gastraea (plural gastraea)
(biology, obsolete) A hypothetical animal form assumed by Ernst Haeckel as the ancestor of all metazoic animals.
gastraea
plural of gastraeum
• Arteagas
Source: Wiktionary
Gas*træ"a, n. Etym: [NL., from Gr. (Biol.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition
7 November 2024
(verb) remove by or as if by rubbing or erasing; “Please erase the formula on the blackboard--it is wrong!”
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