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Martha Graham
Martha Graham 1894-1991, American dancer, choreographer, and teacher, b. Pittsburgh. Her family moved from Allegheny, Pa., to Santa Barbara, Calif., when she was 14. After 1916, Graham attended the Denishawn School, Los Angeles; in 1920 she made her debut in Ted Shawn's Xochitl, which was created...
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epiglottis
epiglottis A leaf-shaped piece of cartilage covered by mucous membrane, sited vertically against the back of the root of the tongue and in front of the glottis — the opening into the larynx. The upper part of the epiglottis is free to bend back and down; also the arrangement of nearby folds o...
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Mount Pinatubo
Mount Pinatubo , active volcano, 5,840 ft (1,780 m), central Luzon island, the Philippines, c.55 mi (90 km) NW of Manila. Dormant for 600 years, it began erupting on Apr. 2, 1991. Most residents had evacuated surrounding areas when Pinatubo erupted catastrophically (June 15, 1991), killing over 500 ...
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relay
relay electromechanical switch operated by a flow of electricity in one circuit and controlling the flow of electricity in another circuit. A relay consists basically of an electromagnet with a soft iron bar, called an armature, held close to it. A movable contact is connected to the armature in ...
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Daniel Hale Williams
Daniel Hale Williams 1858-1931, American surgeon, b. Hollidaysburg, Pa., M.D. Northwestern Univ., 1883. As surgeon of the South Side Dispensary in Chicago (1884-91), he became keenly aware of the lack of facilities for training African Americans like himself as doctors and nurses. As a result he or...
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cleft palate
cleft palate incomplete fusion of bones of the palate. The cleft may be confined to the soft palate at the back of the mouth; it may include the hard palate, or roof of the mouth; or it may extend through the gum and lip, producing a gap in the teeth and a cleft lip, which is cosmetically difficult...
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gigantism
gigantism condition in which an animal or plant is far greater than normal in size. Plants are often deliberately bred to increase their size. However, among animals, gigantism is usually the result of hereditary and glandular disturbance. Among humans, gigantism is produced by an oversecretion of ...
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glaucoma
glaucoma , ocular disorder characterized by pressure within the eyeball caused by an excessive amount of aqueous humor (the fluid substance filling the eyeball). This causes pressure against the optic nerve and compression of the blood vessels of the eye—the resulting impairment of vision rang...
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Nepal
Nepal , independent nation (2005 est. pop. 27,677,000), c.54,000 sq mi (139,860 sq km), central Asia. Landlocked and isolated by the Himalayas, Nepal is bordered on the west, south, and east by India, and on the N by the Tibet region of China. Katmandu is the capital.
Land and People
Geo...
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Malawi
Malawi , officially Republic of Malawi, republic (2005 est. pop. 12,159,000), 45,200 sq mi (117,068 sq km), E central Africa. It borders on Zambia in the west, on Tanzania in the north, and on Mozambique in the east, south, and southwest. The capital is Lilongwe ; Blantyre is its largest city and...
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