Main Entry: ¹im·pact

Pronunciation: \im-ˈpakt\

Function: verb

Etymology: Latin impactus, past participle of impingere to push against — more at impinge

Date: 1601

transitive verb 1 a : to fix firmly by or as if by packing or wedging b : to press together
2 a : to have a direct effect or impact on : impinge on b : to strike forcefully; also : to cause to strike forcefullyintransitive verb 1 : to have an impact —often used with on
2 : to impinge or make contact especially forcefully

— im·pact·ful \im-ˈpakt-fəl, ˈim-ˌpakt-fəl\ adjective

— im·pac·tive \im-ˈpak-tiv\ adjective

— im·pac·tor also im·pact·er \-tər\ noun