Sector

Look up sector, sectoral, sectorally, or sectors in Wiktionary, the free dictionary.

Sector may refer to:

Places

• Sector, West Virginia, an unincorporated community in Hampshire County, West Virginia, United States of America

Fiction

• Sector (Star Trek), a fictional area of space-designation in the Star Trek universe
  • Sector, a fictional area of space; for example in the Foundation series, Star Wars, StarCraft, Warhammer 40,000, Lollipop Chainsaw
• Sector General, a series of books about an interstellar hospital in Space, written by James White
• Sector Admiral, a fictitious military rank in numerous science fiction sources

Geometry

• Circular sector, the portion of a disc enclosed by two radii and a circular arc
• Hyperbolic sector, a region enclosed by two radii and a hyperbolic arc
• Spherical sector, a portion of a sphere enclosed by a cone of radii from the center of the sphere
• Sector of θ, an historic name for the mathematical notation cis(θ) = cos(θ) + i sin(θ)

Computing

• 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

Other uses

• Sector (economic), a subdivision in an economic system
• Sector (instrument), a calculating instrument
• Sector instrument, a class of mass spectrometer
• United States Coast Guard Sectors, a shore-based operational unit of the United States Coast Guard
• Sector, a three-dimensional zone within controlled airspace in which aircraft are under the control of a specific air traffic controller
• Sector No Limits, an Italian watch company

See also

• Sector light, a man-made pilotage and position fixing aid
• Sector antenna, a type of directional microwave antenna
• Zone (disambiguation)
• Region, 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