from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Alternative form of caenogenesis.

from the GNU version of the Collaborative International Dictionary of English

  • 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.

from The Century Dictionary and Cyclopedia

  • n. Vitiated evolution, as distinguished from hereditary evolution; ontogenesis modified by adaptation, and therefore not true to its type; that development of an individual germ which does not truly epitomize and repeat the phylogenetic evolution of its race or stock: the opposite of palingenesis. See biogeny. Also kenogeny.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • 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)


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