Uniformitarian definition

Of or holding the doctrine of uniformitarianism.

Of or adhering to uniformity in something.

A person who adheres to some doctrine of uniformity.

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 the same intensity as at the present time, are sufficient to account for all geological changes.