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molybdenite

(Encyclopedia)molybdenite məlĭbˈdənīt, mō– [key], a mineral, molybdenum disulfide, MoS2, blue-gray in color, with a metallic luster and greasy feel. It occurs in crystals of the hexagonal system but more co...

Smith, Emmitt

(Encyclopedia)Smith, Emmitt (Emmitt James Smith 3d), 1969–, U.S. football player, b. Pensacola, Fla. An All-America running back at the Univ. of Florida, Smith spent nearly his entire National Football League car...

Cronquist, Arthur C.

(Encyclopedia)Cronquist, Arthur C. krŏngˈkwĭst, krŏnˈ– [key], 1919–92, American systematic botanist. He was the author of two introductory botanical textbooks, with Henry Allan Gleason: The Natural Geograp...

Ohthere

(Encyclopedia)Ohthere ōthērˈə [key], fl. 880, Norse explorer. His account of his voyage around the North Cape, along Lapland, and into the White Sea was incorporated by Alfred the Great in the introduction to h...

Burritt, Elihu

(Encyclopedia)Burritt, Elihu, 1810–79, American reformer, b. New Britain, Conn. A blacksmith, he studied mathematics, languages, and geography and became known as “the learned blacksmith.” Profoundly idealist...

Brown, Charles Brockden

(Encyclopedia)Brown, Charles Brockden, 1771–1810, American novelist and editor, b. Philadelphia, considered the first professional American novelist. After the publication of Alcuin: A Dialogue (1798), he wrote s...

Ortelius, Abraham

(Encyclopedia)Ortelius, Abraham ôrtēˈlyəs [key], 1527–98, Flemish geographer, of German origin. Next to his contemporary Mercator, he is the most renowned of the 16th-century Flemish school of geography. He t...

cliff dwellers

(Encyclopedia)cliff dwellers, Ancestral Pueblo people, sometimes called Anasazi, who were builders of the ancient cliff dwellings found in the canyons and on the mesas of the U.S. Southwest, principally on the trib...

Cunningham, Sir Alexander

(Encyclopedia)Cunningham, Sir Alexander, 1814–93, English archaeologist and army engineer; son of Allan Cunningham. He retired (1861) as a major general after 30 years of service with the Bengal engineers and the...

David, T. W. E.

(Encyclopedia)David, T. W. E. (Sir Tannatt William Edgeworth), 1858–1935, Australian geologist and explorer, b. near Cardiff, Wales. David came to Australia in 1882 as an assistant geological surveyor. In 1891 he...