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Definition of "speed" []

  • Physics The rate or a measure of the rate of motion, especially: (noun)
  • Physics Distance traveled divided by the time of travel. (noun)
  • Physics The limit of this quotient as the time of travel becomes vanishingly small; the first derivative of distance with respect to time. (noun)
  • Physics The magnitude of a velocity. (noun)
  • Swiftness of action. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "speed" in a sentence
  • "How to speed up and decrease speed: the zoom up/down the viewer (press the "Ctrl+Alt+middle mouse"),"
  • "Now long track speed skating kencook @walidmrealtor he was definitely * speed* skating!"
  • "The reduction in speed is likely due to the reduction in commuting drivers, and of course, a reduction in collisions would follow from any reduction in traffic."