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

gastraea \gastrae"a\, n. nl., from gr. ?, ?, the stomach.
   biol.
   a primeval larval form; a double-walled sac from which,
   according to the hypothesis of haeckel, man and all other
   animals, that in the first stages of their individual
   evolution pass through a two-layered structural stage, or
   gastrula form, must have descended. this idea constitutes the
   gastraea theory of haeckel. see gastrula.
   1913 webster
see also:
gastrula 

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