volt

1 of 2

noun (1)

ˈvōlt 

: the practical meter-kilogram-second unit of electrical potential difference and electromotive force equal to the difference of potential between two points in a conducting wire carrying a constant current of one ampere when the power dissipated between these two points is equal to one watt and equivalent to the potential difference across a resistance of one ohm when one ampere is flowing through it

volt

2 of 2

noun (2)

ˈvōlt  ˈvȯlt 

1

: a leaping movement in fencing to avoid a thrust

2

a

: a tread or gait in which a horse going sideways makes a turn around a center

b

: a circle traced by a horse in this movement

Examples of volt in a Sentence

Recent Examples on the Web

Noun

Even though hybrids and EVs are powered differently than gas cars, their 12-volt accessory batteries can still go flat. —Melanie Marshall, San Diego Union-Tribune, 10 Sep. 2025

Porsche uses the 400-volt system to power an electro-hydraulic chassis system. —Mark Ewing, Forbes.com, 7 Sep. 2025

The bed does feature two standard 120-volt electrical outlets, so don't try replicating this bed setup at home without serious research and caution. —Charles Singh, USA Today, 28 Aug. 2025

Their decay energies go from a few kiloelectron volts (for tritium, or hydrogen-3) to a few megaelectron volts (for yttrium-90). —IEEE Spectrum, 25 Aug. 2025

Word History

Etymology

Noun (1)

Alessandro Volta

Noun (2)

borrowed from French volte, borrowed from Italian volta "turn," noun derivative of voltare "to turn," going back to Vulgar Latin *volvitāre, frequentative of Latin volvere "to set in a circular course, cause to roll, bring round" — more at wallow entry 1

First Known Use

Noun (1)

1873, in the meaning defined above

Noun (2)

1688, in the meaning defined at sense 1

Phrases Containing volt

• electron volt
• volt-ampere

Rhymes for volt

• bolt
• boult
• colt
• jolt
• molt
• moult
• poult
• smolt
• volte
• kilovolt
• landolt
• raoult

Kids Definition

volt

noun

ˈvōlt

: a unit of electrical potential difference and electromotive force equal to the difference in potential between two points in a conducting wire carrying a constant current of one ampere when the power used between these two points is equal to one watt

Medical Definition

volt

noun

ˈvōlt 

1

: the practical mks unit of electrical potential difference and electromotive force equal to the difference of potential between two points in a conducting wire carrying a constant current of one ampere when the power dissipated between these two points is equal to one watt and equivalent to the potential difference across a resistance of one ohm when one ampere is flowing through it

2

: a unit of electrical potential difference and electromotive force equal to 1.00034 volts and formerly taken as the standard in the United States