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velocity

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noun ve·loc·i·ty \və-ˈlä-sə-tē, -ˈläs-tē\

Simple Definition of velocity

  • : quickness of motion

Full Definition of velocity

plural ve·loc·i·ties

  1. 1 a :  quickness of motion :  speed <the velocity of sound> b :  rapidity of movement <[my horse's] strong suit is grace & personal comeliness, rather than velocity — Mark Twain> c :  speed imparted to something <the power pitcher relies on velocity — Tony Scherman>

  2. 2 :  the rate of change of position along a straight line with respect to time :  the derivative of position with respect to time

  3. 3 a :  rate of occurrence or action :  rapidity <the velocity of historical change — R. J. Lifton> b :  rate of turnover <the velocity of money>

Examples of velocity

  1. particles moving at high velocities

  2. measuring the velocity of sound

  3. the velocity of a bullet



Origin of velocity

Middle French velocité, from Latin velocitat-, velocitas, from veloc-, velox quick; probably akin to Latin vegēre to enliven — more at wake


First Known Use: 15th century



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