/ti bet"/ , n.
an administrative division of China, N of the Himalayas: prior to 1950 a theocracy under the Dalai Lama; the highest country in the world, average elevation ab. 16,000 ft. (4877 m). 1,250,000; 471,660 sq. mi. (1,221,599 sq. km). Cap.: Lhasa. Also, Thibet . Also called Sitsang, Xizang . Official name, Tibet Autonomous Region .