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Potomac
(Encyclopedia)Potomac pətōˈmək [key], river, 285 mi (459 km) long, formed SE of Cumberland, Md., by the confluence of its North and South branches and flowing generally SE to Chesapeake Bay. It forms part of th...tetany
(Encyclopedia)tetany tĕtˈənē [key], condition of mineral imbalance in the body that results in severe muscle spasms. Tetany occurs when the concentration of calcium ions (Ca++) in extracellular fluids such as p...fog
(Encyclopedia)fog, aggregation of water droplets or ice crystals immediately above the surface of the earth (i.e., a cloud near the ground). A light or thin fog is usually called a mist. Fog may occur when the mois...Amos
(Encyclopedia)Amos āˈməs [key], prophetic book of the Bible. The majority of its oracles are chronologically earlier than those of the Bible's other prophetic books. His activity is dated c.760 b.c. The prophet ...Gilbert, Grove Karl
(Encyclopedia)Gilbert, Grove Karl, 1843–1918, American geologist, b. Rochester, N.Y., grad. Univ. of Rochester, 1862. When the U.S. Geological Survey was created in the Dept. of the Interior in 1879 (to replace f...water wheel, device
(Encyclopedia)water wheel, device for utilizing the power of flowing or falling water. The Norse wheel is the oldest type known. Despite its name it probably originated in the Middle East, where the swift stream re...Ottawa, indigenous people of North America
(Encyclopedia)Ottawa ōdäˈwə [key], Native Americans whose language belongs to the Algonquian branch of the Algonquian-Wakashan linguistic stock (see Native American languages). Traditionally of the Eastern Wood...wild rice
(Encyclopedia)wild rice, tall aquatic plant (Zizania aquatica) of the family Poaceae (grass family), of a genus separate from common rice (Oryza). Wild rice (called also Canada rice, Indian rice, and water oats) is...Newport, Christopher
(Encyclopedia)Newport, Christopher, 1565?–1617, English mariner, commander of early voyages to Virginia. He commanded a privateering expedition to the West Indies (1592) that returned to England with the Spanish ...Clyde
(Encyclopedia)Clyde, principal river of SW Scotland, 106 mi (171 km) long, rising in the Southern Uplands and flowing generally NW through Glasgow to the Firth of Clyde. It drains c.1,480 sq mi (3,830 sq km). The l...Browse by Subject
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