'Neo-Darwinism' definitions:

Definition of 'neo-Darwinism'

(from WordNet)
noun
A modern Darwinian theory that explains new species in terms of genetic mutations

Definition of 'Neo-Darwinism'

From: GCIDE
  • 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. [Webster 1913 Suppl.]

Definition of 'neo-Darwinism'

From: GCIDE
  • Weismannism \Weis"mann*ism\, n. (Biol.) The theories and teachings in regard to heredity propounded by the German biologist August Weismann, esp. in regard to germ plasm as the basis of heredity and the impossibility of transmitting acquired characteristics; -- often called neo-Darwinism. [Webster 1913 Suppl.]