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Medical Term:

ectoderm

Pronunciation: ek'to-derm

Definition

The outer layer of cells in the embryo, after establishment of the three primary germ layers (ectoderm, mesoderm, endoderm), the germ layer in contact with the amnionic cavity.

Synonym(s): ectoblast1

[ecto- + G. derma, skin]

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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