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water hog

(Encyclopedia) water hog: see capybara.

water lily

(Encyclopedia) CE5 Fragrant water lily, Nymphaea odorata water lily, common name for some members of the Nymphaeaceae, a family of freshwater perennial herbs found in most parts of the world and…

water moccasin

(Encyclopedia) water moccasin or cottonmouth, highly venomous snake, Ancistrodon piscivorus, of the swamps and bayous of the S United States. Like the closely related copperhead, it is a pit viper…

water mold

(Encyclopedia) water mold, common name for a group of multinucleated organisms that superficially resemble fungi but are now recognized as having an independent evolutionary lineage and are placed in…

water oats

(Encyclopedia) water oats: see wild rice.

water pollution

(Encyclopedia) water pollution, contamination of water resources by harmful wastes; see also sewerage, water supply, pollution, and environmentalism. The United States has enacted extensive federal…

water polo

(Encyclopedia) water polo, swimming game encompassing features of soccer, football, basketball, and hockey. The object of the game is to maneuver, by head, feet, or hand, a leather-covered ball 27 to…

water power

(Encyclopedia) water power, mechanical energy derived from falling or flowing water, e.g., rivers, streams, and the overflow of dams. The wooden water wheel, long utilized for driving machinery in…