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voltage

American  
[vohl-tij] / ˈvoʊl tɪdʒ /

noun

Electricity.
  • voltages
    plural
  1. electromotive force or potential difference expressed in volts.


voltage British  
/ ˈvəʊltɪdʒ /

noun

  1. an electromotive force or potential difference expressed in volts

"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

voltage Scientific  
/ vōl′tĭj /
  1. A measure of the difference in electric potential between two points in space, a material, or an electric circuit, expressed in volts.


Other Word Forms

Noun Inflected Forms

Etymology

Origin of voltage

First recorded in 1885–90; volt 1 + -age

Explanation

Voltage is a measure of electrical energy. If you've got a high-voltage personality, people may use another electrical metaphor and describe you as "a live wire." Someone calculates voltage by determining the difference in electrical charge between two points in a circuit. When you travel, you'll want to make sure you bring along adapters to plug into the various sorts of electrical outlets you'll encounter around the world. Your chargers and all your electrical gear should have dual voltage capability, so they can work on electrical currents of 100 volts to 240 volts.

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Vocabulary lists containing voltage

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

This creates a voltage that researchers can measure.

From Science Daily ● Sep. 3, 2026

This mismatch has prevented conventional stainless steel from being used effectively in some high voltage electrochemical applications.

From Science Daily ● Aug. 11, 2026

Utility company Consolidated Edison has detected stray voltage at the site weeks after the death, a possible cause for the horse’s sudden flight.

From The Wall Street Journal ● Aug. 3, 2026

The shorter the voltage has to travel, the faster and more efficient the charge can be, he adds.

From The Wall Street Journal ● Jul. 13, 2026

It's a 40 amp-hour Ag-Zn battery with an optimal voltage of 1.5.

From "The Martian" by Andy Weir

BelGaN, based in Belgium, specialized in making gallium nitride semiconductors, which allow for higher voltages compared with silicon-based chips.

From The Wall Street Journal ● Sep. 7, 2026

Solid-state transformers convert power to different voltages, and go largely unnoticed, attached to telephone poles everywhere.

From Barron's ● Jun. 5, 2026

Thanks to electroencephalography, researchers can even link slow-wave sleep to a process of synchronous changes in electrical voltages in thousands of neurons, known as up and down states.

From Salon ● Dec. 17, 2024

Their experiments measured the voltages on the surface of each metallic lump - essentially the strength of the electric current.

From BBC ● Jul. 22, 2024

The tragedy underscored the necessity of shielding the high voltages at play in the lab.

From "Big Science" by Michael Hiltzik

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