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chevrotain

(Encyclopedia) chevrotainchevrotainshĕvˈrətānˌ [key], name for several species of small, ruminant mammals of Africa and SE Asia. Although they are also called mouse-deer, chevrotains are not closely…

pontoon

(Encyclopedia) pontoon, one of a number of floats used chiefly to support a bridge, to raise a sunken ship, or to float a hydroplane or a floating dock. Pontoons have been built of wood, of hides…

snapping turtle

(Encyclopedia) snapping turtle, large, aggressive New World freshwater turtle. The two snapping turtle species are the sole members of the family Chelydridae. Snapping turtles prefer quiet, muddy…

rammed earth

(Encyclopedia) rammed earth, material consisting chiefly of soil of sufficiently stiff consistency that has been placed in forms and pounded down. It has been used for buildings and walls since…

Reclamation, United States Bureau of

(Encyclopedia) Reclamation, United States Bureau of, agency set up in the Dept. of the Interior under the Reclamation Act of 1902. It is charged with promoting regional economies by developing water…

rainproof fabric

(Encyclopedia) rainproof fabric: see waterproof and water-repellent fabrics.

Euphrates

(Encyclopedia) EuphratesEuphratesy&oomacr;frāˈtēz [key], Turkish Frat, Arabic Al Furat, river of SW Asia, c.1,700 mi (2,740 km) long, formed by the confluence of the Kara and the Murad rivers, E…

carbon cycle

(Encyclopedia) CE5 Carbon cycle carbon cycle, in biology, the exchange of carbon between living organisms and the nonliving environment. Inorganic carbon dioxide in the atmosphere is converted by…

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…

paper

(Encyclopedia) paper, thin, flat sheet or tissue made usually from plant fiber but also from rags and other fibrous materials. It is used principally for printing and writing on but has many other…