Main Entry: ac·tiv·i·ty

Pronunciation: \ak-ˈtiv-ət-ē\

Function: noun

Inflected Form(s): plural ac·tiv·i·ties

1 : 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
2 : the characteristic of acting chemically or of promoting a chemical reaction <the activity of a catalyst>