Definition of acceleration noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//əkˌseləˈreɪʃn//
    ; NAmE NAmE//əkˌseləˈreɪʃn//
    Energy and physical forces
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  1. 1[uncountable, singular] acceleration (in something) an increase in how fast something happens an acceleration in the rate of economic growth
  2. 2[uncountable] the rate at which a vehicle increases speed a car with good acceleration acceleration from 0–60 mph in 11.2 seconds
  3. 3 [uncountable] (physics) the rate at which the velocity (= speed in a particular direction) of an object changes acceleration caused by gravity See related entries: Energy and physical forces
  4. Word Originlate 15th cent.: from Latin acceleratio(n-), from accelerare ‘hasten’, from ad- ‘towards’ + celer ‘swift’.Extra examples There has been a rapid acceleration in the growth of industry. This model has the best acceleration of any available sports car. an acceleration in the rate of growth the acceleration of global warming
See the Oxford Advanced American Dictionary entry: acceleration