Deucalion Syllabification: (Deu·ca·li·on)Pronunciation: /d(y)o͞oˈkālēən/ Greek MythologyDefinition of Deucalion the son of Prometheus. With his wife Pyrrha he survived a flood sent by Zeus to punish human wickedness; they were then instructed to throw stones over their shoulders, and these turned into humans to repopulate the world. Deucalion in other Oxford dictionaries Definition of Deucalion in the British & World English dictionary