trophectoderm

noun

troph·​ec·​to·​derm ˌtrōf-ˈek-tə-ˌdərm How to pronounce trophectoderm (audio)
: 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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Cite this Entry

“Trophectoderm.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/trophectoderm. Accessed 29 Mar. 2023.

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