1. A distinct part or subdivision, especially of society or the economy
   "the public sector"; "the retail sector"
    
2. A particular aspect of life or activity
   "he was helpless in an important sector of his life";
   - sphere
    
3. (military) a portion of a military position
   "The commander assigned each platoon to defend a specific sector of the perimeter"
    
4. A plane figure bounded by two radii and the included arc of a circle
   "The pie was cut into six equal sectors"
    
5. (computing) a section of a disk drive or memory
   "The hard drive had a sector size of 4096 bytes"
    
6. Measuring instrument consisting of two graduated arms hinged at one end
   "The surveyor used a sector to measure angles in the field"

Derived forms: sectors

Type of: aspect, computer memory unit, facet, measuring device, measuring instrument, measuring system, parcel, parcel of land, piece of ground, piece of land, plane figure, social group, tract, two-dimensional figure

Part of: allocation unit, battlefield, battleground, block, economic system, economy, field, field of battle, field of honor [US], society

Encyclopedia: Sector, West Virginia