transformer

noun

trans·​form·​er tran(t)s-ˈfȯr-mər How to pronounce transformer (audio)
: one that transforms
specifically : a device employing the principle of mutual induction to convert variations of current in a primary circuit into variations of voltage and current in a secondary circuit

Examples of transformer 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.
Damage to the central facility in Natanz, located 300 kilometers (186 miles) south of Tehran, was primarily limited to electricity switch yards and transformers. Jason Ma, Fortune, 22 June 2025 Firefighters put out an electrical fire at the Hartford Public Library on Tuesday morning after a transformer exploded and left the library and City Hall with no power. Justin Muszynski, Hartford Courant, 17 June 2025 Long Island Rail Road riders had a hectic commute Tuesday morning, with multiple lines rerouted, delayed or canceled as firefighters responded to a transformer room fire at Grand Central Madison in Manhattan. Evan Simko-Bednarski, New York Daily News, 10 June 2025 Furthermore, the company has paused capital spending on a transformer facility in Weirton, West Virginia. Trefis Team, Forbes.com, 2 June 2025 See All Example Sentences for transformer

Word History

First Known Use

1596, in the meaning defined above

Time Traveler
The first known use of transformer was in 1596

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Cite this Entry

“Transformer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/transformer. Accessed 30 Jun. 2025.

Kids Definition

transformer

noun
trans·​form·​er tran(t)s-ˈfȯr-mər How to pronounce transformer (audio)
: a device for changing an electric current into one of different voltage
Last Updated: - Updated example sentences
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