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English definition of “acceleration”

acceleration

noun     /əkˌsel.əˈreɪ.ʃən/
[U] the increase in something's speed , or its ability to go faster : An older car will have poor acceleration. High winds significantly hampered the plane's acceleration.Increasing and decreasing speed of motion [S or U] the increase in the speed at which something happens : The acceleration in the decline of manufacturing industry began several years ago.Hurrying and doing things quicklyBusy and active
(Definition of acceleration noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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