Definitions

1. adjective

relating to or derived from the ectoderm, the outermost of the three primary germ layers that form in the early embryo.

“The ectodermic cells in the developing embryo eventually give rise to the nervous system and the skin.”

2. noun

an ectodermic cell or tissue.

“The ectodermic layer of cells in the embryo is crucial for the development of the central nervous system.”