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  Word: Gastraea

  ID	Word	Wordtype	Definition
  64786	Gastraea	n.	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.

  
  

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  Glance | Plagiarize | Redstart | Span | Level |