Meaning of ACCELERATION in English

n. 1 the process or act of accelerating or being accelerated. 2 an instance of this. 3 (of a vehicle etc.) the capacity to gain speed (the car has good acceleration). 4 Physics the rate of change of velocity measured in terms of a unit of time.

[ F accélération or L acceleratio (as ACCELERATE) ]

Concise Oxford English dictionary.      Краткий оксфордский словарь английского языка.