IMPACTED Meaning of IMPACTED in English im ‧ pact ‧ ed /ɪmˈpæktəd, ɪmˈpæktɪd/ BrE AmE adjective a tooth that is impacted is growing under another tooth so that it cannot develop properly Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012