from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The act or process of decelerating.
  • n. The amount by which a speed or velocity decreases (and so a scalar quantity or a vector quantity).

from the GNU version of the Collaborative International Dictionary of English

  • n. a decrease in velocity. Opposite of acceleration

from The Century Dictionary and Cyclopedia

  • n. The decrease of velocity: opposed to acceleration.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the act of decelerating; decreasing the speed
  • n. a decrease in rate of change
  • n. (physics) a rate of decrease in velocity


Sorry, no etymologies found.



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