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bismuth

(Encyclopedia)bismuth bĭzˈməth [key] [Ger. Weisse Masse=white mass], metallic chemical element; symbol Bi; at. no. 83; at. wt. 208.98040; m.p. 271.3℃; b.p. about 1,560℃; sp. gr. 9.75 at 20℃; valence +3 or ...

Cebu

(Encyclopedia)Cebu sābo͞oˈ [key], island, 1,702 sq mi (4,408 sq km), one of the Visayan Islands, the Philippines, between Leyte and Negros. The coastal plains are intensely cultivated and densely populated. The ...

Mound Builders

(Encyclopedia)Mound Builders, in North American archaeology, name given to those people who built mounds in a large area from the Great Lakes to the Gulf of Mexico and from the Mississippi River to the Appalachian ...

Atacama Desert

(Encyclopedia)Atacama Desert ätäkäˈmä [key], arid region, c.600 mi (970 km) long, N Chile, extending south from the border of Peru. The desert itself, c.2,000 ft (610 m) above sea level, is a series of dry sal...

mineral

(Encyclopedia)mineral, inorganic substance occurring in nature, having a characteristic and homogeneous chemical composition, definite physical properties, and, usually, a definite crystalline form. A few of the mi...

Mantegna, Andrea

(Encyclopedia)Mantegna, Andrea ändrĕˈä mäntĕˈnyä [key], 1431–1506, Italian painter of the Paduan school. He was adopted by Squarcione, whose apprentice he remained until 1456, when he procured his release...

Karachay-Cherkess Republic

(Encyclopedia)Karachay-Cherkess Republic kärächīˈ-chĕrkĕsˈ [key], constituent republic (1990 est. pop. 420,000), c.5,500 sq mi (14,200 sq km), Stavropol Territory, SE European Russia, in the Greater Caucasus...

Klondike

(Encyclopedia)Klondike klŏnˈdīk [key], region of Yukon, NW Canada, just E of the Alaska border. It lies around Klondike River, a small stream that enters the Yukon River from the east at Dawson. The discovery in...

Kaunda, Kenneth David

(Encyclopedia)Kaunda, Kenneth David kounˈdə [key], 1924–2021, African political leader, president of Zambia ...

Hogarth, William

(Encyclopedia)Hogarth, William, 1697–1764, English painter, satirist, engraver, and art theorist, b. London. At the age of 15 he was apprenticed to a silver-plate engraver. He soon made engravings on copper for b...