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velocity

/vəˈlɒsəti/ noun

In Latin: vēlōcitās Wiktionary

noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about velocity at Wordnik → Where our words come from →

  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.
  3. The rate of occurrence.

Origin

From Middle French vélocité, from Latin vēlōcitās (“speed”), from vēlōx (“fast”), thus a doublet of veloce.

From Wiktionary, via Kaikki.org (CC BY-SA)