Definition of mutationism in English:

mutationism

noun

Biology
historical
  • The view that mutation, rather than natural selection, is the main driving force in evolution; especially = mutation theory.

Origin

Early 20th century; earliest use found in Mind. From mutation + -ism, after French mutationnisme.

Pronunciation

mutationism

/mjuːˈteɪʃ(ə)nɪz(ə)m//mjuːˈteɪʃənɪz(ə)m/