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helicopter

(Encyclopedia)helicopter, type of aircraft in which lift is obtained by means of one or more power-driven horizontal propellers called rotors. When the rotor of a helicopter turns it produces reaction torque which ...

Stephen, Sir Leslie

(Encyclopedia)Stephen, Sir Leslie, 1832–1904, English author and critic. The first serious critic of the novel, he was also editor of the great Dictionary of National Biography from its beginning in 1882 until 18...

sorghum

(Encyclopedia)sorghum, tall, coarse annual (Sorghum bicolor) of the family Poaceae (grass family), somewhat similar in appearance to corn (but having the grain in a panicle rather than an ear) and used for much the...

Butler, Benjamin Franklin, 1818–93, American politician and Union general in the Civil War

(Encyclopedia)Butler, Benjamin Franklin, 1818–93, American politician and Union general in the Civil War, b. Deerfield, N.H. He moved to Lowell, Mass., as a youth and later practiced law there and in Boston. He w...

Whitehead, Alfred North

(Encyclopedia)Whitehead, Alfred North, 1861–1947, English mathematician and philosopher, grad. Trinity College, Cambridge, 1884. There he was a lecturer in mathematics until 1911. At the Univ. of London he was a ...

dictionary

(Encyclopedia)dictionary, published list, in alphabetical order, of the words of a language. In monolingual dictionaries the words are explained and defined in the same language; in bilingual dictionaries they are ...

Columbia University

(Encyclopedia)Columbia University, mainly in New York City; founded 1754 as King's College by grant of King George II; first college in New York City, fifth oldest in the United States; one of the eight Ivy League ...

megachurch

(Encyclopedia)megachurch, large Protestant church with an average weekly attendance of 2,000 or more; relatively uncommon until after 1970. In the United States, where most megachurches are located, there were more...

Messiaen, Olivier

(Encyclopedia)Messiaen, Olivier ôlēvyāˈ mĕsyäNˈ [key], 1908–92, French composer and organist, b. Avignon. Messiaen was a pupil of Paul Dukas at the Paris Conservatory. He became organist of La Trinité, Pa...

Moynihan, Daniel Patrick

(Encyclopedia)Moynihan, Daniel Patrick moiˈnĭhănˌ [key], 1927–2003, American sociologist and politician, b. Tulsa, Okla., grad. Tufts (B.A., 1948; M.A., 1949; Ph.D., 1961). Raised in a poor neighborhood of Ne...