Ectoblast

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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]



From WordNet (r) 2.0 [wn]:

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