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English definition of “acceleration”

acceleration

noun [U]  /ɪkˌsel·əˈreɪ·ʃən, æk-/ us  

acceleration noun [U] (INCREASE RATE)

physics the rate of change in the speed of something over time

acceleration noun [U] (GO FASTER)

the rate at which something moves more quickly or happens faster or sooner: The car has good acceleration.
(Definition of acceleration from the Cambridge Academic Content Dictionary © Cambridge University Press)
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