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Ravalomanana, Marc

(Encyclopedia)Ravalomanana, Marc märk rävälōmänänˈ [key], 1949–, Malagasy political leader. He made a fortune manufacturing dairy products and began his political career in 1999 when he was elected mayor o...

aerodynamics

(Encyclopedia)aerodynamics, study of gases in motion. As the principal application of aerodynamics is the design of aircraft, air is the gas with which the science is most concerned. Although aerodynamics is primar...

compression

(Encyclopedia)compression, external stress applied to an object or substance, tending to cause a decrease in volume (see pressure). Gases can be compressed easily, solids and liquids to a very small degree if at al...

Cobden, Richard

(Encyclopedia)Cobden, Richard kŏbˈdən [key], 1804–65, British politician, a leading spokesman for the Manchester school. He made a fortune as a calico printer in Manchester. A firm believer in free trade, afte...

giant clam

(Encyclopedia)giant clam, common name for the largest bivalve mollusk in the world, Tridacna gigas, also known as the bear's paw clam. The giant clam may weigh over 500 lb (225 kg) and attain a length of over 4 ft ...

George I, king of Greece

(Encyclopedia)George I, 1845–1913, king of the Hellenes (1863–1913), second son of Christian IX of Denmark. After the deposition (1862) of Otto I, he was elected to succeed on the throne of Greece. Much more ef...

jackrabbit

(Encyclopedia)jackrabbit, popular name for several hares of W North America, characterized by very long legs and ears. Jackrabbits are powerful jumpers and fast runners. In normal progress leaps are alternated with...

Jackson, Jesse Louis

(Encyclopedia)Jackson, Jesse Louis, 1941–, African-American political leader, clergyman, and civil-rights activist, b. Greenville, S.C. Raised in poverty, he attended the Chicago Theological Seminary (1963–65) ...

apsis

(Encyclopedia)CE5 Apsis points, or apsides, in the earth's orbit: At perihelion the earth is closest to the sun and at aphelion it is farthest from the sun. apsis (pl. apsides), point in the orbit of a body whe...

John of the Cross, Saint

(Encyclopedia)John of the Cross, Saint, Span. Juan de la Cruz, 1542–91, Spanish mystic and poet, Doctor of the Church. His name was originally Juan de Yepes. He was a founder of the Discalced Carmelites and a clo...