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Beeson, Jack

(Encyclopedia) Beeson, Jack, 1921–2010, American composer, b. Muncie, Ind. Beeson studied at the Eastman School of Music and privately in New York with Béla Bartók. Teaching at Columbia from 1945, he…

ultrasound

(Encyclopedia) ultrasound or sonography, in medicine, technique that uses sound waves to study and treat hard-to-reach body areas. In scanning with ultrasound, high-frequency sound waves are…

pleura

(Encyclopedia) pleurapleurapl&oobreve;rˈə [key], membranous lining of the upper body cavity and covering for the lungs. The pleura is a two-layered structure: the parietal pleura lines the walls…

sleep apnea

(Encyclopedia) sleep apnea, episodes of interrupted breathing during sleep. Obstructive sleep apnea is a common disorder in which relaxation of muscles in the throat repeatedly close off the airway…

sand dollar

(Encyclopedia) sand dollar, common name for a marine animal in the same phylum as the starfish (see sea star). The sand dollar has a rigid, flattened, disk-shaped test, or shell, made of firmly…

rib

(Encyclopedia) rib, one of the slender, elongated, curved bones that compose the chest cage in higher vertebrates. Ribs occur in pairs, and are found in most vertebrates; however, in some lower…

sympathomimetic drug

(Encyclopedia) sympathomimetic drugsympathomimetic drugsĭmpăthˌōmĭmĕtˈĭk [key], any of a group of substances whose actions resemble the response of stimulated sympathetic nerves (see nervous system…

Louis XVII, titular king of France

(Encyclopedia) Louis XVII (Louis Charles), 1785–1795?, titular king of France (1793–95), known in popular legend as the “lost dauphin.” The second son of King Louis XVI and Queen Marie Antoinette, he…

Lynch, David (Keith)

(Encyclopedia) Lynch, David (Keith), 1946–, American film and television writer, producer, and director, b. Missoula, Mont. Trained as a painter, he studied at the Corcoran School of Art, Washington…

Miller, Henry

(Encyclopedia) Miller, Henry, 1891–1980, American author, b. New York City. Miller sought to reestablish the freedom to live without the conventional restraints of civilization. His books are…