Definitions for gradualismˈgrædʒ u əˌlɪz əm
Random House Webster's College Dictionary
grad•u•al•ismˈgrædʒ u əˌlɪz əm(n.)
the principle or policy of achieving some goal by gradual steps rather than by drastic change.
a tenet of geology or evolutionary theory maintaining that change takes place gradually and continuously over long periods of geological time.
Category: Biology, Evolution
Origin of gradualism:
In evolutionary biology, belief that evolution proceeds at a steady pace, without the sudden development of new species or biological features from one generation to the next.