Main Entry: in·ac·tive

Pronunciation: \(ˈ)in-ˈak-tiv\

Function: adjective

: not active: as a : marked by deliberate or enforced absence of activity or effort <forced by illness to lead an inactive life> b of a disease : not progressing or fulminating : quiescent c (1) : chemically inert <inactive charcoal> (2) : not exhibiting optical activity in polarized light d : biologically inert especially because of the loss of some quality (as infectivity or antigenicity)

—in·ac·tiv·ity \(ˌ)in-ˌak-ˈtiv-ət-ē\ noun, plural in·ac·tiv·ities