'Ectoderm' definitions:
Definition of 'ectoderm'
From: WordNet
Definition of 'Ectoderm'
From: GCIDE
- Ectoderm \Ec"to*derm\, n. [Ecto- + -derm.] (Biol.) (a) The outer layer of the blastoderm; epiblast. (b) The external skin or outer layer of an animal or plant, this being formed in an animal from the epiblast. See Illust. of Blastoderm. Ectodermal