Medical Dictionary

compulsion

noun com·pul·sion \kəm-ˈpəl-shən\

Medical Definition of COMPULSION

:  an irresistible persistent impulse to perform an act (as excessive hand washing); also :  the act itself—compare obsession, phobia
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears