Montezuma II Syllabification: (Mon·te·zu·ma II)Pronunciation: /ˌmäntiˈzo͞omə/Definition of Montezuma II (1466–1520), Aztec emperor 1502–20. The last ruler of the Aztec empire in Mexico, he was defeated and imprisoned by the Spanish under Cortés in 1519. Montezuma II in other Oxford dictionaries Definition of Montezuma II in the British & World English dictionary