alternating current

noun

: an electric current that reverses its direction at regularly recurring intervals
abbreviation AC

Examples of alternating current in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Electricity generated at power plants has what’s called an alternating current — its direction swaps 60 times per second. Evan Simko-Bednarski, New York Daily News, 3 Nov. 2024 This gear converted grid power to direct current and then converted it back to alternating current—conversions that consumed a full 6 percent of the plant’s electricity. IEEE Spectrum, 3 Sep. 2024 The shingle-style component—made of both glass solar and steel tiles—absorbs sunlight and converts direct current energy into alternating current energy that can power the home. Demetrius Simms, Robb Report, 29 Oct. 2024 The inverter is bidirectional, so that alternating current produced by the e-axle under regenerative braking is turned into direct current to charge the battery. Jason Barlow, WIRED, 17 Oct. 2024 See all Example Sentences for alternating current 

Word History

First Known Use

1833, in the meaning defined above

Time Traveler
The first known use of alternating current was in 1833

Dictionary Entries Near alternating current

Cite this Entry

“Alternating current.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alternating%20current. Accessed 15 Dec. 2024.

Kids Definition

alternating current

noun
: an electric current that reverses its direction at regular intervals
abbreviation AC

More from Merriam-Webster on alternating current

Last Updated: - Updated example sentences
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