trophoblast

noun
tro·​pho·​blast | \ ˈtrō-fə-ˌblast How to pronounce trophoblast (audio) \

Definition of trophoblast

: the outer layer of the mammalian blastocyst that supplies nutrition to the embryo and facilitates implantation

Other Words from trophoblast

trophoblastic \ ˌtrō-​fə-​ˈbla-​stik How to pronounce trophoblast (audio) \ adjective

First Known Use of trophoblast

1889, in the meaning defined above

History and Etymology for trophoblast

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The first known use of trophoblast was in 1889

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Dictionary Entries Near trophoblast

trophobiotic

trophoblast

trophocyte

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Cite this Entry

“Trophoblast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/trophoblast. Accessed 26 Sep. 2021.

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More Definitions for trophoblast

trophoblast

noun
tro·​pho·​blast | \ ˈtrō-fə-ˌblast How to pronounce trophoblast (audio) \

Medical Definition of trophoblast

: the outer layer of the mammalian blastocyst that supplies nutrition to the embryo, facilitates implantation by eroding away the tissues of the uterus with which it comes in contact allowing the blastocyst to sink into the cavity formed in the uterine wall, and differentiates into the extraembryonic membranes surrounding the embryo

called also trophoderm

Other Words from trophoblast

trophoblastic \ ˌtrō-​fə-​ˈblas-​tik How to pronounce trophoblast (audio) \ adjective

More from Merriam-Webster on trophoblast

Britannica.com: Encyclopedia article about trophoblast

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