Dictionary
uniformitarianism
noun uni·for·mi·tar·i·an·ism \-ē-ə-ˌni-zəm\
Definition of UNIFORMITARIANISM
: 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 — compare catastrophism
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First Known Use of UNIFORMITARIANISM
1865
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