n. Medicine Purgation, especially for the digestive system.n. A purifying or figurative cleansing of the emotions, especially pity and fear, described by Aristotle as an effect of tragic drama on its audience.n. A release of emotional tension, as after an overwhelming experience, that restores or refreshes the spirit.n. Psychology A technique used to relieve tension and anxiety by bringing repressed feelings and fears to consciousness.n. Psychology The therapeutic result of this process; abreaction.