direct current

noun

: an electric current flowing in one direction only and substantially constant in value
abbreviation DC

Examples of direct 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.
The researchers then connected the bulbs to a 110-volt (V) direct current power supply, based on the original setup, and powered them for roughly 20 seconds. Georgina Jedikovska, Interesting Engineering, 26 Jan. 2026 The facility will include arrays of solar panels that will generate capacity of 90 megawatts of alternate current and 127 megawatts of direct current electricity. Rob Nikolewski, San Diego Union-Tribune, 29 Dec. 2025 Flow Neuroscience of Sweden has developed a headset that emits a type of low-intensity electrical current called transcranial direct current stimulation to treat depression. Emily Mullin, Wired News, 22 Dec. 2025 This will take more than undersea cables and high voltage direct current lines capable of transmitting power over long distances with minimal leakage. Yew-Poh Mak, Fortune, 26 Nov. 2025 See All Example Sentences for direct current

Word History

First Known Use

1849, in the meaning defined above

Time Traveler
The first known use of direct current was in 1849

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Cite this Entry

“Direct current.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/direct%20current. Accessed 31 Jan. 2026.

Kids Definition

direct current

noun
: an electric current flowing in one direction only
abbreviation DC

Medical Definition

direct current

noun
: an electric current flowing in one direction only and substantially constant in value
abbreviation DC

More from Merriam-Webster on direct current

Last Updated: - Updated example sentences
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