Blastoderm

2 definitions found

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

  Blastoderm \Blas"to*derm\, n. [Gr. blasto`s sprout + E. derm.]
     (Embryology)
     the early stage of an embryo after the first cleavages of the
     ovum; also, the layer of cells of which the early embryo is
     composed; specifically:
     (a) the early embryo developing from a blastodisc, after the


         blastocoel has formed.
     (b) in an insect embryo, the layer of cells that surrounds
         the internal mass of the yolk.
         [PJC] Blastodermatic

From WordNet (r) 2.0 [wn]:

  blastoderm
       n : a layer of cells on the inside of the blastula [syn: {germinal
           disc}, {blastodisc}, {germinal area}]