Definition of "velocity" in 英语

noun

1. (physics) 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.

3. The rate of occurrence.

4. (economics) 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.