›to destroy something completely so that nothing is left: a city annihilated by an atomic bombDestroying and demolishingDamaging and spoiling›informalto defeat completely: He was annihilated in the finals of the competition.Winning and defeatingScoring, winning and losing in sportannihilation
/əˌnaɪ.əˈleɪ.ʃən/noun[U]›During the Cold War the threat of nuclear annihilation was always on people's minds.informalThe opposition party's candidate suffered annihilation (= complete defeat) at the polls.Destroying and demolishingDamaging and spoiling