A.one's own master: hence,
1. of persons or states, free, independent, Th.4.63, IG12 (9).189.44, etc.: of a youth that has come of age, X.Mem.2.1.21.
2. of ambassadors and commissioners, possessing full powers, plenipotentiary, “αὐτοκράτορά τινα ἑλέσθαι” Ar.Pax 359; “αὐ. ἥκομεν” Id.Av.1595; “πρεσβευτής” Lys.13.9; “ξυγγραφεῖς” Th.8.67; “αὐ. βουλή” And.1.15; ἀποδεῖξαι ἄνδρας ἀρχὴν αὐτοκράτορας, opp. a reference to the assembly, Th.5.27.
3. of rulers, absolute, “στρατηγοί” Id.6.72; “ἄρχων” X. An.6.1.21; “ἀνυπεύθυνος καὶ αὐ. ἄρχειν” Pl.Lg.875b, cf. Plt.299c; τὸ πᾶν αὐ. διαθεῖναι manage all at their pleasure, Th.1.126; ἦρχε τῶν ἀκολουθούντων αὐτὸς αὐτοκράτωρ, of Philip, D.18.235; “μόναρχοι” Arist.Pol. 1295a12; στρατηγία ib.1285a8 (dub.); νοῦς αὐ. (cf. αὐτοκρατής) Anaxag. ap.Pl.Cra.413c: hence, = Lat.Dictator, Plb.3.86.7, etc.; = Imperator, Plu.Pomp.8; of the Emperor, Id.Galb.1, etc.