[German version]
(Αὔγουστος; Aúgoustos, Σεβαστός; Sebastós). From the time of its first bestowal as a honorific on 16 January AD 27 (Feriale Cumanum, R. Gest. div. Aug. 34) on Octavianus, and its bequeathal by him to Tiberius [1], the title of A. (‘the Sublime’) became an established titular component of the imperial name, but without at the same time bestowing any legal powers. Elevation to A. by the Senate, in the 3rd cent. often by the army ( Soldier emperors), marked the official installation (dies imperii) of the Roman ruler; the praenomen Imperatoris was added to the title as …