Definition of Ectodirm
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.
- Webster's Unabridged Dictionary (1913)
- One of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the epidermis (skin) and nervous system of the adult.
- The Nuttall Encyclopedia
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The correct Spelling of this word is: Ectoderm
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