1a river of South America, which rises in SE Brazil and flows some 3,300 km (2,060 miles) southwards to the River Plate estuary in Argentina. For part of its length it forms the SE border of Paraguay.
2a river port in eastern Argentina, on the Paraná River; population 249,500 (est. 2005).
3a state of southern Brazil, on the Atlantic coast; capital, Curitiba.
