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ocher

(Encyclopedia)ocher ōˈkər [key], mixture of varying proportions of iron oxide and clay, used as a pigment. It occurs naturally as yellow ocher (yellow or yellow-brown in color), the iron oxide being limonite, or...

Amundsen, Roald

(Encyclopedia)Amundsen, Roald (Roald Engelbregt Grauning Amundsen) rōˈäl äˈmo͝onsən [key], 1872–1928, Norwegian polar explorer; the first person to reach the South Pole. He served (1897–99) as first mate...

Phaeophyta

(Encyclopedia)Phaeophyta fēŏfˈətə [key], phylum (division) of the kingdom Protista consisting of those organisms commonly called brown algae. Many of the world's familiar seaweeds are members of Phaeophyta. Th...

color-field painting

(Encyclopedia)color-field painting, abstract art movement that originated in the 1960s. Coming after the abstract expressionism of the 1950s, color-field painting represents a sharp change from the earlier movement...

Nobile, Umberto

(Encyclopedia)Nobile, Umberto o͞ombĕrˈtō nōˈbēlā [key], 1885–1978, Italian aeronautical engineer and arctic explorer. He designed the dirigible Norge and piloted it in the Amundsen-Ellsworth flight over t...

Brown v. Board of Education of Topeka, Kans.

(Encyclopedia)Brown v. Board of Education of Topeka, Kans., case decided by the U.S. Supreme Court in 1954. Linda Brown was denied admission to her local elementary school in Topeka because she was black. When, com...

Hughes, Thomas

(Encyclopedia)Hughes, Thomas, 1822–96, English author. A lawyer, Hughes eventually became a judge; he was also a Liberal member of Parliament and worked assiduously for social reforms. His novel of school life, T...

limonite

(Encyclopedia)limonite hĕmˈətīt, hēˈ– [key], yellowish to dark brown mineral, a hydrated oxide of iron, FeO(OH)·nH2O, occurring commonly in deposits of secondary origin, i.e., those formed by the alteratio...

Lewis, Sinclair

(Encyclopedia)Lewis, Sinclair, 1885–1951, American novelist, b. Sauk Centre, Minn., grad. Yale Univ., 1908. Probably the greatest satirist of his era, Lewis wrote novels that present a devastating picture of midd...

Brussels griffon

(Encyclopedia)Brussels griffon, breed of sturdy toy dog developed in Belgium in the 18th and 19th cent. It stands about 8 in. (20.3 cm) high at the shoulder and weighs from 6 to 12 lb (2.7–5.5 kg). There are two ...