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.
Both are transformers with a configurable chain of thought (CoT), supporting low, medium, and high settings. Ryan Whitwam, ArsTechnica, 5 Aug. 2025 The distribution system, the transformers and the wires that come to our homes, every little bit of power that moves from the power plant to our homes, on a very hot day gets eroded a little bit. Alan Ohnsman, Forbes.com, 4 Aug. 2025 Around midday, a crew of half a dozen track workers could be seen muscling a replacement ground-isolation transformer down to the southbound tracks on the Eighth Ave. line. Evan Simko-Bednarski, New York Daily News, 31 July 2025 Angel Rodriguez uses a transformer from an old television to charge a battery in preparation for blackouts at his home in the Bahia neighborhood of Havana on 26 May 2025.Ramon Espinosa/AP But development lacks scale and speed. IEEE Spectrum, 1 July 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 20 Aug. 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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