imperium

[im-peer-ee-uh m] /ɪmˈpɪər i əm/
noun, plural imperia
[im-peer-ee-uh] /ɪmˈpɪər i ə/ (Show IPA),
imperiums.
1.
command; supreme power.
2.
area of dominion; sphere of control or monopoly; empire.
3.
a nation having or exerting supreme power; superpower.
4.
Law. the right to command the force of the state in order to enforce the law.
Origin
1645-55; < Latin: supreme administrative power, authority, empire, equivalent to imper(āre) to rule (see imperative) + -ium -ium
Examples from the web for imperium
  • He had space: the great imperium with its eleven time zones, the distances that gave their blessing to exile and isolation.
  • Consuls and praetors held imperium, officially sanctioned absolute power, although they were constrained in three important ways.
British Dictionary definitions for imperium

imperium

/ɪmˈpɪərɪəm/
noun (pl) -ria (-rɪə)
1.
(in ancient Rome) the supreme power, held esp by consuls and emperors, to command and administer in military, judicial, and civil affairs
2.
the right to command; supreme power
3.
a less common word for empire
Word Origin
C17: from Latin: command, empire, from imperāre to command; see emperor
Word Origin and History for imperium
n.

1650s, from Latin imperium "command, supreme authority, power" (see empire).