a small district of Germany, in the circle of Lower Saxony. It lies between the duchies of Lunenburg and Brunswick; and may be about 25 miles from east to west, and 36 from north to south. It is watered by the rivers Leine and Innerth. The soil is fertile; and its principal places are Peine, Sarstedt, Bruggen, and Alved. Hildeheim, from whence it takes its name, is governed as an imperial city. Its bishop is now elector of Cologne.

a strong city of Germany, in Lower Saxony, with a Roman Catholic bishop's see, whose bishop is sovereign. It is a free imperial city, though in some things dependent on the bishop. It is a large town, well built and fortified. It is divided into the Old Town and the New, which have each their separate council. It is seated on the river Irnelt, in E. Long. 10° 0' N. Lat. 52° 17'.