Noun
a battle between the successors of Alexander the Great (301 BC); Lysimachus and Seleucus defeated Antigonus and Demetrius
Source: WordNetSeleucus defeated Antigonus in the Battle of Ipsus in 301 BCE and Lysimachus (King of Thrace, Macedon and Asia Minor) in the battle of Corupedium (near Sardis ) in 281 BCE. Source: Internet