Occurrence and Application in Linguistics the Term Chagatai Language

Chagatai writing made a great contribution to the formation and development of culture in the history of Turkic-speaking peoples. Therefore, this article has studied the origin of the anthroponym Chagatai, used by the Turkic-speaking States during the XV–XIX centuries, and its use as a term in scientific works At the time, these issues generated a great interest of Soviet turkologists, and some domestic and Russian-speaking scientists conducted research in this direction, that is, they studied the language of official documentation and written monuments of the XV–XIX centuries. This article gave examples from their writings. In the works it was noted that Chagatai language was the literary language of the Turkic-speaking peoples in the territory belonging to Chagataikhan, the second son of Genghis Khan, after his death. Since then, the anthroponym Chagatai has been widely used as a term in scientific works, subsequently there were such terms as Chagatai writing, Chagatai language, Chagatai culture, Chagatai literature. The result based on the facts in the writings of scholars K. K. Udachin, B. M. Yunusalieva, K. Dyikanova, V. M. Flat, S. Kudaibergenov, V. V. Radlov, N. Ilmenskogo, P. M. Melioransky, K. Berkelman, A. K. Borovkov, N. Samoylovich, N. Vambery, Fuat Koprulu, G. F. Blagova, A. M. Scherbak, who carried out research in this area, it was concluded that the Chagatai language was the literary language of literate among many Turkic peoples who before the October socialist revolution on the basis of their native languages, the formation of the literary language was still at a low level. Therefore, it is concluded that comparing the materials of the modern Kyrgyz language with the Chagatai language, their proximity and kinship should be taken as an object of special research to reveal the causes of the history of the origin of the modern Kyrgyz language in the in-depth study.