neo-darwinism
Ne`o-Dar"win*ism, n. Defn: 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.