Hypertext Webster Gateway: "ectoderm"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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}.
From WordNet (r) 1.7 (wn)
ectoderm
n : the outer germ layer that develops into skin and nervous
tissue [syn: {exoderm}, {ectoblast}]
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