Kainogenesis

1 definition found

From WordNet (r) 2.0 [wn]:

  kainogenesis
       n : introduction during embryonic development of characters or
           structure not present in the earlier evolutionary history
           of the strain or species (as addition of the placenta in
           mammalian evolution) [syn: {cenogenesis}, {kenogenesis},
           {caenogenesis}, {cainogenesis}] [ant: {palingenesis}]