Bible Dictionaries
Ectoderm
Webster's Dictionary
(1):
(n.) The external skin or outer layer of an animal or plant, this being formed in an animal from the epiblast. See Illust. of Blastoderm.
(2):
(n.) The outer layer of the blastoderm; epiblast.
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Bibliography Information
Webster, Noah. Entry for 'Ectoderm'. Noah Webster's American Dictionary. https://www.studylight.org/dictionaries/eng/web/e/ectoderm.html. 1828.