noun Date: 1865 a geological doctrine that processes acting in the same manner as at present and over long spans of time are sufficient to account for all current geological features and all past geological changes
UNIFORMITARIANISM
Meaning of UNIFORMITARIANISM in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012