Gol·con·da (gŏl-kŏn'də) A ruined city of south-central India west of Hyderabad. Capital of an ancient kingdom (c. 1364-1512), it was later one of the five Muslim kingdoms of the Deccan until its capture by Aurangzeb's forces in 1687. Golconda was once known for the diamonds found nearby and cut in the city.