Definition of acceleration in English:

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Pronunciation: /əksɛləˈreɪʃ(ə)n/


[mass noun]
1A vehicle’s capacity to gain speed: the three-litre model has spectacular acceleration
More example sentences
  • The Ford exhaust system will improve your vehicle's acceleration and passing power, and at the same, help improve its fuel mileage.
  • One of the terms used in estimating the clearance time of the heavy vehicle is its average acceleration in starting gear.
  • This £50,440 model has amazing acceleration for a car of its size and engine type, as well as an impressive ride quality and surprisingly nimble handling.
speeding up, increasing speed, increase in speed, gain in momentum, gathering speed, opening up
technical rate of change of velocity
1.1Increase in speed or rate: the acceleration of the industrialization process
More example sentences
  • The revenue acceleration that powered profit gains was widespread.
  • The phenomenon flies in the face of a national trend that has seen a general slowdown in residential property price acceleration after years of spectacular growth.
  • I hope it will be the vehicle for acceleration in improvements in the railway system.
hastening, speeding up, quickening, stepping up, advancement, furthering, furtherance, forwarding, promotion, boosting, boost, stimulation, spur, aid, assistance, facilitation, easing, simplification, expedition, precipitation
increase, rise, advance, leap, surge, escalation, spiralling, worsening
1.2 Physics The rate of change of velocity per unit of time.
Example sentences
  • They needed to imagine a special motionless container in order to understand such physical concepts as velocity and acceleration.
  • Mass, instantaneous velocity, acceleration, magnetic forces, and energy puzzled them much more.
  • This will necessarily require a change in velocity - hence an acceleration.


Late 15th century: from Latin acceleratio(n-), from accelerare 'hasten' (see accelerate).

  • This comes from Latin accelerare ‘hasten’, which was formed from celer ‘quick’.

For editors and proofreaders

Line breaks: ac¦cel¦er|ation

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