Velocity
来自Big Physics
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late Middle English: from French vélocité or Latin velocitas, from velox, veloc- ‘swift’.
wiktionary
veloce + -ity, from Middle French vélocité, from Latin vēlōcitās(“speed”), from vēlōx(“fast”).
etymonline
velocity (n.)
early 15c., from Latin velocitatem (nominative velocitas) "swiftness, speed," from velox (genitive velocis) "swift, speedy, rapid, quick," of uncertain origin, perhaps related to vehere "carry" (from PIE root *wegh- "to go, move, transport in a vehicle"), or from PIE *weg-slo-, suffixed form of root *weg- "to be strong, be lively."
