# sector

> English word · Noun · IPA /ˈsɛk.təɹ/ · frequency rank #2,229

## Definitions
1. A section.
2. In the schedule for an aircraft and its crew, the period starting with preparation of the plane before loading at one airport and ending with deplaning at the next.
3. A zone; a designated area.
4. A zone; a designated area.
5. A zone; a designated area.
6. A zone; a designated area.
7. Part of a circle, extending to the center; circular sector.
8. A portion of a sphere or ball defined by a conical boundary with apex at the center of the sphere.
9. A fixed-sized unit (traditionally 512 bytes) of sequential data stored on a track of a digital medium.
10. An instrument consisting of two rulers of equal length joined by a hinge.
11. A field of economic activity.
12. A toothed gear whose face is the arc of a circle.
13. A fixed, continuous section of the track, such that sectors do not overlap but all sectors make up the whole track.
14. An area of a crag, consisting of various routes

## Etymology
Borrowed from Latin sector.

## Easily confused with
- **sects** (https://plainspell.com/en/vs/sector-vs-sects)
- **seton** (https://plainspell.com/en/vs/sector-vs-seton)
- **señor** (https://plainspell.com/en/vs/sector-vs-senor)
- **senior** (https://plainspell.com/en/vs/sector-vs-senior)
- **sensor** (https://plainspell.com/en/vs/sector-vs-sensor)
- **sexton** (https://plainspell.com/en/vs/sector-vs-sexton)
- **setter** (https://plainspell.com/en/vs/sector-vs-setter)
- **suitor** (https://plainspell.com/en/vs/sector-vs-suitor)
- **stator** (https://plainspell.com/en/vs/sector-vs-stator)
- **senator** (https://plainspell.com/en/vs/sector-vs-senator)
- **specter** (https://plainspell.com/en/vs/sector-vs-specter)
- **Spector** (https://plainspell.com/en/vs/sector-vs-spector)
- **selector** (https://plainspell.com/en/vs/sector-vs-selector)
- **sectoral** (https://plainspell.com/en/vs/sector-vs-sectoral)
- **sect** (https://plainspell.com/en/vs/sect-vs-sector)
- **seater** (https://plainspell.com/en/vs/seater-vs-sector)
- **Seaton** (https://plainspell.com/en/vs/seaton-vs-sector)
- **section** (https://plainspell.com/en/vs/section-vs-sector)

## Common misspellings (9)
`esctor`, `scetor`, `secctor`, `secotr`, `sectorr`, `sectro`, `secttor`, `setcor`, `ssector`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/sector