Roman emperor, born at Rome, the son of Vespasian, served in Germany and Britain, and under his father in Judæa; on his father's elevation to the throne persecuted the Jews, laid siege to Jerusalem, and took the city in A.D. 70; on his accession to the throne he addressed himself to works of public beneficence, and became the idol of the citizens; his death was sudden, and his reign lasted only three years; during that short period he won for himself the title of the "Delight of Mankind" (40-81).