Definitions for darwinismˈdɑr wəˌnɪz əm
Random House Webster's College Dictionary
Dar•win•ismˈdɑr wəˌnɪz əm(n.)
the Darwinian theory that species originate by descent with slight variation from parent forms through the natural selection of individuals best adapted for survival and reproduction.
Origin of Darwinism:
a theory of organic evolution claiming that new species arise and are perpetuated by natural selection
The principles of natural selection set out by Charles Darwin in the Origin of Species (1859) and other writings.
the theory or doctrines put forth by Darwin. See above