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pyrolusite
(Encyclopedia)pyrolusite pīˈrōlo͞ozīt [key], naturally occurring manganese dioxide, MnO2, a black mineral that crystallizes in the tetragonal system but is usually found in earthy or massive deposits. It is th...Boa Vista
(Encyclopedia)Boa Vista bōˈə vēshˈtə [key], city, capital of Roraima state, NW Brazil, on the Rio Branco. Its ...Obed Wild and Scenic River
(Encyclopedia)Obed Wild and Scenic River: see National Parks and Monuments (table)national parks and monuments (table). ...Castro, Américo
(Encyclopedia)Castro, Américo ämāˈrēkō käsˈtrō [key], 1885–1972, Spanish philologist and literary critic, b. Brazil. After the Spanish Civil War, Castro's studies focused on how modern Spanish history wa...Olinda
(Encyclopedia)Olinda o͝olēnˈdə [key], city (1991 pop. 341,394), Pernambuco state, E Brazil, on the Atlantic Ocean. Founded in 1537, it was captured by the Dutch in the 1630s and burned to the ground. The rebuil...isinglass
(Encyclopedia)isinglass īˈzənglăsˌ [key], gelatinous semitransparent substance obtained by cleaning and drying the air bladders of the sturgeon, cod, hake, and other fishes. Isinglass is manufactured in Russia...Amazonas
(Encyclopedia)Amazonas äməzōˈnəs [key], state, 604,032 sq mi (1,564,445 sq km), NW Brazil. The capital is Manaus. ...Barbosa, Ruy
(Encyclopedia)Barbosa, Ruy ro͞oˈē bärbōˈsä [key], 1849–1923, Brazilian jurist, writer, and statesman. He was largely responsible for the republican constitution of Brazil and was the champion of law and li...Murray, river, Australia
(Encyclopedia)Murray, principal and second-longest river of Australia, 1,609 mi (2,589 km) long, rising in the Australian Alps, SE New South Wales, and flowing westward to form the New South Wales–Victoria bounda...Minho, river, Spain
(Encyclopedia)Minho Span mēnˈyō, Port. mēnˈyo͞o [key], Span. Miño, river, c.210 mi (340 km) long, rising in Galicia, NW Spain, and flowing generally SW to the Atlantic Ocean. The Sil is its chief tributary. ...Browse by Subject
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