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eutrophication
(Encyclopedia)eutrophication yo͞otrōˌfĭkāˈshən [key], aging of a lake by biological enrichment of its water. In a young lake the water is cold and clear, supporting little life. With time, streams draining i...attention deficit hyperactivity disorder
(Encyclopedia)attention deficit hyperactivity disorder (ADHD), formerly called hyperkinesis or minimal brain dysfunction, a chronic, neurologically based syndrome characterized by any or all of three types of behav...Astaire, Fred
(Encyclopedia)Astaire, Fred əstârˈ [key], 1899–1987, American dancer, actor, and singer, b. Omaha, Nebr., as Frederick Austerlitz. After 1911 he and his sister Adele (1896–1981), b. Adele Marie Austerlitz, f...Walker, William
(Encyclopedia)Walker, William, 1824–60, American filibuster in Nicaragua, b. Nashville, Tenn. Walker, a qualified doctor, a lawyer, and a journalist by the time he was 24, sought a more adventurous career. After ...trumpet
(Encyclopedia)trumpet, brass wind musical instrument of part cylindrical, part conical bore, in the shape of a flattened loop and having three piston valves to regulate the pitch. Its origin is ancient; records of ...Tarnovsky, Andrei
(Encyclopedia)Tarnovsky, Andrei, 1932–86, Soviet film director, grad. State Institute of Cinematography (1960), where he made several notable short films. The son of poet Arseni Tarkovsky, he is perhaps the fines...betta
(Encyclopedia)betta bĕtˈə [key] or fighting fish, small, freshwater fish of the genus Betta, found in Thailand and the Malay Peninsula. Best known is the Siamese fighting fish, Betta splendens. Mature males of t...adolescence
(Encyclopedia)adolescence, time of life from onset of puberty to full adulthood. The exact period of adolescence, which varies from person to person, falls approximately between the ages 12 and 20 and encompasses b...Noriega, Manuel Antonio
(Encyclopedia)Noriega, Manuel Antonio mänwĕlˈ äntōˈnyō nôryāˈgə [key], 1934–2017, Panamanian general. Commander of the Panamanian Defense Forces from 1983, when he promoted himself to full general, Nor...Plymouth Brethren
(Encyclopedia)Plymouth Brethren, group of Christian believers originating in the early 19th cent. in Ireland and spreading from there to the Continent (especially Switzerland), the British dominions, and the United...Browse by Subject
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