Ectoderm definitions

ĕk'tə-dûrm'
The outermost of the three primary germ layers of an embryo, from which the epidermis, nervous tissue, and, in vertebrates, sense organs develop.
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The outer layer of cells of an animal embryo, from which the nervous system, skin, hair, teeth, etc. are developed.
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The outer layer of a diploblastic animal, such as a jellyfish.
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The layer or layers of cells composing the skin, nervous system, etc. in all animals except protozoans and sponges.
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The outermost of the three primary germ layers of an embryo, from which the epidermis, nervous tissue, and, in vertebrates, sense organs develop.
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The outer layer of a diploblastic animal, such as a jellyfish.
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Outermost of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the epidermis (skin) and nervous system of the adult.
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