Titus1 Syllabification: (Ti·tus)Pronunciation: /ˈtītəs/Definition of Titus ( ad 39-81), Roman emperor 79-81; son of Vespasian; full name Titus Vespasianus Augustus; born Titus Flavius Vespasianus. In 70, he ended a revolt in Judaea with the conquest of Jerusalem. Titus in other Oxford dictionaries Definition of Titus in the British & World English dictionary