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floodplain

(Encyclopedia) floodplain, level land along the course of a river formed by the deposition of sediment during periodic floods. Floodplains contain such features as levees, backswamps, delta plains,…

Whitney, Asa

(Encyclopedia) Whitney, Asa, 1797–1872, American merchant and transcontinental railroad projector, b. North Groton, Conn. He entered the mercantile business in New York City, acted as a foreign buyer…

boiler

(Encyclopedia) boiler, device for generating steam. It consists of two principal parts: the furnace, which provides heat, usually by burning a fuel, and the boiler proper, a device in which the heat…

Kreuger, Ivar

(Encyclopedia) Kreuger, IvarKreuger, Ivarēˈvär kr&oomacr;ˈgər [key], 1880–1932, Swedish financier. After studying engineering in Stockholm and engaging in construction enterprises in the United…

half-timber house

(Encyclopedia) half-timber house, type of construction of the Middle Ages in N Europe, used chiefly for dwellings. Some French examples date from the 12th cent., and by the 13th cent. the building…

Cookeville

(Encyclopedia) Cookeville, city (2020 pop. 34,842), seat of Putnam co., N central Tenn.; inc. 1854. It is a farm trade center that also produces…

cement

(Encyclopedia) cement, binding material used in construction and engineering, often called hydraulic cement, typically made by heating a mixture of limestone and clay until it almost fuses and then…

weathering

(Encyclopedia) weathering, collective term for the processes by which rock at or near the earth's surface is disintegrated and decomposed by the action of atmospheric agents, water, and living things…

Green, Anna Katherine

(Encyclopedia) Green, Anna Katherine, 1846–1935, American detective-story writer, b. Brooklyn, N.Y., grad. Ripley Female College, Poultney, Vt., 1867. Of her many thrillers, characterized by logical…

Uniondale

(Encyclopedia) Uniondale, uninc. residential city (1990 pop. 20,328), Nassau co., SE N.Y., on Long Island. Downtown suburban growth since the 1970s has included construction of the Nassau Coliseum,…