Terek
a river in Russian Caucasia, rises near Mount Kasbec, flows in an E. direction, and enters the Caspian by many branches after a course of 350 miles. It has a descent, after reaching the plain (Mosdok), of 40 centimeters to the kilometer, and is utilized for irrigation in the district to which it gives name, and which is specially noted for its warm springs and petroleum wells. The district lying between the province of Stavropol and the highlands of Daghestan, has an area of 34,637 square miles.