n. (Geol.) The doctrine that the geological changes in the earth's crust have been caused by the sudden action of violent physical causes; -- opposed to the doctrine of uniformism. [ 1913 Webster ]
[灾变论 / 災變論, zāi biàn lùnㄗㄞ ㄅㄧㄢˋ ㄌㄨㄣˋ] catastrophism; the theory that geological change is caused by catastrophic events such as the Biblical flood#452859
[灾变说 / 災變說, zāi biàn shuōㄗㄞ ㄅㄧㄢˋ ㄕㄨㄛ] catastrophism (theory that geological changes are brought about by catastrophes such as the biblical flood#855097