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# decelerate

verb (decelerate, decelerates, decelerated, decelerating); noun (deceleration)

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

## Everyday

To slow down; to go less fast. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/decelerate/#m1)

### In the lessons

In science lessons on forces and motion, friction and air resistance make objects decelerate. In maths, deceleration means speed is getting smaller over time. In everyday life, cars decelerate when the driver brakes.

### Examples

- The car decelerated as it reached the corner. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/decelerate/#x1)
- Friction makes the sledge decelerate. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/decelerate/#x2)
- The rocket decelerated before landing. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/decelerate/#x3)
- A parachute helps a skydiver decelerate. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/decelerate/#x4)
- The train decelerated into the station. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/decelerate/#x5)
- The ball decelerated as it rolled up the hill. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/D/decelerate/#x6)

### Note

Opposite: accelerate. In maths, if speed goes from 20 m/s to 10 m/s in 5 seconds, it decelerates by 2 m/s every second. «De-» means down or away.

## On Mova

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