FromMiddle Frenchvélocité, fromLatinvēlōcitās(“speed”), fromvēlōx(“fast”), thus adoublet ofveloce.
velocity (countable anduncountable,pluralvelocities)
- (physics) Avectorquantity that denotes the rate of change ofposition with respect to time, combiningspeed with a directional component.
A car racing in a circle may retain the same speed while continually changing itsvelocity.
2004, Roger Barry, Richard Chorley, Roger G. Barry,Atmosphere, Weather and Climate, page118:Usually, however, confluence is associated with an increase in airvelocity and diffluence with a decrease. In the intermediate case, confluence is balanced by an increase in windvelocity and diffluence by a decrease invelocity.
2015, Robert A. Fesen, Dan Milisavljevic, “An HST Survey of the Highest-Velocity Ejecta in Cassiopeia A”, inarXiv[1]:Such angular distances imply undecelerated ejecta knot transversevelocities of 15,600 and 12,700 km/s respectively, assuming an explosion date ~1670 AD and a distance of 3.4 kpc.
2016 February 1, Tom Whipple, “Microcannon firing nanobullets: the future of targeted medicine”, inThe Times[2]:When an ultrasonic beam is fired at the microcannons, the emulsion evaporates, expanding rapidly into gas. This creates enough force to push the nanobullets out atvelocities reaching several metres per second.
2024 August 21, Ashley Strickland, “An unusual object is moving so fast it could escape the Milky Way. Scientists aren’t certain what it is”, inCNN[3]:By combining the data from multiple telescopes, astronomers determined the star’s position andvelocity in space, allowing them to predict that it will exit the Milky Way at some point.
- Arapidity ofmotion.
- Synonyms:seeThesaurus:speed
The train was travelling at a slowervelocity than usual.
1997,Thomas Pynchon, chapter 39, inMason & Dixon, 1st US edition, New York:Henry Holt and Company,→ISBN, part Two: America,page395:Over the winter-solid Roads, goes a great seething,— of mounted younger Gentlemen riding together by the dozens upon rented horses, Express Messengers in love with pureVelocity, Disgruntl'd Suitors with Pistols stuff'd in their Spatterdashes, seal'd Waggons not even a western Black-Boy would think of detaining.
- The rate of occurrence.
- (economics) The number of times that an average unit ofcurrency is spent during a specific period of time.
- (music hardware and software) The value corresponding to howhard a key is struck on aMIDI controller orkeyboard.
- (rapidity of motion; rate of occurrence):speed
Translations to be checked
