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Meaning of trophoblast

troph•o•blast

Pronunciation: (trof'u-blast", trō'fu-), [key]
— n. Embryol.
  1. the layer of extraembryonic ectoderm that chiefly nourishes the embryo or develops into fetal membranes with nutritive functions.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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