What is "uniformism"

Uniformism \U"ni*form`ism\, n. [From Uniform.] (Geol.) The doctrine of uniformity in the geological history of the earth; -- in part equivalent to uniformitarianism, but also used, more broadly, as opposed to catastrophism.

n. (context geology English) The doctrine of uniformity in the geological history of the Earth; in part equivalent to uniformitarianism, but also used, more broadly, as opposed to catastrophism.