inner cell mass

noun

A mass of cells within a primordial embryo that will eventually develop into the distinct form of a fetus in most eutherian mammals.

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Meanings

nouninner cell mass (plural inner cell masses)

plural inner cell masses

  1. embryologyA mass of cells within a primordial embryo that will eventually develop into the distinct form of a fetus in most eutherian mammals.
Cite this entry
APA

inner cell mass. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/inner%20cell%20mass

MLA

“inner cell mass.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/inner%20cell%20mass. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “inner cell mass,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/inner%20cell%20mass.

Source: inner cell mass on Wiktionary, CC BY-SA 4.0.