sector

Noun

• measuring instrument consisting of two graduated arms hinged at one end

• a portion of a military position

• the minimum track length that can be assigned to store information; unless otherwise specified a sector of data consists of 512 bytes

• a particular aspect of life or activity
  • he was helpless in an important sector of his life
    

• a social group that forms part of the society or the economy
  • the public sector
    

• a plane figure bounded by two radii and the included arc of a circle