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sulfuric acid

(Encyclopedia)sulfuric acid, chemical compound, H2SO4, colorless, odorless, extremely corrosive, oily liquid. It is sometimes called oil of vitriol. Although sulfuric acid is now one of the most widely used c...

Pyrenees

(Encyclopedia)Pyrenees pĭrˈənēz [key], Span. Pirineos, Fr. Pyrénées, mountain chain of SW Europe, 21,380 sq mi (55,374 sq km), between France and Spain, a formidable barrier between the Iberian Peninsula and ...

Inner Mongolian Autonomous Region

(Encyclopedia)Inner Mongolian Autonomous Region, Mandarin Nei Monggol zizhiqu, autonomous region, c.455,000 sq mi (1,178,755 sq km), NE China. It is bounded on the no...

gold

(Encyclopedia)gold, metallic chemical element; symbol Au [Lat. aurum=shining dawn]; at. no. 79; at. wt. 196.96657; m.p. 1,064.43℃; b.p. 2,808℃; sp. gr. 19.32 at 20℃; valence +1 or +3. Gold is very ductile and...

Andalusia, region, Spain

(Encyclopedia)Andalusia änˌdälo͞othēˈä [key], autonomous community, 33,821 sq mi (87,596 sq km), S Spain, on the Mediterranean Sea, the Strait of Gibraltar, and the Atlantic Ocea...

Miami, cities, United States

(Encyclopedia)Miami mīămˈē, –ə [key]. 1 City (1990 pop. 358,548), seat of Dade co., SE Fla., on Biscayne Bay at the mouth of the Miami River; inc. 1896. The region of Greater Miami encompasses all of Dade co...

New South Wales

(Encyclopedia)New South Wales, state (2016 pop. 7,480,228), 309,443 sq mi (801,457 sq km), SE Australia. It is bounded on the E by the Pacific Ocean. Sydney is the capital. The other principal urban centers are New...

Urals

(Encyclopedia)Urals or Ural Mountains, E European Russia and NW Kazakhstan, forming, together with the Ural River, the traditional boundary between Europe and Asia and separating the Russian plain from the W Siberi...

Svalbard

(Encyclopedia)Svalbard svälˈbärd [key], archipelago (23,958 sq mi/62,051 sq km), island group (2015 est. pop. 2,700), possession of Norway, located in the Arctic Ocean, c.400 mi (640 km) N of the Norwegian mainl...

symbol

(Encyclopedia)symbol, sign representing something that has an independent existence. The most important use of symbols is in language. To say so, however, does not solve the perennial philosophical questions as to ...