IPA: /vɪˈlɛsɪti/
KK: /vɪˈlɑsɪti/
The speed at which something moves or happens.
The velocity of the car increased as it went downhill.
Velocity → It is formed from "velocitas" (from Latin, meaning swiftness or speed) and the suffix "-ity" (meaning the state or quality of). The word "velocity" refers to the state of being swift or the quality of speed.
Think of 'swiftness' ('velocitas') to remember that 'velocity' means the quality of being fast.