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Rephidim

(Encyclopedia)Rephidim rĕfˈĭdĭm, rēfĭdˈĭm [key], in the Bible, unlocated place in Sinai where Moses struck the rock and brought forth water. ...

strip cropping

(Encyclopedia)strip cropping, practice of growing field crops in narrow strips either at right angles to the direction of the prevailing wind, or following the natural contours of the terrain to prevent wind and wa...

nitrogen cycle

(Encyclopedia)CE5 Nitrogen cycle nitrogen cycle, the continuous flow of nitrogen through the biosphere by the processes of nitrogen fixation, ammonification (decay), nitrification, and denitrification. Nitrogen...

Ohio, river, United States

(Encyclopedia)Ohio, river, 981 mi (1,579 km) long, formed by the confluence of the Allegheny and Monongahela rivers in SW Pa., at Pittsburgh; it flows northwest, then generally southwest to enter the Mississippi Ri...

Huang He

(Encyclopedia)Huang He, Hwang Ho both: hwängˈ ho͝oˈ [key], or Yellow River, great river of N China, c.3,000 mi (4,830 km) long, rising in the twin lakes Gyaring and Ngoring in the Kunlun Mts., NW Qinghai prov....

Lippe, river, Germany

(Encyclopedia)Lippe, river, c.150 mi (240 km) long, rising in the Teutoburg Forest, W Germany and flowing westward into the Rhine River. It is canalized to permit barge navigation. Water from the Lippe is used in t...

milk of magnesia

(Encyclopedia)milk of magnesia, common name for the chemical compound magnesium hydroxide, Mg(OH)2. The viscous, white, mildly alkaline mixture that is used medicinally as an antacid and laxative is a suspension of...

Gulf

(Encyclopedia)Gulf. For names of bodies of water beginning thus, see second part; e.g., for Gulf of Mexico, see Mexico, Gulf of. ...

Legionnaire's disease

(Encyclopedia)Legionnaire's disease lēˌjənârzˈ [key], infectious, sometimes fatal, disease characterized by high fever, dry cough, lung congestion, and subsequent pneumonia. Major organs, such as the heart, ma...

loon

(Encyclopedia)loon, common name for migratory aquatic birds found in fresh- and saltwater in the colder parts of the Northern Hemisphere. Its strange, laughing call carries for great distances. Like the grebes, loo...