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Look up , Quadrant, or quadrant in Wiktionary, the free dictionary.quadrants |

Not to be confused with quartile.

**Quadrant** may refer to:

Primary (geometrical) meanings:

- A sector equal to one quarter of a circle, or half a semicircle, see Circular sector
- Quadrant (plane geometry), a sector of a two-dimensional cartesian coordinate system
- Quadrant (solid geometry)
- A quadrant or section in a city street nomenclature system, see Address (geography)#Quadrants

Secondary meanings:

- Quadrant (anatomy), a division of the abdominal cavity
- Quadrant (architecture) a building which arcs in 90 degree manner
- Quadrant (astronomy), a rectangular division of the celestial sphere
- Galactic quadrant, one of four circular sectors in the division of the Milky Way galaxy
- Quadrant (instrument), an angle or time measuring instrument
- Quadrant (motorcycles), one of the earliest British motorcycle manufacturers, established in Birmingham in 1901

Proper names:

- Quadrant Cycle Company, 1899 manufacturers in Britain of the Quadrant motorcar
*Quadrant*(magazine), an Australian journal*Quadrant*(album), a 1977 album by Joe Pass and Milt Jackson

Names of places etc.

- Quadrant Bus Station, Swansea Wales
- Quadrant Shopping Centre, Swansea, Wales
- Quadrant Park, a nightclub in Liverpool, Merseyside
- Quadrant:MK, Network Rail's headquarters campus in Milton Keynes
- HMS Quadrant (G11), a Second World War British/Australian warship
- First Quebec Conference, 1943 (codenamed "QUADRANT")
- Quadrant Records, an independent record label
- Triumph Quadrant, a four-cylinder motorcycle

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