member of the Turkic language family (a subfamily of the Altaic languages), belonging to the northwestern, or Kipchak, branch. The Kazak language is spoken primarily in Kazakhstan and in the Uighur Autonomous Region of Sinkiang in China but is also found in Uzbekistan, Mongolia, and Afghanistan. The so-called Kipchak-Uzbek dialect is closely related to Kazak (Kazakh) and is considered by some to be a Kazak dialect (its speakers, however, use the Uzbek literary language). See also Turkic languages.