Nagorno-Karabakh(redirected from Mountainous Karabakh)
Also found in: Encyclopedia.
A mountainous region of western Azerbaijan. It was ceded to Russia by Persia in the early 1800s and organized as an autonomous region within Azerbaijan by the Soviets (1923). Conflict between Azeris and the majority ethnic-Armenian population in the 1980s resulted in Nagorno-Karabakh's unilateral declaration of independence in 1991. A ceasefire was declared in 1994.