Sri Lanka (srē läng'ku) [key][Sinhalese,=resplendent land], formerly Ceylon,ancient Taprobane, officially Democratic Socialist Republic of Sri Lanka, island republic (2005 est. pop. 20,065,000), 25,332 sq mi (65,610 sq km), in the Indian Ocean, just SE of India. It is an independent member of the Commonwealth of Nations. The capital is Sri Jayewardenapura Kotte. Colombo, the former capital (and still the site of many government offices), is the commercial capital and largest city.