The Collaborative International Dictionary of English v.0.48:
katharsis \katharsis\ n. purging of emotional tensions; -- usually spelled catharsis. Syn: catharsis, abreaction. [WordNet 1.5]WordNet (r) 3.0 (2006):
katharsis n 1: purging the body by the use of a cathartic to stimulate evacuation of the bowels [syn: catharsis, katharsis, purgation] 2: (psychoanalysis) purging of emotional tensions [syn: catharsis, katharsis, abreaction]