sector

noun

1. 1

   Section

2. 2

   Zone (designated area).

3. 3

   Part of a circle, extending to the center

4. 4

   Fixed-sized unit (traditionally 512 bytes) of sequential data stored on a track of a digital medium (compare to block)

5. 5

   An area designated by boundaries within which a unit operates, and for which it is responsible

6. 6

   One of the subdivisions of a coastal frontier

7. 7

   A fictional region of space designated for navigational or governance purposes.

8. 8

   (calculation) an instrument consisting of two rulers of equal length joined by a hinge.

9. 9

   A field of economic activity

   “public sector;  private sector”

10. 10

    A toothed gear whose face is the arc of a circle.

11. 11

    A fixed, continuous section of the track, such that sectors do not overlap but all sectors make up the whole track.