ter ‧ ri ‧ to ‧ ri ‧ al /ˌterəˈtɔːriəl◂, ˌterɪˈtɔːriəl◂/ BrE AmE adjective
1 . related to land that is owned or controlled by a particular country:
a territorial dispute
territorial claims
2 . animals or people that are territorial are careful to guard the area of land that they consider to be their own, and prevent others from using it