catastrophism
Concise Oxford English Dictionary © 2008 Oxford University Press:
catastrophism/kəˈtastrəfɪz(ə)m/
▶noun Geology the theory that changes in the earth's crust during geological history have resulted chiefly from sudden violent and unusual events. Often contrasted with uniformitarianism.
– derivatives
catastrophist noun & adjective.
catastrophist noun & adjective.
'catastrophism' also found in these Oxford entries:

