Quadrant may refer to:

Companies

* Quadrant Cycle Company, 1899 manufacturers in Britain of the Quadrant motorcar * Quadrant (motorcycles), one of the earliest British motorcycle manufacturers, established in Birmingham in 1901 *

Quadrant Private Equity Quadrant Private Equity (also simply known as Quadrant) is an Australian private equity investment firm based in Sydney, Australia. The company was founded as Quadrant Capital in 1996 by Chris Hadley. Quadrant hosts multiple investment funds ...

, an Australian investment firm *

Quadrant Records Quadrant Records is an independent record label in Spain. It has released several records in genres like jazz, folk rock and singer/songwriter. Groups and artists including The Incredible String Band, Mike Heron, Robin Williamson, Clive P ...

, an independent record label * Quadrant Televentures Ltd., a subsidiary of

Videocon Telecom Videocon Telecommunications Limited, formerly Videocon Mobile Services, was an Indian cellular service provider that offered GSM mobile services in India under the brand name Videocon. The company was a subsidiary of the Videocon Group, and wa ...

, India

Geography

* A quadrant or section in a city street nomenclature system, see Address (geography)#Quadrants * Quadrants of Washington, D.C.

Mathematics

Quadrant (circle) A circular sector, also known as circle sector or disk sector (symbol: ⌔), is the portion of a disk (a closed region bounded by a circle) enclosed by two radii and an arc, where the smaller area is known as the ''minor sector'' and the larger ...

, a circular sector equal to one quarter of a circle, or half a semicircle *

Quadrant (plane geometry) The axes of a two-dimensional Cartesian system divide the plane into four infinite regions, called quadrants, each bounded by two half-axes. These are often numbered from 1st to 4th and denoted by Roman numerals: I (where the signs of the (' ...

, a sector of a two-dimensional Cartesian coordinate system * Quadrant (solid geometry)

Military

* , a Second World War British/Australian warship * First

Quebec Conference, 1943 The First Quebec Conference, codenamed "Quadrant", was a highly secret military conference held during World War II by the governments of the United Kingdom, Canada, and the United States. It took place in Quebec City on August 17–24, 1943, at ...

(codenamed "QUADRANT")

Science and technology

Galactic quadrant A galactic quadrant, or quadrant of the Galaxy, is one of four circular sectors in the division of the Milky Way Galaxy. Quadrants in the galactic coordinate system In actual astronomical practice, the delineation of the galactic quadrants ...

, one out of four circular sectors in the division of the Milky Way galaxy *

Quadrant (abdomen) The human abdomen is divided into quadrants and regions by anatomists and physicians for the purposes of study, diagnosis, and treatment. The division into four quadrants allows the localisation of pain and tenderness, scars, lumps, and other ...

, a division of the abdominal cavity * Quadrant (architecture) a curve in a wall or vaulted ceiling of a building *

Quadrant (instrument) A quadrant is an instrument used to measure angles up to 90°. Different versions of this instrument could be used to calculate various readings, such as longitude, latitude, and time of day. Its earliest recorded usage was in ancient India in ...

, an angle or time measuring instrument * Quadrant (semigraphics), a 2×2 semigraphical pixel array in computing

Places

* Quadrant Bus Station, Swansea Wales * Quadrant:MK, Network Rail's headquarters campus in Milton Keynes * Quadrant Park, a nightclub in Liverpool, Merseyside * Quadrant Shopping Centre, Swansea, Wales * The Quadrant, a housing estate in Kingston upon Hull, UK

Other

* ''Quadrant'' (album), a 1977 album by Joe Pass and Milt Jackson * Quadrant (college basketball), a performance measure derived from the Rating Percentage Index * ''Quadrant'' (magazine), an Australian literary and cultural journal *

Triumph Quadrant The so-called Triumph Quadrant (aka "Quadrent") was a "bitsa" designed and built in secret by Doug Hele in 1973. It was a 1,000 cc four-cylinder motorcycle made up from Trident A trident is a three- pronged spear. It is used for spea ...

, a four-cylinder motorcycle * A division of dentition - see

Glossary of dentistry This is a list of definitions of commonly used terms of location and direction in dentistry. This set of terms provides orientation within the oral cavity, much as anatomical terms of location provide orientation throughout the body. Terms ...

{{disambiguation