"Uniformitarianism" is a word in ENGLISH

One who maintains the doctrine of progression in organic forms; -- opposed to uniformitarian.

The doctrine of uniformity in the geological history of the earth; -- in part equivalent to uniformitarianism, but also used, …

One who accepts uniformitarianism, or the uniformitarian doctrine.

Of, pertaining to, or designating, the view or doctrine that existing causes, acting in the same manner and with essentially …