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crustacean

(Encyclopedia)CE5 Internal anatomy of a female crayfish, representative of the class Crustacea crustacean krŭstāˈshən [key], primarily aquatic arthropod of the subphylum Crustacea. Most of the 44,000 crusta...

Davis, Sammy, Jr.

(Encyclopedia) Davis, Sammy, Jr. (Samuel George), 1925-1990, American entertainer, b. Harlem, New York City, N.Y. Both of Davis’s parents were dancers who performe...

Cook, Frederick Albert

(Encyclopedia)Cook, Frederick Albert, 1865–1940, American explorer and physician, b. Sullivan co., N.Y. Cook early became interested in the arctic and accompanied the expedition of Robert E. Peary in 1891–92 as...

Ryder, Albert Pinkham

(Encyclopedia)Ryder, Albert Pinkham, 1847–1917, American painter, b. New Bedford, Mass. In 1867 his family moved to New York City. There he studied with W. E. Marshall, the engraver, and at the National Academy o...

sage

(Encyclopedia)sage, any species of the large genus Salvia, aromatic herbs or shrubs of the family Labiatae (mint family). The common sage of herb gardens is S. officinalis, a strongly scented shrubby perennial, nat...

catecholamine

(Encyclopedia)catecholamine kătˌəkôlˈəmēn [key], any of several compounds occurring naturally in the body that serve as hormones or as neurotransmitters in the sympathetic nervous system. The catecholamines ...

Wavell, Archibald Percival Wavell, 1st Earl

(Encyclopedia)Wavell, Archibald Percival Wavell, 1st Earl wāˈvəl [key], 1883–1950, British field marshal and viceroy of India. Wavell first saw service in the South African War and in India. During World War I...

microscope

(Encyclopedia)CE5 Compound microscope microscope, optical instrument used to increase the apparent size of an object. The electron microscope, which is not limited by the powers of optical lenses and light,...

first aid

(Encyclopedia)first aid, immediate and temporary treatment of a victim of sudden illness or injury while awaiting the arrival of medical aid. Proper early measures may be instrumental in saving life and ensuring a ...

Magellanic Clouds

(Encyclopedia)Magellanic Clouds măjˌəlănˈĭk [key], two dwarf galaxies located in the far southern sky and visible to the unaided eye; they are classified as irregular because they show no definite symmetry or...