Definition of velocity noun from the Oxford Advanced Learner's Dictionary

     

    velocity

     noun
    noun
    BrE BrE//ˈlɒsəti//
     
    ; NAmE NAmE//ˈlɑːsəti//
     
    [uncountable, countable](pl. velocities) Energy and physical forces
     
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  1. 1(specialist) the speed of something in a particular direction the velocity of light to gain/lose velocity a high-velocity rifle See related entries: Energy and physical forces
  2. 2(formal) high speed Jaguars can move with an astonishing velocity.
  3. Word Origin late Middle English: from French vélocité or Latin velocitas, from velox, veloc- ‘swift’.Extra examples Light travels at a constant velocity. to move with a uniform velocity to gain/​lose velocity
See the Oxford Advanced American Dictionary entry: velocity