noun
overseas territory; overseas possession
Refers to a territory under the jurisdiction of a country but located outside its mainland, such as a colony or external dependency.
フランスには今でも海外領土がいくつかある。
France still has several overseas territories.
植民地 specifically means 'colony', often with historical or political connotations, while 海外領土 is a broader, more neutral term for any overseas territory.
Compound of 海外 (overseas) and 領土 (territory).