a city in eastern Sweden, on the Stångå River near where it flows into Lake Roxen and becomes part of the Göta Canal system. The capital of the county (län) of Östergöt-land. Population, 104,600 (1971). Linköping is an ancient industrial, commercial, and cultural center. The city’s industries include machine building (including motor vehicles and airplanes) and the production of ball bearings and wire, as well as textile, garment, chemical, furniture, and food enterprises. A branch of the University of Stockholm and a polytechnical institute are located in the city. Linköping was founded in 1120.