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Arbuckle Mountains

(Encyclopedia)Arbuckle Mountains ärˈbŭkəl [key], range of low, rolling hills, rising c.700 ft (210 m) above the prairie, S Okla.; remnant of mountains formed in the Precambrian. Interesting geological formation...

Lolland

(Encyclopedia)Lolland or Laaland both: lôˈlän [key], island (1992 pop. 72,536), 479 sq mi (1,241 sq km), SE Denmark, in the Baltic Sea, E of Langeland, S of Sjælland, and W of Falster. The island is low-lying a...

Timan

(Encyclopedia)Timan tyēmänˈ [key], mountain ridge, c.350 mi (560 km) long, Komi Republic, NE European Russia. The low Timan ridge divides the extensive Dvina-Pechora lowland into the E Pechora River basin and th...

pillbox

(Encyclopedia)pillbox, small, low fortification that houses machine guns and antitank weapons. Similar to a blockhouse, it is usually made of concrete, steel, logs, or filled sandbags. Pillboxes came into use durin...

anticyclone

(Encyclopedia)anticyclone, region of high atmospheric pressure; anticyclones are commonly referred to as “highs.” The pressure gradient, or change between the core of the anticyclone and its surroundings, combi...

Grimm's law

(Encyclopedia)Grimm's law, principle of relationships in Indo-European languages, first formulated by Jakob Grimm in 1822 and a continuing subject of interest and investigation to 20th-century linguists. It shows t...

Canadian Shield

(Encyclopedia)Canadian Shield or Laurentian Plateau lôrĕnˈchən [key], U-shaped region of ancient rock, the nucleus of North America, stretching N from the Great Lakes to the Arctic Ocean. Covering more than hal...

equestrianism

(Encyclopedia)equestrianism, art of riding and handling a horse. Horseback riding was practiced as far back as the Bronze Age and was thereafter adapted to commerce, industry, war, sport, and recreation. Diverse st...

Sondheim, Stephen Joshua

(Encyclopedia)Sondheim, Stephen Joshua sôndˈhīm [key], 1930–2021, American composer and lyricist, b. New York City. ...

Venturi, Robert

(Encyclopedia)Venturi, Robert, 1925–2018, American architect and architectural theorist, b. Philadelphia, grad. Princeton (B.A., 1947; M.F.A., 1950). An important and highly influential theorist, Venturi inveighe...