sec·tor 
(sĕktər, -tôr′)
(sĕktər, -tôr′)n.
1. A part or division, as of a city or a national economy: the manufacturing sector.
2. Mathematics
a. The portion of a circle bounded by two radii and the included arc.
b. A measuring instrument consisting of two graduated arms hinged together at one end.
3. Computers A portion of a storage device making up the smallest addressable unit of information.
4.
a. A division of a defensive position for which one military unit is responsible.
b. A division of an offensive military position.
tr.v. sec·tored, sec·tor·ing, sec·tors
To divide (something) into sectors.
[Late Latin, from Latin, cutter, from sectus, past participle of secāre, to cut; see sek- in the Appendix of Indo-European roots.]
sec·tori·al (-tôrē-əl) adj.
sector- attestation
- attester
- attestor
- Att. Gen.
- at that
- at the dot
- at the double
- at the drop of a hat
- at the drop of a hat
- at the end of one's rope
- at the end of (one's) rope/tether
- at the end of one's tether
- at the end of rope
- at the end of tether
- at the end of the day
- at thehand
- at thehand/handsof
- at the latest
- at the mercy of
- at (the) most
- at the most
- at the ready
- at the same time
- at the top of lungs
- at the top of (one's) lungs