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n. pl. im·pe·ri·a (-pîr′ē-ə)
1. Absolute rule; supreme power.
2. A sphere of power or dominion; an empire.

[Latin; see empire.]


n, pl -ria (-rɪə)
1. (Historical Terms) (in ancient Rome) the supreme power, held esp by consuls and emperors, to command and administer in military, judicial, and civil affairs
2. (Government, Politics & Diplomacy) the right to command; supreme power
3. (Government, Politics & Diplomacy) a less common word for empire
[C17: from Latin: command, empire, from imperāre to command; see emperor]


(ɪmˈpɪər i əm)

n., pl. -pe•ri•a (-ˈpɪər i ə)
1. command; supreme power.
2. area of dominion; sphere of control or monopoly; empire.
3. the right to command the force of the state in order to enforce the law.
[1645–55; < Latin: authority, empire =imper(āre) to rule (see emperor) + -ium -ium1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.imperium - the domain ruled by an emperor or empressimperium - the domain ruled by an emperor or empress; the region over which imperial dominion is exercised
demesne, domain, land - territory over which rule or control is exercised; "his domain extended into Europe"; "he made it the law of the land"
2.imperium - supreme authority; absolute dominion
authority, potency, authorization, authorisation, say-so, dominance - the power or right to give orders or make decisions; "he has the authority to issue warrants"; "deputies are given authorization to make arrests"; "a place of potency in the state"
References in classic literature ?
They still, in fine, seem to cherish with blind devotion the political monster of an imperium in imperio.
Tiberius said to Galba, Tu quoque, Galba, degustabis imperium.
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The far reaching presence and significant engineering capabilities of Subsea 7 will allow us to grow our application set to completely new areas," said Bob Lasser, Chief Executive Officer of Imperium, Inc.