ectoderm
ec·to·derm
noun \ˈek-tə-ˌdərm\Definition of ECTODERM
1
: the outer cellular membrane of a diploblastic animal (as a jellyfish)
2
a : the outermost of the three primary germ layers of an embryo that is the source of various tissues and structures (as the epidermis, the nervous system, and the eyes and ears) b : a tissue (as neural tissue) derived from this germ layer
— ec·to·der·mal \ˌek-tə-ˈdər-məl\ adjective
See Origin of ECTODERM
International Scientific Vocabulary
First Known Use: 1859
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