sector

noun

1. 1

   measuring instrument consisting of two graduated arms hinged at one end

2. 2

   a particular aspect of life or activity

   he was helpless in an important sector of his life

3. 3

   a social group that forms part of the society or the economy

   the public sector

4. 4

   a portion of a military position

5. 5

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

6. 6

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