ectoderm

ec·to·derm  (kt-dûrm)

n.

1. The outermost of the three primary germ layers of an embryo, from which the epidermis, nervous tissue, and, in vertebrates, sense organs develop.

2. The outer layer of a diploblastic animal, such as a jellyfish.

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ecto·dermal, ecto·dermic adj.

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ectoderm [ˈɛktəʊˌdɜːm], exoderm

n

(Life Sciences & Allied Applications / Biology) the outer germ layer of an animal embryo, which gives rise to epidermis and nervous tissue See also mesoderm, endoderm

ectodermal , ectodermic adj

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ectoderm  (kt-dûrm)

The outermost of the primary germ layers of an animal embryo. In vertebrates, the ectoderm gives rise to the epidermis and associated tissues (such as hair and sweat glands), enamel of the teeth, sense organs, nervous system, and lining of the nose, mouth, and anus. Compare endodermmesoderm

Thesaurus

Noun

1.

ectoderm - the outer germ layer that develops into skin and nervous tissue ectoblast, exoderm germ layer - (embryology) any of the 3 layers of cells differentiated in embryos following gastrulation neural tube - a tube of ectodermal tissue in the embryo from which the brain and spinal cord develop