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Sector may refer to:




  • Circular sector, also known as a "pie piece", the portion of a circle enclosed by two radii and an arc
  • Spherical sector, portion of a sphere enclosed by a cone of radii from the center of the sphere
  • Hyperbolic sector, is a region of the Cartesian plane bounded by rays from the origin to two points (a, 1/a) and (b, 1/b) and by the hyperbola xy = 1

Computing and electronics[edit]

  • Cylinder-head-sector (or "CHS"), an early method for giving addresses to each physical block of data on a hard drive
  • Disk sector, a physical subdivision of space on a computer disk-storage medium, specifically a subdivision of a "track"
  • Convex polygonal segment of map-space used in portal rendering to facilitate calculation of the visibility of objects in a computer display
  • Sector antenna, a type of directional microwave antenna used for cell phone base-station sites

Other uses[edit]

See also[edit]

  • Zone (disambiguation)
  • Region, most commonly a term used in terrestrial sciences and astrophysics
  • Area, a quantity that expresses the extent of a two-dimensional surface or shape, or planar lamina, in the plane