Definition of territorium in US English:

territorium

noun

  • The area of land surrounding and within the boundaries of a Roman city, municipium, etc., and under its jurisdiction. Also more generally: the territory over which a state, church, etc., exercises jurisdiction.

Origin

Early 18th century. From classical Latin territōrium territory.

Pronunciation

territorium

/ˌtɛrɪˈtɔːrɪəm/