Quadrant

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
• Quadrant (dentistry), a division of the dentition in humans and other species
• 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