The definition of a mental disorder is a problem in the mind that affects the personality, emotions and thought process.
An example of a mental disorder is obsessive compulsive disorder.
Any of various disorders, such as schizophrenia, bipolar disorder, or autism spectrum disorder, characterized by a distressing or disabling impairment of an individual's cognitive, emotional, or social functioning.
(plural mental disorders)
- Any of the various diseases affecting the mind onset by brain damage or genetics described in the International Statistical Classification of Diseases and Related Health Problems sections 290 through 319.