Thesaurus: gastraea

Related headwords

Definitions

1. 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.
2. 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.
3. 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 atwo-layered structural stage, or gastrula form, must have descended.This idea constitutes the Gastræa theory of Haeckel. See Gastrula.
4. 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.