Main Entry: de·ac·ti·vate

Pronunciation: \(ˌ)dē-ˈak-tə-ˌvāt\

Function: transitive verb

Date: 1926

: to make inactive or ineffective <deactivate a bomb> <deactivate a chemical compound>

— de·ac·ti·va·tion \(ˌ)dē-ˌak-tə-ˈvā-shən\ noun

— de·ac·ti·va·tor \(ˌ)dē-ˈak-tə-ˌvā-tər\ noun