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oyster

(Encyclopedia)oyster, bivalve mollusk found in beds in shallow, warm waters of all oceans. The shell is made up of two valves, the upper one flat and the lower convex, with variable outlines and a rough outer surfa...

Superior, Lake

(Encyclopedia)Superior, Lake, largest freshwater lake in the world, 31,820 sq mi (82,414 sq km), 350 mi (563 km) long and 160 mi (257 km) at its greatest width, bordered on the W by NE Minnesota, on the N and E by ...

Rodin, Auguste

(Encyclopedia)Rodin, Auguste ōgüstˈ rōdăNˈ [key], 1840–1917, French sculptor, b. Paris. He began his art study at 14 in the Petite École and in the school of Antoine Barye, earning his living by working fo...

Smith, Joseph

(Encyclopedia)Smith, Joseph, 1805–44, American Mormon leader, founder of the Church of Jesus Christ of the Latter-day Saints, b. Sharon, Vt. When he was a boy his family moved to Palmyra, N.Y., where he experienc...

soap

(Encyclopedia)soap, a cleansing agent. It cleanses by lowering the surface tension of water, by emulsifying grease, and by absorbing dirt into the foam. Ancient peoples are believed to have employed wood ashes and ...

Sichuan

(Encyclopedia)Sichuan or Szechwan sŭˈchwänˈ [key] [four rivers], province (2010 pop. 80,418,200), c.220,000 sq mi (569,800 sq km), SW China. The capital is Chengdu. A naturally isolated region surrounded by mou...

friction

(Encyclopedia)friction, resistance offered to the movement of one body past another body with which it is in contact. In certain situations friction is desired. Without friction the wheels of a locomotive could not...

pyramid, structure

(Encyclopedia)pyramid. The true pyramid exists only in Egypt and Sudan, though the term has also been applied to similar structures in other countries. Egyptian pyramids are square in plan and their triangular side...

mulberry

(Encyclopedia)CE5 Red mulberry, Morus rubra mulberry, common name for the Moraceae, a family of deciduous or evergreen trees and shrubs, often climbing, mostly of pantropical distribution, and characterized by ...

Dylan, Bob

(Encyclopedia)Dylan, Bob dĭlˈən [key], 1941–, American singer and composer, b. Duluth, Minn., as Robert Zimmerman. Dylan learned guitar at the age of 10 and autoharp and harmonica at 15. After a rebellious you...