Noun: imperium (imperia) im'peer-ee-um
- Supreme authority; absolute dominion
"The Roman emperor exercised imperium over vast territories"
- The domain ruled by an emperor or empress; the region over which imperial dominion is exercised
"The Roman imperium at its height stretched from Britain to Egypt";
- empire
Derived forms: imperia
Type of: authorisation [Brit], authority, authorization, demesne, domain, dominance, land, potency, say-so
Encyclopedia: Imperium, 3rd Millenium