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Etymology: Gk, kenos, empty, genein, to produce
the development of structural characteristics that are absent in earlier forms of a species, as an adaptive response to environmental conditions. Also spelled caenogenesis, coenogenesis, kenogenesis. Compare palingenesis. caenogenetic, cenogenetic, coenogenetic, adj.
n spontaneously appearing structural developments in a species that occur in response to unique environmental conditions.