(Encyclopedia) goldenrod, any species of the large genus Solidago of the family Asteraceae (aster family), chiefly North American weedy herbs. They have small yellow flowers clustered, often in…
(Encyclopedia) Gibson, John, 1740–1822, American frontiersman, b. Lancaster, Pa. After taking part in the capture (1758) of Fort Duquesne (renamed Fort Pitt) in the French and Indian War, he became a…
(Encyclopedia) electronegativityelectronegativityĭlĕkˌtrōnĕgətĭvˈətē [key], in chemistry, tendency for an atom to attract a pair of electrons that it shares with another atom (see chemical bond). For…
(Encyclopedia) Dugdale, Richard LouisDugdale, Richard Louisdŭgˈdāl [key], 1841–83, American social investigator, b. Paris. While inspecting (1874) county jails for the New York Prison Association, he…
(Encyclopedia) Ronaldo, Cristiano (Cristiano Ronaldo dos Santos Aveiro), 1985–, Portuguese soccer player. A forward, he began professional play in 2001 with Sporting Portugal. With Manchester United…
(Encyclopedia) Saroyan, WilliamSaroyan, Williamsəroiˈən [key], 1908–81, American author, b. Fresno, Calif. Of Armenian background and extremely prolific, he created works that combine optimism,…
(Encyclopedia) Rallis, Greek political family. Dimitrios Rallis, 1844–1921, a three-time premier, he was first in the office in May–Oct., 1897. Although he managed to arrange an armistice between…
(Encyclopedia) Boucher, FrançoisBoucher, FrançoisfräNswäˈ b&oomacr;shāˈ [key], 1703–70, French painter. Boucher's art embodied the spirit of his time; it was elegant, frivolous, and artificial.…
(Encyclopedia) Bond, Julian (Horace Julian Bond), 1940–2015, U.S. civil-rights leader, b. Nashville, Tenn. As a student at Morehouse College, he participated in sit-ins at segregated Atlanta…
(Encyclopedia) acceleration, change in the velocity of a body with respect to time. Since velocity is a vector quantity, involving both magnitude and direction, acceleration is also a vector. In…
