Medical Dictionary
trophectoderm
noun troph·ec·to·derm \ˌtrōf-ˈek-tə-ˌdərm\
Medical Definition of TROPHECTODERM
: trophoblast; especially : the outer layer of the mammalian blastocyst after differentiation of the ectoderm, mesoderm, and endoderm when the outer layer is continuous with the ectoderm of the embryo
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