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decelerator

decelerator

6.5
A device that slows movement or reduces speed
  • noun
  • /dɪˈsɛləˌreɪtər/
  • Specialized
translation icon : desacelerador
  • CERN's Antiproton Decelerator (AD) facility, created largely to support antihydrogen research (see PHYSICS TODAY, October 2000, page 22), supplies antiprotons traveling at about one-tenth the speed of light.

Examples

  • The car's decelerator helped reduce its speed safely before entering the sharp turn.

  • For better control, the bicycle is equipped with a decelerator that allows the rider to slow down smoothly.

  • The spaceship's decelerator engaged, gradually decreasing its speed as it approached the space station.

Synonyms

reduction gear
vsdecelerator
  • Specialized
1 5.3

A group of gears that makes a fast shaft turn more slowly and gives more turning power to the output

slows movement generally rather than acting by gearing
braker
vsdecelerator
1 6.8

A person or device that applies a brake when a vehicle must stop

refers to devices that reduce speed in many settings rather than braking
retarder
vsdecelerator
  • Specialized
7.6

Something that slows a movement or a process

is limited to devices that reduce movement or speed
arrestor
vsdecelerator
  • Specialized
6.1

A device that stops or slows moving parts to keep people safe

reduces speed broadly not only for safety reasons
arrester
vsdecelerator
  • Specialized
6.5

A device that stops movement or limits flow in machines and electrical systems

applies to devices that slow motion generally not just limit flow

How Strong

parachute
119 2.0
airbrake
  • Specialized
5.5
decelerator
  • Specialized
6.5
governor
  • Specialized
11 7.4
speed bump
7 2.5

Surface Forms

decelerator singular
decelerators plural

Morphology

decelerator = decelerate (transparent) = de + celer + ate + or

The noun is a regular instrument noun formed from the verb 'decelerate' and directly means something that decelerates.

Etymology

Decelerator comes from the parts de- meaning 'down' and celer meaning 'fast'. So a decelerator is a device that pushes speed 'down' and slows movement, the opposite of a car's accelerator.