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air traffic control

(Encyclopedia)air traffic control, the system by which airplanes are safely routed into and out of major airports. Air traffic control in the United States is centered in a number of regional control centers that r...

Falluja, Al

(Encyclopedia)Falluja, Al äl fälo͞oˈjə [key], town, Anbar prov., central Iraq, on the Euphrates. A strategic city ...

Tula , city, Russia

(Encyclopedia)Tula to͞oˈlə [key], city (1991 pop. 545,000), capital of Tula region, N central European Russia, on the Upa River, a tributary of the Oka. It is an important rail and highway hub and a manufacturin...

Ottawa, river, Canada

(Encyclopedia)Ottawa, river, c.700 mi (1,130 km) long, largest tributary of the St. Lawrence River, Canada. It rises in the Laurentian Highlands, SW Que., and flows generally W through La Vérendrye Provincial Park...

Hodeida

(Encyclopedia)Hodeida äl ho͞odāˈdä [key], city, W Yemen, on the Red Sea. An important port, it exported ...

Juchitán

(Encyclopedia)Juchitán ᵺā särägōˈsä [key], town (1990 pop. 53,666), Oaxaca state, S Mexico. Located on the Juchitán River in a vast expanse of flat, fertile plain only slightly above sea level, the old to...

Sihanoukville

(Encyclopedia)Sihanoukville kämˈpôngˈ sôm [key], city and seaport (1994 est. pop. 75,000), Sihanoukville prov., S Cambodia, on the Gulf of Thailand. Although a new city (completed 1960 and named in honor of No...

Shenandoah National Park

(Encyclopedia)Shenandoah National Park, 198,081 acres (80,195 hectares), N Va., extending 80 mi (129 km) along the crest of the Blue Ridge. Authorized in 1926, it was fully established as a national park in 1935. S...

diner

(Encyclopedia)diner, restaurant resembling the railroad dining car. In the mid-19th cent., the first dining cars that appeared on trains were nothing more than an empty car with a fastened-down table. George M. Pul...

Uspallata Pass

(Encyclopedia)Uspallata Pass o͞ospäyäˈtä [key], c.12,500 ft (3,810 m) high, over the Andes between Mendoza, Argentina, and Santiago, Chile. A trail—and later a rough road—for men and pack animals was used ...