Meaning of UNITARY in English

UNITARY

u ‧ ni ‧ ta ‧ ry /ˈjuːnət ə ri, ˈjuːnɪt ə ri $ -teri/ BrE AmE adjective formal

relating to or existing as a single unit:

a single unitary authority for the whole region

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.