The Collaborative International Dictionary
Neo-Darwinian
Neo-Darwinism \Ne`o-Dar"win*ism\, n. The theory which holds natural selection, as explained by Darwin, to be the chief factor in the evolution of plants and animals, and denies the inheritance of acquired characters; -- esp. opposed to Neo-Lamarckism. Weismannism is an example of extreme Neo-Darwinism. -- Ne`o-Dar*win"i*an, a. & n.
WordNet
neo-Darwinian
adj. of or relating to Darwin's theories as modified by modern genetic findings; "Neo-Darwinian theories"