gradualism Syllabification: (grad·u·al·ism)Pronunciation: /ˈgrajo͞oəˌlizəm/Definition of gradualism noun a policy of gradual reform rather than sudden change or revolution. Biology the hypothesis that evolution proceeds chiefly by the accumulation of gradual changes (in contrast to the punctuationist model). Derivatives gradualist noun gradualisticPronunciation: /ˌgrajəwəˈlistik/ adjective gradualism in other Oxford dictionaries Definition of gradualism in the British & World English dictionary