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Wadi Halfa

(Encyclopedia)Wadi Halfa wäˈdē hălˈfə [key], town, N Sudan, on Lake Nubia (Lake Nasser). It is the terminus of a railroad from Khartoum and is the point at which cotton, wheat, livestock, and other goods are ...

ozone

(Encyclopedia)ozone ōˈzōn [key], an allotropic form of the chemical element oxygen (see allotropy). Pure ozone is an unstable, faintly bluish gas with a characteristic fresh, penetrating odor. The gas has a dens...

pneumatic tool

(Encyclopedia)pneumatic tool no͝omătˈĭk [key], instrument activated by air pressure. Pneumatic tools are designed around three basic devices: the air cylinder, the vane motor, and the sprayer. The air cylinder ...

insulation

(Encyclopedia)insulation ĭnˌsəlāˈshən, ĭnˌsyo͝o– [key], use of materials or devices to inhibit or prevent the conduction of heat or of electricity. Common heat insulators are, fur, feathers, fiberglass, ...

Reynard the Fox

(Encyclopedia)Reynard the Fox rĕˈnərd, rāˈnärd [key], the supreme trickster and celebrated hero of the medieval beast epics, works predominantly in verse which became increasingly popular after c.1150. They a...

Bryant, Kobe

(Encyclopedia)Bryant, Kobe brīˈənt [key], 1978–2020, American basketball player, b. Philadelphia. The ...

Denali

(Encyclopedia)Denali, formerly Mount McKinley, peak, 20,310 ft (6,190 m) high, S central Alaska, in the Alaska Range; highest point in North America. Permanent snowfields cover more than half the mountain and feed ...

Devils Lake

(Encyclopedia)Devils Lake. 1 200 sq mi (520 sq km), NE central N.Dak., the largest natural body of water in the state. In an area of typically inland drainage, Devils Lake can range from a dry lakebed to more than ...

English setter

(Encyclopedia)English setter, breed of large sporting dog developed over hundreds of years in England. It stands about 25 in. (63.5 cm) high at the shoulder and weighs about 60 lb (27.2 kg). Its flat or slightly wa...

Iberians

(Encyclopedia)Iberians, ancient people of Spain. Some scholars have argued that they migrated from Africa in the Neolithic period and again at the end of the Bronze Age, while the archaeological evidence has been i...