Co·lum·bus (k…-l¾m“b…s). 1. A city of western Georgia on the Chattahoochee River south-southwest of Atlanta. Settled in 1828 on the site of a Creek village, it is a port of entry and major industrial center. Population, 179,278. 2. A city of south-central Indiana south-southeast of Indianapolis. It was a supply depot for Union troops during the Civil War. Population, 31,802. 3. A city of northeast Mississippi near the Alabama border. There are many antebellum houses in the area. Population, 23,799. 4. A city of east-central Nebraska at the confluence of the Loup and Platte rivers west of Omaha. It is a trade, processing, and manufacturing center. Population, 19,480. 5. The capital of Ohio, in the central part of the state. Laid out in 1812, it is a major industrial, commercial, and cultural center. Population, 632,910.