Definition of velocity in English:



  • 1The speed of something in a given direction.

    ‘the velocities of the emitted particles’
    • ‘His average velocity on the fastball was ninety miles per hour on the button.’
    • ‘A rain droplet's readiness to fall and its fall velocity are not controlled by the density of the droplet, but by its size.’
    • ‘In 1660, together with Borelli, Viviani measured the velocity of sound by timing the difference between the flash and the sound of a cannon.’
    • ‘Wind shear velocities have been measured to 212 knots.’
    • ‘Roller coasters are also good demonstrators of speed, velocity, and acceleration.’
    • ‘Clearly, much depends on the direction and magnitude of the velocity and of the strength of the gravitational field.’
    • ‘Similarly, if two objects are moving with the same velocity, one with twice the mass of the other also has twice the momentum.’
    • ‘The two bodies will meet at a relative velocity of 10.3 kilometers per second.’
    • ‘Anti-matter has mass and when mass moves at a high velocity, there is an overall increase in energy.’
    • ‘He noticed Venus move, he was able to determine its direction and its velocity and very importantly he was able to determine its angular diameter.’
    • ‘Calculating the angular velocity of the Earth is a deceptively easy task.’
    • ‘Accelerometers measure changes in the velocity of the object to which they are attached.’
    • ‘The further away from the center of rotation that the torque is applied the more velocity it causes.’
    • ‘In many cases, air resistance will produce a drag force which is proportional to the velocity squared.’
    • ‘However, if we can measure the distance to the Sun we can also calculate the velocity of the Earth relative to the Sun.’
    • ‘It dealt only with a specific type of motion: objects moving at a constant velocity.’
    • ‘If an object is moving in one direction without a force acting on it, then it continues to move in that direction with a constant velocity.’
    • ‘Hubble discovered that the galaxies are moving away from us with a velocity proportional to their distance.’
    • ‘Since a change in either speed OR direction means a change in velocity, the object's velocity is not constant.’
    • ‘Maximum wind velocity reaches 20-25 m/s.’
    1. 1.1(in general use) speed.
      ‘the tank shot backwards at an incredible velocity’
      • ‘The bolt left the crossbow with amazing velocity, striking the target with near-perfect accuracy.’
      • ‘Having started his corporate career with maximum velocity, Yang now runs another company called Yahoo!’
      • ‘Medical advances aside, almost every technological progress has been about velocity, about the simple process of speeding things up.’
      • ‘The film has nail-biting stunts performed at such velocity you're pinned to the back of your chair just watching.’
      • ‘But you don't have to be a dot-com executive to see how the Internet accelerates business velocity.’
      • ‘A gauss rifle is a rifle that throws an iron slug at an incredibly high velocity.’
      • ‘Scientists and inventors are unraveling new technology at incredible velocity.’
      • ‘The velocity of change in today's economy requires a steady commitment to your fundamental values.’
      speed, pace, rate, tempo, momentum, impetus
      swiftness, fast pace, swift pace, fastness, quickness, speediness, rapidity, briskness, expeditiousness, expedition, dispatch
      clip, fair old rate, fair lick, steam, nippiness
      fleetness, celerity
      View synonyms
    2. 1.2Economics The rate at which money changes hands within an economy.
      • ‘He assumed no international trade effects, an unchanged money supply and a constant velocity of circulation.’
      • ‘John Maynard Keynes challenged the theory in the 1930s, saying that increases in money supply lead to a decrease in the velocity of circulation and that real income, the flow of money to the factors of production, increased.’
      • ‘The trouble is that all these measures of money cannot be relied on because the velocity of money changes.’
      • ‘Time and money appear as commensurate albeit inverse values because of the effect of the velocity of circulation on the accumulation of capital.’
      • ‘The velocity of circulation was assumed to be unchanged.’


Late Middle English: from French vélocité or Latin velocitas, from velox, veloc- swift.