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ectoderm Definition

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ectoderm
noun(ec-to-derm)
the outermost of the three primary germ layers of an embryo that is the source of various tissues and structures (such as the epidermis, the nervous system, and the eyes and ears)
ectoderm
noun(ec-to-derm)
a tissue (such as neural tissue) derived from this germ layer
ectoderm
noun(ec-to-derm)
the outer layer of cells of a diploblastic animal (such as a jellyfish or sponge)

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