ex‧or‧cis‧m /ˈeksɔːsɪz
əm $ -ɔːr-/ 
 noun [uncountable and countable]1.  a process during which someone tries to make an evil 
spirit leave a place by saying special words, or a ceremony when this is done
2.   literary the process of making yourself forget a bad memory or experience 
 [TahlilGaran] Dictionary of Contemporary English ▲