obsessive-compulsive disorder

World English Dictionary
obsessive-compulsive disorder
 
n
psychiatry OCD an anxiety disorder in which patients are driven to repeat the same act, such as washing their hands, over and over again, usually for many hours

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American Heritage
Science Dictionary
obsessive-compulsive disorder   (əb-sěs'ĭv-kəm-pŭl'sĭv)  Pronunciation Key 
A psychiatric disorder characterized by the persistent intrusion of repetitive, unwanted thoughts which may be accompanied by compulsive actions, such as handwashing. The individual cannot voluntarily prevent these thoughts or actions, which interfere with normal functioning.
The American Heritage® Science Dictionary
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