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Velocities

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Velocity
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ve⋅loc⋅i⋅ty

  [vuh-los-i-tee]
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–noun, plural -ties.
1. rapidity of motion or operation; swiftness; speed: a high wind velocity.
2. Mechanics. the time rate of change of position of a body in a specified direction.
3. the rate of speed with which something happens; rapidity of action or reaction.
Origin:
1540–50; < L vēlōcitās speed. See velocipede, -ty 2

Synonyms:
1. See speed.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Velocity
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ve·loc·i·ty   (və-lŏs'ĭ-tē)   
n.   pl. ve·loc·i·ties

  1. Rapidity or speed of motion; swiftness.

  2. Physics A vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion.

    1. The rate of speed of action or occurrence.

    2. The rate at which money changes hands in an economy.


[Middle English velocite, from Old French, from Latin vēlōcitās, from vēlōx, vēlōc-, fast; see weg- in Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

velocity

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

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

velocity 
c.1550, from L. velocitatem (nom. velocitas) "swiftness, speed," from velox (gen. velocis) "swift," of uncertain origin, perhaps related to vehere "carry" (see vehicle), or from the same root as vegetable (see vigil).
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

velocity ve·loc·i·ty (və-lŏs'ĭ-tē)
n.
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.
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