deceleration meaning and definition

DECELERATION noun

Definition of deceleration (noun)

1. a decrease in rate of change
   • "the deceleration of the arms race"
   • synonyms: retardation, slowing
   • antonym: acceleration
2. (physics) a rate of decrease in velocity
   • antonym: acceleration
3. the act of decelerating; decreasing the speed
   • "he initiated deceleration by braking"
   • antonym: acceleration