catastrophism
ca·tas·tro·phism
noun \kə-ˈtas-trə-ˌfi-zəm\Definition of CATASTROPHISM
: a geological doctrine that changes in the earth's crust have in the past been brought about suddenly by physical forces operating in ways that cannot be observed today — compare uniformitarianism
— ca·tas·tro·phist \-fist\ noun
First Known Use of CATASTROPHISM
1869
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