Psychosis is a serious mental disorder in which a person has impaired views of reality and whose personality is very disorganized.
An example of psychosis is a condition causing a person to hallucinate.
a major mental disorder in which the personality is very seriously disorganized and contact with reality is usually impaired: psychoses are of two sorts, a) functional (characterized by lack of apparent organic cause, and principally of the schizophrenic, paranoid, or bipolar type), and b) organic (characterized by a pathological organic condition such as brain damage or disease, metabolic disorders, etc.)
Origin of psychosisModL: see psycho- and -osis
An acute or chronic mental state marked by loss of contact with reality, disorganized speech and behavior, and often hallucinations or delusions, seen in certain mental illnesses, such as schizophrenia, and other medical disorders.
From psych- +"Ž -osis or from Ancient Greek ÏˆÏÏ‡Ï‰ÏƒÎ¹Ï‚ (psykhosis, “animation, principle of life").