Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • transitive v. To decrease the velocity of.
  • transitive v. To slow down the rate of advancement of: measures intended to decelerate the arms buildup.
  • intransitive v. To decrease in velocity.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. to reduce the velocity of something
  • v. to reduce the rate of advancement of something, such as a disease
  • v. to go slower

from the GNU version of the Collaborative International Dictionary of English

  • intransitive v. to reduce speed. Opposite of accelerate.
  • transitive v. to cause to reduce speed. Opposite of accelerate.

from The Century Dictionary and Cyclopedia

  • To decrease in velocity: opposed to accelerate.

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

  • v. lose velocity; move more slowly
  • v. reduce the speed of

Etymologies

de- + (ac)celerate.
(American Heritage® Dictionary of the English Language, Fourth Edition)

Examples

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