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polycarbonates

(Encyclopedia)polycarbonates, group of clear, thermoplastic polymers used mainly as molding compounds (see plastic). Polycarbonates are prepared by the reaction of an aromatic difunctional phenol with either phosge...

Emigrant Aid Company

(Encyclopedia)Emigrant Aid Company, organization formed in 1854 to promote organized antislavery immigration to the Kansas territory from the Northeast. Eli Thayer conceived the plan as early as Feb., 1854, even be...

saxifrage

(Encyclopedia)saxifrage săkˈsĭfrĭj [key], common name for several members of the Saxifragaceae, a family of widely varying herbs, shrubs, and small trees of cosmopolitan distribution. They are found especially ...

Shakur, Tupac Amaru

(Encyclopedia) Shakur, Tupac Amaru, 1971-1996, African-American rap artist, composer, and actor, b. New York, N.Y., as Lesane Parish Crooks. Tupac’s mother was a ...

Celt

(Encyclopedia)Celt kĕlt [key]. 1 One who speaks a Celtic language or who derives ancestry from an area where a Celtic language was spoken; i.e., one from Ireland, the Scottish Hebrides and Highlands, the Isle of M...

Polypodiophyta

(Encyclopedia)Polypodiophyta pŏlˌēpōˌdēŏfˈətə [key], division of the plant kingdom consisting of the plants commonly called ferns. The ferns are vascular plants with stems, roots, and leaves. The small an...

De Croo, Alexander

(Encyclopedia)De Croo, Alexander, 1975–, Belgian political leader. He worked for the Boston Consulting Group (1999–2006) and his own management consulting firm (2006–9) before entering politics. The son of Be...

Albright, Ivan Le Lorraine

(Encyclopedia)Albright, Ivan Le Lorraine ôlˈbrīt [key], 1897–1983, American painter, b. North Harvey, Ill. Allied with the Magic Realist group, Albright developed a style combining American scene painting with...

Abed, Sir Fazle Hasan

(Encyclopedia)Abed, Sir Fazle Hasan, 1936–2019, Bangladeshi humanitarian. After studying accounting in Britain, he returned (1968) to what was then East Pakistan and began working for Shell Pakistan. In 1970, dur...

Cunningham, Imogen

(Encyclopedia)Cunningham, Imogen, 1883–1976, American photographer, b. Portland, Oreg. Cunningham began taking pictures in 1901. After study abroad she opened a studio in Seattle in 1910 and for six decades produ...