metabolic exchanges through a more or less intimate association of uterine mucosal with chorionic and usually allantoic tissues, a sporangium-bearing surface ...Толковый словарь английского языка
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