Endoderm

//ˌen.doʊˈdɝː.m// noun

Definitions

Noun
  1. 1
    One of the three tissue layers in the embryo of a metazoan animal, which will produce through development, the digestive system of the adult.
  2. 2
    the inner germ layer that develops into the lining of the digestive and respiratory systems wordnet

Etymology

From endo- + -derm.

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