ectoblast

2 definitions found

ectoblast - 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]

ectoblast - WordNet (r) 2.1 (2005) :

  ectoblast
      n 1: the outer germ layer that develops into skin and nervous
           tissue [syn: ectoderm, exoderm, ectoblast]