ectoderm

Definition of Ectoderm in English :

1. ectoblast, ectoderm, exoderm

the outer germ layer that develops into skin and nervous tissue

WordNet Lexical Database for English. Princeton University. 2010.

Ectoderm

noun

the outer germ layer of an animal embryo, which gives rise to epidermis and nervous tissue

noun

1.

the outer layer of cells of an animal embryo, from which the nervous system, skin, hair, teeth, etc. are developed

2.

the layer or layers of cells composing the skin, nervous system, etc. in all animals except protozoans and sponges

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.