Noun: deceleration dee,se-lu'rey-shun
- The act of decelerating; decreasing the speed
"he initiated deceleration by braking"
- A decrease in rate of change
"the deceleration of the arms race";
- slowing, retardation
- (physics) a rate of decrease in velocity
"The sudden deceleration caused the items to shift forward"
Derived forms: decelerations
Type of: alteration, change, hurrying, modification, rate, speed, speeding
Antonym: acceleration
Encyclopedia: Deceleration