Columbia Encyclopedia

(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 during sleep; the...

(Encyclopedia) Quechua, Kechua kēchˈwä [key], linguistic family belonging to the Andean branch of the Andean-Equatorial stock of Native American languages (mainly in South America). Encompassing far more native ...

(Encyclopedia) Belaúnde Terry, Fernando fārnänˈdō bāläo͞onˈdā tāˈrē [key], 1912–2002, president of Peru (1963–68, 1980–85). A successful architect, he served in the chamber of deputies (1945–48)...

(Encyclopedia) Roca, Julio Argentino ho͞oˈlyō ärhāntēˈnō rōˈkä [key], 1843–1914, general who became president of Argentina (1880–86, 1898–1904). Minister of war under Nicolas Avellaneda, he crushed ...

(Encyclopedia) Rottweiler rŏtˈwīlər [key], breed of sturdy working dog developed from a Roman cattle dog introduced into S Germany more than 1,900 years ago. It stands from 213⁄4 to 27 in. (55.3–68.6 cm) hig...

(Encyclopedia) Bain, Alexander, 1818–1903, Scottish philosopher and psychologist. He was educated at Marischal College, Aberdeen, where he later taught for three years. He taught one year (1845) at Anderson's Univ...

(Encyclopedia) Ramallah rämäˈlä [key], city (2007 pop. 27,4000), in the West Bank, N of Jerusalem. The administrative center for the Palestinian Authority, it lies in a fertile farming region where olives, figs,...

(Encyclopedia) salsify, common name for a tall, narrow-leaved biennial (Tragopogon porrifolius) of the family Asteraceae (aster family), native to S Europe but now naturalized and sometimes growing as a weed in Nort...

(Encyclopedia) Eisenach īˈzənäkh [key], city, Thuringia, central Germany. It is an industrial center and ...

(Encyclopedia) Gomułka, Władysław vwädĭsˈwäf gəmo͝oˈkə [key], 1905–82, Polish Communist leader. Long a Communist, he helped establish the Polish Workers' party and was (1943–49) secretary of its centr...