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siderite

(Encyclopedia)siderite kălˈĭbīt [key], a mineral, varying in color from brown, green, or gray to black and occurring in nature in massive and crystalline form. A carbonate of iron, FeCO3, it serves as an iron o...

Sargassum

(Encyclopedia)Sargassum särgăsˈəm [key], genus of brown algae that has given its name to the Sargasso Sea, where it is found in great abundance. See Phaeophyta; seaweed. ...

Onsager, Lars

(Encyclopedia)Onsager, Lars, 1903–76, American physical chemist, b. Oslo, Ph.D. Yale, 1935. Onsager taught at Brown Univ. from 1928 to 1933 and was on the faculty at Yale from 1933 until his retirement in 1972. H...

Southdown sheep

(Encyclopedia)Southdown sheep, mutton breed of sheep originated on the South Downs of Sussex, England, and now raised throughout the world. It is a small sheep, the most thickset of all breeds, and it is valued for...

Weelkes, Thomas

(Encyclopedia)Weelkes, Thomas, c.1575–1623, English composer. His four books of madrigals (1597–1600) mark Weelkes as one of the great English madrigalists. His music is remarkable for melodic characterization ...

Waziristan

(Encyclopedia)Waziristan wəzēˈrĭstänˌ [key], region (1981 est. pop. 545,000), 4,473 sq mi (11,585 sq km), Khyber Pakhtunkhwa (formerly North-West Frontier Province), Pakistan, on the Afghanistan border. An ex...

Jewett, Charles Coffin

(Encyclopedia)Jewett, Charles Coffin jo͞oˈĭt [key], 1816–68, American librarian, b. Lebanon, Maine. Jewett prepared his first catalog of books as librarian of Andover Theological Seminary. He was appointed lib...

Kent State University

(Encyclopedia)Kent State University, mainly at Kent, Ohio; coeducational; founded 1910 as a normal school, became Kent State College in 1929, gained university status in 1935. The university's academic programs and...

Atlanta University Center

(Encyclopedia)Atlanta University Center, at Atlanta, Ga.; coeducational. The largest consortium of historically African-American educational institutions in the country, it was organized in 1929 when three schoolsâ...

Khan, Sadiq Aman

(Encyclopedia)Khan, Sadiq Aman, 1970–, British political leader. The son of Pakistani immigrants, he studied law at the Univ. of North London (now London Metropolitan Univ.) and the College of Law (now the Univ. ...