ectoderm Meaning, Definition & Usage

  1. noun the outer germ layer that develops into skin and nervous tissue
    ectoblast; exoderm.

WordNet

Ec"to*derm noun
Etymology
Ecto- + -derm.
Definitions
  1. (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.

Webster 1913