autocrator ? Obs.|ɔːˈtɒkrətɔː(r)| [a. Gr. αὐτοκράτωρ one's own master, an absolute ruler.] = autocrat (and in earlier use). 1789–96Morse Amer.Geog. II. 88 The emperor, or autocrator of Russia.1832Austin Jurispr. (1879) I. vi. 213 That our own king was monarch and autocrator in Hanover.