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Rondônia(ro͝ondô`nyə), state (1996 pop. 1,132,692), 93,839 sq mi (243,043 sq km), NW Brazil, on the border with Bolivia. Pôrto VelhoPôrto Velho
, city (1996 pop. 287,534), capital of Rondônia state, NW Brazil, on the Madeira River. It is a rail terminus and the last point of navigation on the river.
..... Click the link for more information. is the capital. Rain forests still cover much of the state, although by the 1980s deforestation had begun to emerge as a serious environmental problem in Rondônia.
a federal territory in northern Brazil, in the Madeira River basin. Area, 243 sq km. Population, 111,000 (1970). The capital is Pôorto Velho. The territory’s economy is based on the gathering of natural rubber, harvesting of Brazil nuts, and manufacture of structural timber. Tin ore is also mined.