trophoblast

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UK/ˈtɹɒfə(ʊ)blɑːst/

noun

The membrane of cells that forms the wall of a blastocyst during early pregnancy, providing nutrients to the embryo and later developing into part of the placenta.

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Meanings

nountrophoblast (plural trophoblasts)

plural trophoblasts

  1. biologyThe membrane of cells that forms the wall of a blastocyst during early pregnancy, providing nutrients to the embryo and later developing into part of the placenta.

Origin

From tropho- + -blast.

Full word history & related roots →
Cite this entry
APA

trophoblast. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/trophoblast

MLA

“trophoblast.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/trophoblast. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “trophoblast,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/trophoblast.

Source: trophoblast on Wiktionary, CC BY-SA 4.0.