Gastraea

Acceptable For Game Play - US & UK word lists

This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

the GNU version of the Collaborative International Dictionary of English
  • 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 Gastræa theory of Haeckel. See gastrula.
    • The Century Dictionary and Cyclopedia
  • n. In biology, a hypothetical animal form assumed by Haeckel as the ancestor of all metazoic animals — that is, of those which pass through or attain to the morphological form of a gastrula. See gastrula.
    • Word Usage
    "We shall make use of it later on for our monophyletic theory of descent -- the hypothesis of a common descent of man and all the metazoa from the gastraea."
    Variant
    gastrula   
    Unknown
    Astraea    gastrula   
     
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