Tien Shan Syllabification: (Tien Shan)Pronunciation: /ˈtyen ˈSHän/ (also Tian Shan)Definition of Tien Shan a range of mountains that lies north of the Tarim Basin in the Xinjiang autonomous region and eastern Kyrgyzstan. Extending for about 1,500 miles (2,500 km), it rises to 24,406 feet (7,439 m) at Pik Pobedy. Tien Shan in other Oxford dictionaries Definition of Tien Shan in the British & World English dictionary