velocity

noun
ve·​loc·​i·​ty | \və-ˈlä-sə-tē, -ˈlä-stē\
plural velocities

Definition of velocity 

1a : quickness of motion : speed the velocity of sound

b : rapidity of movement [my horse's] strong suit is grace & personal comeliness, rather than velocity— Mark Twain

c : speed imparted to something the power pitcher relies on velocity— Tony Scherman

2 : the rate of change of position along a straight line with respect to time : the derivative of position with respect to time

3a : rate of occurrence or action : rapidity the velocity of historical change— R. J. Lifton

b : rate of turnover the velocity of money

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Examples of velocity in a Sentence

particles moving at high velocities measuring the velocity of sound the velocity of a bullet
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Recent Examples on the Web

Increasing the speed of air increases its kinetic energy and kinetic energy is proportional the square of the velocity. Rhett Allain, WIRED, "The Physics of Launching Fireworks From a Drone," 4 July 2018 Every spring, the Isle of Man — a tiny island hanging between Ireland and Great Britain — becomes a high-velocity, all-stakes speed zone. Kyle Swenson, chicagotribune.com, "Motorcycle racing's 'most dangerous' event is underway and a rider is already dead," 1 June 2018 High-velocity jets of steam, along with sulfurous volcanic fumes and small gritty rock debris, began to blow out from the pit in May of that year. Wendell Duffield, Scientific American, "Kilauea’s Next Eruptions May Mirror a Big One in Its Past," 15 May 2018 Phrases like spin rate, launch angle and exit velocity have become common in baseball in recent years, thanks to innovations in the way teams can track the game as it’s played. Zach Osterman, Indianapolis Star, "Jeff Mercer a natural fit to take IU baseball to next level," 3 July 2018 Few people are interested in more strikeouts than base hits and launch angles and exit velocities. Nick Canepa, sandiegouniontribune.com, "Can soccer ever be in the Big Three?," 2 July 2018 The late break on his sinker is back, and the velocity on his sinker and slider are up 2 mph from last month. Eduardo A. Encina, baltimoresun.com, "As Orioles work to trade closer Zach Britton, he's showing suitors he's only getting better," 14 July 2018 While fastball velocity has been rising steadily, the frequency with which that pitch is thrown is declining, falling (according to Fangraphs) from 64.4 percent in 2002 to 55.2 percent this year. Alex Speier, BostonGlobe.com, "What’s up with all the strikeouts in Major League Baseball?," 12 July 2018 The easy crutch is to say it’s all about his diminished velocity, which has gone from 94.1 mph on his fastball in 2014 to 90.3 mph this season. Ryan Divish, The Seattle Times, "Twitter mailbag: Will Felix Hernandez pitch in the postseason if the Mariners make it? Cano to first base? And Magnum P.I.?," 9 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'velocity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of velocity

15th century, in the meaning defined at sense 1a

History and Etymology for velocity

Middle English velocite, borrowed from Anglo-French & Latin; Anglo-French veloceté, borrowed from Latin vēlōcitāt-, vēlōcitās, from vēlōc-, vēlōx "swift, rapid" (of uncertain origin) + -itāt-, -itās -ity

Note: If going back to earlier *ueg-s-l-o-, perhaps a derivative from the base of vegēre "to give vigor to, enliven" (see vegetate) or vehere "to convey" (Indo-European *u̯eǵh-; see vehicle), assimilated to the -ōk- of ātrōx, ferōx (see atrocious, ferocious). Alternatively, a derivative *uē-lo-, from the Indo-European base *h2u̯eh1- "blow" (hence, "windlike"; see wind entry 1) has been suggested.

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Statistics for velocity

Last Updated

6 Nov 2018

Look-up Popularity

Time Traveler for velocity

The first known use of velocity was in the 15th century

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More Definitions for velocity

velocity

noun

English Language Learners Definition of velocity

: quickness of motion

velocity

noun
ve·​loc·​i·​ty | \və-ˈlä-sə-tē \
plural velocities

Kids Definition of velocity

: quickness of motion : speed

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Comments on velocity

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