Meaning of ACCELERATION in English

/ak sel'euh ray"sheuhn/ , n.

1. the act of accelerating; increase of speed or velocity.

2. a change in velocity.

3. Mech. the time rate of change of velocity with respect to magnitude or direction; the derivative of velocity with respect to time.

[ 1525-35; acceleration- (s. of acceleratio ). See ACCELERATE, -ION ]

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .