What is velocity


[ vuh-los-i-tee ]

/ vəˈlɒs ɪ ti /



rapidity of motion or operation; swiftness; speed: a high wind velocity.

Mechanics. the time rate of change of position of a body in a specified direction.

the rate of speed with which something happens; rapidity of action or reaction.

Words nearby velocity

velo binding, veloce, velocimeter, velocipede, velociraptor, velocity, velocity head, velocity microphone, velocity modulation, velocity of circulation, velocity of money

Origin of velocity

First recorded in 1540–50,velocity is from the Latin word vēlōcitās speed. See velocipede, -ty2

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for velocity

  • When a story achieves that kind of velocity, everyone wants to jump in.

    The Media's Pat-Down Frenzy|Howard Kurtz|November 22, 2010|DAILY BEAST

  • In a frog, he found the velocity to be about eighty feet a second, or less than one-thirteenth of the velocity of sound in air.

    The Catholic World; Volume I, Issues 1-6|E. Rameur

  • Falling from the neutral point, the Projectile should strike the Earth with a velocity of more than 25,000 miles an hour!

    All Around the Moon|Jules Verne

  • The velocity of a severe storm is 36 miles an hour; that of a hurricane, 80 miles an hour.

    Burroughs' Encyclopaedia of Astounding Facts and Useful Information, 1889|Barkham Burroughs

  • The principal shaft makes two hundred revolutions per minute, but the velocity of that of the pumps is but fifty revolutions.

    Scientific American Supplement, No. 415, December 15, 1883|Various

  • They are no more agreed as to its composition after it reaches us than as to its velocity.

    Fables of Infidelity and Facts of Faith|Robert Patterson

British Dictionary definitions for velocity



speed of motion, action, or operation; rapidity; swiftness

physicsa measure of the rate of motion of a body expressed as the rate of change of its position in a particular direction with time. It is measured in metres per second, miles per hour, etcSymbol: u, v, w

physics (not in technical usage) another word for speed (def. 3)

Word Origin for velocity

C16: from Latin vēlōcitās, from vēlōx swift; related to volāre to fly

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for velocity



Rapidity or speed of motion; specifically, the distance traveled per unit time.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Scientific definitions for velocity


The speed and direction of motion of a moving body. Velocity is a vector quantity. Compare accelerationspeed.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for velocity


The vector giving the speed and direction of motion of any object.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Words related to velocity

acceleration, quickness, tempo, momentum, pace, impetus, celerity, expedition, fleetness, dispatch, gait, rate, haste, headway, hurry, swiftness, rapidity