noun ce·no·genesis \¦sēnə, ¦senə+\
variants: or


less commonly


\¦sēnə, ¦senə+\

Definition of cenogenesis

  1. :  introduction during development of adaptive characters or structures that are absent from the earlier phylogeny of a strain (as addition of the placenta to the common vertebrate pattern in mammalian evolution) —opposed to palingenesis

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Origin and Etymology of cenogenesis

German zänogenesis, from zän- 2cen- + Latin genesis birth — more at genesis

Seen and Heard

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to cast off or become cast off

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