Pronunciation

change

Singular
velocity

Plural
velocities

  1. (countable & uncountable) Something's velocity is how fast it is moving.
    The bullet comes out of a gun at a high velocity.
  2. (countable & uncountable) In physics, velocity is how fast something is moving in a particular direction.
    The velocity of the car was 10 metres per second to the north-east when it hit the tree.