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actinium

(Encyclopedia)actinium ăktĭnˈēəm [key] [Gr.,=like a ray], radioactive chemical element; symbol Ac; at. no. 89; mass number of most stable isotope 227; m.p. about 1,050℃; b.p. 3,200℃±300℃; sp. gr. 10.07;...

Brazzaville

(Encyclopedia)Brazzaville brăzˈəvĭl, Fr. bräzävēlˈ [key], city (1984 pop. 585,812), capital of the Republic of the Congo, on Pool Malebo of the Congo River. It is the nation's largest city and its administr...

tragedy

(Encyclopedia)tragedy, form of drama that depicts the suffering of a heroic individual who is often overcome by the very obstacles he is struggling to remove. The protagonist may be brought low by a character flaw ...

Debussy, Claude Achille

(Encyclopedia)Debussy, Claude Achille klôd äshēlˈ dəbüsēˈ [key], 1862–1918, French composer, exponent of musical impressionism. He studied for 11 years at the Paris Conservatory, receiving its Grand Prix ...

Chrétien, Jean

(Encyclopedia)Chrétien, Jean (Joseph Jacques Jean Chrétien) zhōsĕfˈ zhäk zhäN krātyăNˈ [key], 1934–, Canadian politician and prime minister (1993–2003), b. Quebec. He received his legal education at Q...

Poitiers

(Encyclopedia)Poitiers pwätyāˈ [key], city (1990 pop. 82,507), capital of Vienne dept., W central France, on the Clain River. The ancient capital of Poitou, it is now an industrial, agricultural, and communicati...

Boston Symphony Orchestra

(Encyclopedia)Boston Symphony Orchestra, founded in 1881 by Henry Lee Higginson, who was its director and financial backer until 1918. The orchestra performed at the Old Boston Music Hall for nearly 20 years until ...

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...

parachute

(Encyclopedia)parachute, umbrellalike device designed to retard the descent of a falling body by creating drag as it passes through the air. The development of modern aircraft has led to many experiments in the aer...

materialism

(Encyclopedia)materialism, in philosophy, a widely held system of thought that explains the nature of the world as entirely dependent on matter, the fundamental and final reality beyond which nothing need be sought...