Definitions
from The Century Dictionary.
- noun A secondary modified gastrula, of variable form, resulting from any kenogenetic mode of egg-cleavage in which a primitive or palingenetic process is vitiated. See cuts under
gastrulation .
Etymologies
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Examples
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In all other extent Vertebrates these fundamental processes have been more or less modified by adaptation to the conditions of embryonic development especially by changes in the food yolk; they exhibit various cenogenetic forms of the formations of the germlayers, and thus develop by means of a metagastrula.
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The more or less divergent form of gastrula that is produced may be called a secondary, modified gastrula, or a metagastrula.
The Evolution of Man — Volume 1 Ernst Heinrich Philipp August Haeckel 1876
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