Psychosis

[saɪ'kəʊsɪs] or [saɪ'kosɪs]

(noun.) any severe mental disorder in which contact with reality is lost or highly distorted.

Typed by Ethan--From WordNet

(n.) Any vital action or activity.

(n.) A disease of the mind; especially, a functional mental disorder, that is, one unattended with evident organic changes.

Checked by Debs