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Ellesmere Island

(Encyclopedia) Ellesmere Island, 82,119 sq mi (212,688 sq km), c.500 mi (800 km) long, in the Arctic Ocean, N Nunavut Territory, Canada; second largest and northernmost island of the Arctic…

isopod

(Encyclopedia) isopodisopodīˈsəpŏdˌ [key], common name for crustaceans belonging to the order Isopoda and in the same subclass as lobsters and crayfish. Isopods are characterized by their flattened…

Paraná, river, Brazil, Paraguay, and Argentina

(Encyclopedia) Paraná, river, c.2,000 mi (3,200 km) long, formed by the junction of the Paranaíba and the Rio Grande, SE Brazil. It has the second largest drainage system in South America. It flows…

Orvieto

(Encyclopedia) OrvietoOrvietoōrvyĕˈtō [key], city (1991 pop. 21,419), in Umbria, central Italy, on the Poglia River. Situated at the top of a rocky hill, it is a tourist and pilgrimage center.…

McCloskey, Robert

(Encyclopedia) McCloskey, Robert (John Robert McCloskey)McCloskey, Robertməklŏˈskē [key], 1914–2003, American writer and illustrator of children's books, b. Hamilton, Ohio. He studied at the Vesper…

pitchblende

(Encyclopedia) pitchblendepitchblendepĭchˈblĕndˌ [key], dark, lustrous, heavy mineral, a source of radium and uranium. Largely natural uranium oxides, triuranium octaoxide (U3O8) and uranium dioxide…

phlebitis

(Encyclopedia) phlebitisphlebitisfləbīˈtĭs [key], inflammation of a vein. Phlebitis is almost always accompanied by a blood clot, or thrombus, in the affected vein, a condition known as…

Carducci, Giosuè

(Encyclopedia) Carducci, GiosuèCarducci, Giosuèjōz&oomacr;āˈ [key]Carducci, Giosuè kärd&oomacr;tˈchē [key], 1835–1907, Italian poet and teacher. He was professor of literature at the Univ. of…

tang, in zoology

(Encyclopedia) tang, common name for certain members of the Acanthuridae, a family of mostly small, mainly reef-dwelling tropical fishes with compressed bodies and small mouths and teeth. Other…