Definition from Wiktionary, the free dictionary
psychosis (plural psychoses)
- (psychology) A severe mental disorder, sometimes with physical damage to the brain, marked by a deranged personality and a distorted view of reality.
2014 April 21, “Subtle effects”, The Economist, volume 411, number 8884:
- Manganism has been known about since the 19th century, when miners exposed to ores containing manganese […] began to totter, slur their speech and behave like someone inebriated. The poisoning was irreversible, and soon ended in psychosis and death.