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Peninsular campaign

(Encyclopedia)Peninsular campaign, in the American Civil War, the unsuccessful Union attempt (Apr.–July, 1862) to capture Richmond, Va., by way of the peninsula between the York and James rivers. Late in May...

Permian period

(Encyclopedia)Permian period pûrˈmēən [key] [from Perm, Russia], sixth and last period of the Paleozoic era (see Geologic Timescale, tablegeologic timescale, table) from 250 to 290 million years ago. Many ma...

electronics

(Encyclopedia)electronics, science and technology based on and concerned with the controlled flow of electrons or other carriers of electric charge, especially in semiconductor devices. It is one of the principal b...

Dominic, Saint

(Encyclopedia)Dominic, Saint dŏmˈənĭk [key], 1170?–1221, Castilian churchman, named Domingo de Guzmán, founder of the Dominicans. He studied at Palencia and became a canon, then prior of canons, of the cathe...

Crimean-Congo hemorrhagic fever

(Encyclopedia)Crimean-Congo hemorrhagic fever, acute, sometimes fatal disease endemic in many parts of Eurasia and Africa, caused by a tick-borne virus. The virus, an RNA virus (Nairovirus) of the Bunyaviridae fami...

Abramoff scandal

(Encyclopedia)Abramoff scandal, in U.S. history, political corruption scandal resulting from criminal conduct on the part of lobbyist Jack Abramoff (1959–) and his associates. Abramoff was a Republican activist w...

Griffith, D. W.

(Encyclopedia)Griffith, D. W. (David Llewelyn Wark Griffith), 1875–1948, American movie director and producer, b. La Grange, Ky. Griffith was the first major American film director. He began his film career as an...

gadolinium

(Encyclopedia)gadolinium gădəlĭnˈēəm [key], metallic chemical element; symbol Gd; at. no. 64; at. wt. 157.25; m.p. 1,312℃; b.p. 3,233℃; sp. gr. 7.898 at 25℃; valence +3. Gadolinium is a malleable, ducti...

narwhal

(Encyclopedia)narwhal närˈwəl [key], a small arctic whale, Monodon monoceros. The males of the species, and an occasional female, bear a single, tightly spiraled tusk that measures up to 9 ft (2.7 m) in length. ...

Mordovia

(Encyclopedia)Mordovia môrdˈvə [key], constituent republic (1990 est. pop. 965,000), c.10,000 sq mi (25,900 sq km), E European Russia. Once a densely forested steppe, it consists of the Volga upland in the east ...