BORMIO, a county depending on the republic of the Grisons in Switzerland. It is bounded on the south by the state of Venice, on the east by the territory of the house of Austria, and on the south and west by Caddea. It is 15 miles over both ways; and is divided into five communities, viz. the town of Bormio, the valley of Forbia, the Interior Valley, the Lower Valley, and the Valley of Luveno. Bormio is the only town in this district; and has a governor called a podesta, sent by the Grisons to preside in civil and criminal affairs. It is seated at the confluence of the rivers Addo and Isalacua, in E. Long. 10. 10. N. Lat. 46. 45.