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Definition of 'deceleration'


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

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