Source : Webster's Revised Unabridged Dictionary (1913)

Abreaction \Ab`re*ac"tion\, n. [Pref. ab- + reaction, after G.
   Abreagirung.] (Psychotherapy)
   See {Catharsis}, below.

Source : WordNet®

abreaction
     n : (psychoanalysis) purging of emotional tensions [syn: {catharsis},
          {katharsis}]