vel.

Noun

velocity (countable and uncountable, plural velocities)

1. A vector quantity that denotes the rate of change of position with respect to time, combining speed with a directional component.
   • A car racing in a circle may retain the same speed while continually changing its velocity.
2. A rapidity of motion.
   • The train was travelling at a slower velocity than usual.

   Synonyms:

   speed

3. The rate of occurrence.
4. The number of times that an average unit of currency is spent during a specific period of time.
5. (music hardware and software) The value corresponding to how hard a key is struck on a MIDI controller or keyboard.