center, in politics, a party following a middle course. The term was first used in France in 1789, when the moderates of the National Assembly sat in the center of the hall. It can refer to a separate party in a political system, e.g., the Catholic Center party of imperial and Weimar Germany, or to the middle group of a party consisting of several ideological factions.

Grouping of municipal facilities in a limited precinct often adjacent to the central business district of a city. The civic center is based on both the Greek acropolis and the Roman forum. The plan includes the city hall and adjoining park or plaza, headquarters for city departments, courthouses, and often a post office, public-utility offices, public health facilities, and government offices.

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Complex formerly consisting of seven buildings around a central plaza, near the southern tip of Manhattan. Its huge twin towers (completed 1970–72) were designed by Minoru Yamasaki (1912–86). At 1,368 ft (417 m) and 1,362 ft (415 m) tall, they were the world's tallest buildings until surpassed in 1973 by the Sears Tower in Chicago. The towers were notable for the relationship of their simple, light embellishment to their underlying structure. In 1993 a bomb planted by terrorists exploded in the underground garage, killing several people and injuring some 1,000. A much more massive attack occurred on Sept. 11, 2001, when first One World Trade Center and then Two World Trade Center were struck by hijacked commercial airliners that were deliberately flown into them. Shortly thereafter both of the heavily damaged towers, as well as adjacent buildings, collapsed into enormous piles of debris. The attacks claimed the lives of some 2,750 people. Thousands more were injured. See September 11 attacks.

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Complex of 14 limestone skyscrapers set amid a series of outdoor spaces on a 12-acre (5-hectare) site, built between 1929 and 1940 in midtown Manhattan. It was designed by a team of architects headed by Henry Hofmeister, H. W. Corbett, Raymond Hood, and Wallace K. Harrison. Wood veneering, mural painting, mosaics, sculpture, metalwork, and other allied arts were integrated with the architecture. Radio City Music Hall (1932) is noted for its Art Deco interior.

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Center or centre (see American and British English spelling differences) may refer to:

Science

• Center (algebra), uses of "center" in algebra
• Center of gravity (military)
• Center (group theory), in abstract algebra, the subgroup consisting of those elements which commute with all other elements
• Center of mass
• Center of symmetry, in geometry, a point that is well-distant from the boundary of a figure
• Geometric center
• Centre (geometry), the middle of an object
• Graph center, the vertices in a graph that minimize the maximal distance from all other vertices

Sports

• Center (American football), a position in American and Canadian football
• Centre Back, a position in Association football
• Center (basketball), a position in basketball
• Centre forward (also known as Striker), a position in Association football and Water Polo
• Centre (ice hockey), a position in ice hockey
• Centre (rugby league), a position in rugby league
• Centre (rugby union), a position in rugby union
• Center fielder, often called "center", a position in baseball

Places

Note that spelling differences for toponyms are not acceptable in both American and British usages, unless the place name is translated from a language not written with the Latin alphabet, or there is an unambiguous local usage pronounced very differently between American English and British English.Place names that must be spelled only as Center:

• Center, Celje, Slovenia, a neighbourhood
• Center, Maribor, Slovenia, a district
• Center, Colorado, United States, a city
• Center, Indiana, United States, a town
• Center, Jay County, Indiana, United States
• Center, Kentucky, United States, a town
• Center, Missouri, United States, a city
• Center, Nebraska, United States, a city
• Center, North Dakota, United States, a city
• Center, Outagamie County, Wisconsin, United States, a city
• Center, Portland, Oregon, United States, a neighborhood
• Center, Rock County, Wisconsin, United States, a city
• Center, Texas, United States, a city
• Center Township (disambiguation)
• Center, WashingtonPlace names that must be spelled only as Centre:
• Centre, Alabama, United States, a city
• Centre (region), an administrative region in France
• Centre, Haiti, an administrative region
• Centre Province, Cameroon
• Centre Region, Burkina Faso

Arts

• Tonic (music), in tonal music, the central or most important pitch
• Center (music band), a famous Russian-speaking band

Education

• Centre College, a liberal arts college in Danville, Kentucky, United States

Other

• Area Control Center, an Air Traffic Control facility covering a large region of airspace not associated with a particular airport
• Central
• Centre Party
• The Center, a paranormal organization in the Martin Mystery series
• Centers (Fourth Way), a human biological, psychological and spiritual nexus of energy process, equivalent to the concept of a Chakra
• Lathe center, used in machining operations
• Political center, the middle ground between the left wing and the right wing