The New Dictionary of Cultural Literacy, Third Edition. 2002.
psychoanalysis
A method of treating mental illness, originating with Sigmund Freud, in which a psychiatrist (analyst) helps a patient discover and confront the causes of the illness. Many psychiatrists believe that these causes are buried deep in the unconscious of the patient and can be brought to the surface through such techniques as hypnosis and the analysis of dreams. Psychoanalysis emphasizes that mental illness usually originates in repressed sexual desires or traumas in childhood.