Medical Dictionary


noun hy·per·ac·tiv·i·ty \ˌhī-pə-ˌrak-ˈtiv-ət-ē\
plural hy·per·ac·tiv·i·ties

Medical Definition of HYPERACTIVITY

:  a state or condition of being excessively or pathologically active; especially :  attention deficit disorder


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