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

gastrula \gas"trula\, n.; pl. gastrulaenl., dim. fr. gr. ?
   the stomach. biol.
   an embryonic form having its origin in the invagination or
   pushing in of the wall of the planula or blastula the
   blastosphere on one side, thus giving rise to a
   double-walled sac, with one opening or mouth the blastopore
   which leads into the cavity the archenteron lined by the
   inner wall the hypoblast. see illust. under invagination.
   in a more general sense, an ideal stage in embryonic
   development. see gastraea. -- a. of or pertaining to a
   gastrula.
   1913 webster
see also:
gastrulae invagination gastraea 

[2] : WordNet (r) 2.0

gastrula
     n : double-walled stage of the embryo resulting from
         invagination of the blastula; the outer layer of cells is
         the ectoderm and the inner layer differentiates into the
         mesoderm and endoderm
     also: gastrulae pl
see also:
gastrulae 

[3] : WordNet (r) 2.0

gastrulae
     see gastrula
see also:
gastrula 

Gastrulae >> G Words
Gastrulae, definition of term: Gastrulae
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