neo-DarwinianPronunciation: /ˌniːəʊdɑːˈwɪnɪən/Definition of neo-Darwinian adjective relating to the modern version of Darwin’s theory of evolution by natural selection, incorporating the findings of genetics. Derivatives neo-DarwinismPronunciation: /niːəʊˈdɑː-/ noun neo-DarwinistPronunciation: /niːəʊˈdɑː-/ noun & adjective neo-Darwinian in other Oxford dictionaries Definition of neo-Darwinian in the US English dictionary