deceleration
1. a decrease in rate of change (Freq. 2) - the deceleration of the arms race • Syn: slowing, retardation • Ant: acceleration • Derivationally related forms: retard (for: retardation), slow (for: slowing), decelerate • Hypernyms: change, alteration, modification 2. (physics) a rate of decrease in velocity • Ant: acceleration • Topics: physics, natural philosophy • Hypernyms: rate 3. the act of decelerating; decreasing the speed - he initiated deceleration by braking • Ant: acceleration • Hypernyms: speed, speeding, hurrying
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