Catharsis Definition

Catharsis by Wikipedia

Catharsis is a term in dramatic art that describes the "emotional cleansing" sometimes depicted in a play as occurring for one or more of its characters, as well as the same phenomenon as (an intended) part of the audience’s experience. It describes an extreme change in emotion, occurring as the result of experiencing strong feelings (such as sorrow, fear, pity, or even laughter). It has been described as a "purification" or a "purging" of such emotions.^[1] More recently, such terms as restoration, renewal, and revitalization have been used when referencing the effect on members of the audience

Catharsis by http://psychology.about.com/od/cindex/g/catharsis.htm

A catharsis is an emotional release. According to psychoanalytic theory, this emotional release is linked to a need to release unconscious conflicts. For example, experiencing stress over a work-related situation may cause feelings of frustration and tension. Rather than vent these feelings inappropriately, the individual may instead release these feelings in another way, such as through physical activity or another stress relieving activity.