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.
Great Noir Thrillers Two of the substation’s transformers were taken offline by the fire. Michael D. Shear, New York Times, 26 Mar. 2025 The destruction of electrical transformers and power stations releases specialized gases such as sulfur hexafluoride, or SF₆, a substance used for its insulating properties in high-voltage equipment. Nils Rokke, Forbes.com, 26 Mar. 2025 All that changed with the rise of enormous large language transformer models, starting with ChatGPT in 2022. Ars Technica, 24 Mar. 2025 But the expansion will require larger transmission lines, more transformers, etc. Eleven. Ian Dexter Palmer, Forbes, 20 Mar. 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 15 Apr. 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
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