exorcism

Etymology

From Old French exorciser, from Late Latin exorcizāre, from Ancient Greek ἐξορκίζειν (exorkízein, “banish an evil spirit; bind by oath”), from ἐξ (ex) + ὅρκος (hórkos).

Noun

exorcism (countable and uncountable, plural exorcisms)

1. The ritual act of driving out evil spirits from persons, places or things who are possessed by them.