Embryonic Structure
endoderm Audio
en·do·derm [ en-duh-durm ]
Subclass of:
Germ Layers
Etymology:
Greek endon = within + derma = the skin
Definitions related to endoderm:
  • Germ layer lying remote from the surface of the embryo that gives rise to internal tissues such as gut.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • The deepest of the three primary germ layers (ectoderm, mesoderm and endoderm) found in the early trilaminar embryo, which forms the epithelial linings of the respiratory and digestive tracts.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • The inner of the three germ layers of an embryo.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • Endoderm, the innermost of the three germ layers, or masses of cells (lying within ectoderm and mesoderm), which appears early in the development of an animal embryo. The endoderm subsequently gives rise to the epithelium (tissue that covers, or lines, a structure) of the pharynx, including the...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2020
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