Condominium (international law)

A condominium (plural either condominia, as in Latin, or condominiums) in international law is a territory (such as a border area or a state) in or over which multiple sovereign powers formally agree to share equal dominium (in the sense of sovereignty) and exercise their rights jointly, without dividing it into "national" zones. Although a condominium has always been recognized as a theoretical possibility, condominia have been rare in practice.

Source: Wikipedia — Condominium (international law) (CC BY-SA 4.0)