I.Trajan, a Roman emperor, who reigned A.D. 98-118, proverbial for his justice and benevolence: “Augustofelicior, Trajanomelior,” Eutr. 8, 5.—Hence, Trājānus , a, um, adj., of or belonging to Trajan: “aqua,” Front. Aquaed. 93: “VIA,” the Appian Way, restored by Trajan, Inscr. Grut. 199, 1.