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# sector

noun (a sector, sectors)

«sector» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. (maths) A sector is a part of a circle between two radii and the curve, shaped like a slice of pie. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/S/sector/#m1)
2. A sector is a part or area of a place, like a part of a city. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/S/sector/#m2)
3. A sector is one part of a country's business or work, like farming or health. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/S/sector/#m3)

### In the lessons

In maths lessons: pie charts are made of sectors; a sector of a circle has an angle at the centre. In social studies: the public sector, the health sector. Phrases: «sector of a circle», «the public sector», «private sector».

### Examples

- Each sector of the pie chart shows one favourite fruit. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/S/sector/#x1)
- A quarter of a circle is a sector with an angle of 90 degrees. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/S/sector/#x2)
- The farm sector employs many people. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/S/sector/#x3)
- The soldiers patrolled their sector of the city. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/S/sector/#x4)
- The biggest sector of the chart was football. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/S/sector/#x5)
- Shade the sector between the two radii. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/S/sector/#x6)

### Note

In a pie chart, sector angle = (part ÷ total) × 360°. A sector is not the same as a segment (the part between a chord and the curve).

## On Mova

- [Trees and pragmatics of «sector» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/S/sector/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«sector» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/sector.html) on Mova free.