'Darwinism' definitions:

Definition of 'Darwinism'

From: WordNet
noun
A theory of organic evolution claiming that new species arise and are perpetuated by natural selection

Definition of 'Darwinism'

From: GCIDE
  • Darwinism \Dar"win*ism\, n. (Biol.) The theory or doctrines put forth by Darwin. See above. --Huxley. [1913 Webster]