uniformitarianism
uni·for·mi·tar·i·an·ism
noun \-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
See First Known Use of UNIFORMITARIANISM
1865
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