volt

1 [vohlt]
noun Electricity.
the standard unit of potential difference and electromotive force in the International System of Units (SI), formally defined to be the difference of electric potential between two points of a conductor carrying a constant current of one ampere, when the power dissipated between these points is equal to one watt. Abbreviation: V

Origin:
1870–75; named after A. Volta

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volt

2 [vohlt]
noun
1.
Manège.
a.
a circular or turning movement of a horse.
b.
a gait in which a horse going sideways turns around a center, with the head turned outward.
2.
Fencing. a sudden movement or leap to avoid a thrust.

Origin:
1650–60; < French volte < Italian volta, noun derivative of voltare to turn < Vulgar Latin *volvitare, frequentative of Latin volvere to turn; see vault2

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
volt1 (vəʊlt)
 
n
V the derived SI unit of electric potential; the potential difference between two points on a conductor carrying a current of 1 ampere, when the power dissipated between these points is 1 watt
 
[C19: named after Count Alessandro Volta2]

volt or volte2 (vɒlt)
 
n
1.  a small circle of determined size executed in dressage
2.  a leap made in fencing to avoid an opponent's thrust
 
[C17: from French volte, from Italian volta a turn, ultimately from Latin volvere to turn]
 
volte or volte2
 
n
 
[C17: from French volte, from Italian volta a turn, ultimately from Latin volvere to turn]

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Etymonline
Word Origin & History

volt
unit of electromotive force, 1873, back-formation from adj. voltaic (1813), designating electricity produced by chemical action, formed in allusion to It. physicist Alessandro Volta (1745-1827), who perfected a chemical process used in electrical batteries.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

volt (vōlt)
n.
Abbr. V
A unit of electromotive force in the Internation System of Units that will produce a current of 1 ampere in a circuit that has resistance of 1 ohm.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
volt   (vōlt)  Pronunciation Key 
The SI derived unit used to measure electric potential at a given point, usually a point in an electric circuit. A voltage difference of one volt drives one ampere of current through a conductor that has a resistance of one ohm. One joule of work is required to move an electric charge of one coulomb across a potential difference of one volt. One volt is equivalent to one joule per coulomb. See also Ohm's law.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Cultural Dictionary
volt [(vohlt)]

The unit of electromotive force, the volt measures how much “pressure” there is in an electric circuit. The higher the voltage, the more electrical current will flow in the circuit.

Note: Ordinary household outlets are usually rated at 115 volts, car batteries at 12 volts, and flashlight batteries at 1.5 volts.
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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Example sentences
It may be all bits and volts, but it's not other-worldly.
Several million volts coursed through our wiring and blew out nearly every
  electrical appliance that was plugged in.
Each bolt can contain up to one billion volts of electricity.
For energies over a million electron volts, nuclei are decomposed, but the
  protons and neutrons are elementary.
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