Longman Dictionary of Contemporary English homepage

psychosis

 noun
     
Related topics: Illness and Disability, Psychology, Psychiatry
psy‧cho‧sis plural psychoses [uncountable and countable]
MP a serious mental illness that can change your character and make you unable to behave in a normal way [↪ psychotic]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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