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Pan-American Highway

(Encyclopedia)Pan-American Highway, system of roads, c.16,000 mi (25,750 km) long, linking the nations of the Western Hemisphere. It was suggested at the Fifth International Conference of American States (1923) and...

Floyd, Carlisle

(Encyclopedia)Floyd, Carlisle (Carlisle Sessions Floyd, Jr.), 1926–, American composer, b. Latta, S.C., grad. Syracuse Univ. (B.A., 1946; M.A., 1949). His reputation rests on his operas, for which he writes both ...

forging

(Encyclopedia)forging, shaping metal by heating it and then hammering or rolling it. Forging is the method by which metal was first worked when it came into use about 4000 b.c. in Egypt and Asia. Modern forging is ...

fusion

(Encyclopedia)fusion, in physics. 1 The change of a substance from the solid to the liquid state, also known as melting. The heat given up by a unit mass of a substance during fusion is called the latent heat of fu...

garter snake

(Encyclopedia)garter snake, harmless snake of the genus Thamnophis, abundant from Canada to Central America. There are many common species; members of most species are about 2 ft (60 cm) long. Most garter snakes ar...

Southern Ocean

(Encyclopedia)Southern Ocean or Antarctic Ocean, name sometimes given to those parts of the Pacific, Atlantic, and Indian oceans that surround Antarctica S of roughly 60°S. These waters are marked by the Antarctic...

camellia

(Encyclopedia)camellia kəmēlˈyə [key] [for G. J. Kamel, a Moravian Jesuit missionary], any plant of the genus Camellia in the tea family, evergreen shrubs or small trees native to Asia but now cultivated extens...

neuralgia

(Encyclopedia)neuralgia no͝orălˈjə, nyo͝o– [key], acute paroxysmal pain along a peripheral sensory nerve. Unlike neuritis, there is no inflammation or degeneration of nerve tissue. Neuralgia occurs commonly ...

macular degeneration

(Encyclopedia)macular degeneration, eye disorder causing loss of central vision. The affected area, the macula, lies at the back of the retina and is the part that produces the sharpest vision. The most serious vis...

cramp

(Encyclopedia)cramp, painful uncontrollable contraction of a muscle or group of muscles. The type that results from cold, strain, or disturbance of circulation (as experienced by swimmers) is eased by massage and t...