Medical Dictionary


noun ac·tiv·i·ty \ak-ˈtiv-ət-ē\
plural ac·tiv·i·ties

Medical Definition of ACTIVITY

:  natural or normal function: as a :  a process (as digestion) that an organism carries on or participates in by virtue of being alive b :  a similar process actually or potentially involving mental function; specifically :  an educational procedure designed to stimulate learning by firsthand experience
:  the characteristic of acting chemically or of promoting a chemical reaction <the activity of a catalyst>


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