1. an increase in rate of change

- modern science caused an acceleration of cultural change

Definition categories: attribute, alteration, change, modification

2. the act of accelerating; increasing the speed

Similar word(s): quickening, speedup

Definition categories: act, hurrying, speed, speeding

3. (physics) a rate of increase of velocity

Definition categories: time, rate

Sentences with acceleration as a noun:

- a falling body moves toward the earth with an acceleration of velocity

- The boosters produce an acceleration of 20 metres per second per second.