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hydrotherapy
(Encyclopedia) hydrotherapy, use of water in the treatment of illness or injury. Although the medicinal and hygienic value of water was recognized by the early Greeks, hydrotherapy attained its…drainage, in mining
(Encyclopedia) drainage, in mining, removal of water seeping into shafts and other underground mine workings from the surrounding ground. Unless seeping water is removed continually, it may endanger…hydrate
(Encyclopedia) hydratehydratehīˈdrāt [key], chemical compound that contains water. A common hydrate is the familiar blue vitriol, a crystalline form of cupric sulfate. Chemically, it is cupric…thirst
(Encyclopedia) thirst, sensation indicating the body's need for water. Dry or salty food and dry, dusty air may induce such a sensation by depleting moisture in the mucous membranes of the mouth and…lock, canal
(Encyclopedia) lock, canal, stretch of water enclosed by gates, one at each end, built into a canal or river for the purpose of raising or lowering a vessel from one water level to another. A lock…Parker Dam
(Encyclopedia) Parker Dam, at the Ariz.–Calif. line, on the Colorado River; completed 1938. It is 320 ft (98 m) high and 856 ft (261 m) long. The dam impounds water for Los Angeles and other coastal…clepsydra
(Encyclopedia) clepsydraclepsydraklĕpˈsĭdrə [key] or water clock, ancient device for measuring time by means of the flow of water from a container. A simple form of clepsydra was an earthenware…hydrolysis
(Encyclopedia) hydrolysishydrolysishīdrŏlˈĭsĭs [key], chemical reaction of a compound with water, usually resulting in the formation of one or more new compounds. The most common hydrolysis occurs…Great Artesian Basin
(Encyclopedia) Great Artesian Basin, c.670,000 sq mi (1,735,300 sq km), between the Eastern Highlands and the Western Plateau, E central Australia, extending S from the Gulf of Carpentaria,…Delaware Aqueduct
(Encyclopedia) Delaware AqueductDelaware Aqueductdĕlˈəwâr, –wər [key], SE N.Y., 85 mi (137 km) long, carrying water from the Rondout Reservoir, Sullivan co., SE into the New York City water system at…Trending
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