[ im-peer-ee-uh m ]
/ ɪmˈpɪər i əm /

noun, plural im·pe·ri·a [im-peer-ee-uh] /ɪmˈpɪər i ə/, im·pe·ri·ums.

command; supreme power.
area of dominion; sphere of control or monopoly; empire.
a nation having or exerting supreme power; superpower.
Law. the right to command the force of the state in order to enforce the law.

Origin of imperium

1645–55; < Latin: supreme administrative power, authority, empire, equivalent to imper(āre) to rule (see imperative) + -ium -ium Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for imperium

British Dictionary definitions for imperium

/ (ɪmˈpɪərɪəm) /

noun plural -ria (-rɪə)

(in ancient Rome) the supreme power, held esp by consuls and emperors, to command and administer in military, judicial, and civil affairs
the right to command; supreme power
a less common word for empire

Word Origin for imperium

C17: from Latin: command, empire, from imperāre to command; see emperor
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012