Plataea, Battle of Syllabification: (Pla·tae·a, Battle of)Pronunciation: /pləˈtēə/Definition of Plataea, Battle of a battle in 479 bc, during the Persian Wars, in which the Persian forces were defeated by the Greeks near the city of Plataea in Boeotia. Plataea, Battle of in other Oxford dictionaries Definition of Plataea, Battle of in the British & World English dictionary