dominion Copy link Outline I. Sovereign powerII. In plur., the regions ruled over1. impĕrium2. regnum3. expr. by verb • dominion: I. Sovereign power: dĭtio, impĕrium, pŏtestas: v. authority, power. II. In plur., the regions ruled over: 1. impĕrium: the extension of the boundaries of the d.s (of Rome), finium imperii propagatio, Cic.: v. empire. 2. regnum: the d.s of Jugurtha and Bocchus, Jugurthae Bocchique r., Sall.: poet. often pl. Hor.: Virg. 3. expr. by verb: the quondam d.s of fierce Lycurgus, (terra) acri quondam regnata Lycurgo, Virg.