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1. WordNet® 3.0 (2006)
ectoblast
    n 1: the outer germ layer that develops into skin and nervous
         tissue [syn: ectoderm, exoderm, ectoblast]

2. The Collaborative International Dictionary of English v.0.48
Ectoblast \Ec"to*blast\, n. [Ecto- + Gr. ? bud, germ.] (Biol.)
   (a) The outer layer of the blastoderm; the epiblast; the
       ectoderm.
   (b) The outer envelope of a cell; the cell wall. --Agassiz.
       [1913 Webster]

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