Thesaurus: kenogenesis

Related headwords

Definitions

1. n. Modified evolution, in which nonprimitive characters make their appearance in consequence of a secondary adaptation of the embryo to the peculiar conditions of its environment; -- distinguished from palingenesis.
2. n. introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution)
3. Modified evolution, in which nonprimitive characters make their appearance in consequence of a secondary adaptation of the embryo to the peculiar conditions of its environment; -- distinguished from palingenesis. [Written also cænogenesis.]
4. Modified evolution, in which nonprimitive characters make theirappearance in consequence of a secondary adaptation of the embryo tothe peculiar conditions of its environment; -- distinguished frompalingenesis. [Written also cænogenesis.]
5. n introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution)