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==Origins==
PSYCHE n. + -OSIS suffix, in [[sense]] 1 after German Psychose and NEUROSIS n. Compare scientific [[Latin]] psychosis (1846 or earlier in a medical [[context]] in a German source), French psychose (1859). Compare also ancient [[Greek]] [[fact]] or [[action]] of giving [[soul]] or life to, animation, principle of life.
==Definition==
*[[Medicine]]. and [[Psychology]]. [[Original]]ly: any kind of disordered mental [[state]] or mental illness. Later: spec. severe mental illness, characterized by loss of contact with [[reality]] (in the form of delusions and hallucinations) and deterioration of [[intellectual]] and social functioning, occurring as a primary disorder or secondary to other diseases, drug ingestion, etc.; an instance of this.
[[Category: General Reference]]