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[en-tuh-durm] /ˈɛn təˌdɜrm/
noun, Embryology
1875-80; ento- + -derm
Related forms
[en-tuh-dur-muh l] /ˌɛn təˈdɜr məl/ (Show IPA),
entodermic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for entoderm
  • Later the mesoderm again penetrates between the entoderm and the ectoderm.
  • The tube is lined by entoderm from which the epithelial lining of the respiratory tract is developed.
British Dictionary definitions for entoderm


the inner germ layer of an animal embryo, which gives rise to the lining of the digestive and respiratory tracts See also ectoderm, mesoderm
Derived Forms
endodermal, endodermic, entodermal, entodermic, adjective


(embryol) another name for endoderm
Derived Forms
entodermal, entodermic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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entoderm in Medicine

entoderm en·to·derm (ěn'tə-dûrm')
Variant of endoderm.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for entoderm


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 eustachian tube, the tonsils, the thyroid gland, parathyroid glands, and thymus gland; the larynx, trachea, and lungs; the gastrointestinal tract (except mouth and anus), the urinary bladder, the vagina (in females), and the urethra. The term endoderm is sometimes used to refer to the gastrodermis, the simple tissue that lines the digestive cavity of cnidarians and ctenophores. Compare ectoderm; mesoderm.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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