3 definitions found From The Collaborative International Dictionary of English v.0.48 [gcide]: Kenogenesis \Ken`o*gen"e*sis\, n. [Gr. ? new + E. genesis.] (Biol.) 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 {cenogenesis} and {c[ae]nogenesis}.] [1913 Webster] From The Collaborative International Dictionary of English v.0.48 [gcide]: cenogenesis \cen`o*gen"e*sis\ n. [Gr. ? new + E. genesis.] (Biol.) The 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); a 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}. [Also spelled {caenogenesis} and formerly {kenogenesis}.] [WordNet 1.5 + 1913 Webster] From WordNet (r) 2.0 [wn]: caenogenesis 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}, {cainogenesis}, {kainogenesis}] [ant: {palingenesis}]
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