trans·​form·​er | \ tran(t)s-ˈfȯr-mər How to pronounce transformer (audio) \

Definition of transformer

: 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 That was the final verdict on why a transformer in one of the arena’s three power stations failed right before Game 1. Gene Myers, Detroit Free Press, 16 May 2022 Last December, a tree fell on a transformer and blew out most of the mountain’s electricity. Los Angeles Times, 27 Apr. 2022 The fractal burning process typically uses a high-voltage transformer, often repurposed from a microwave oven, to flow current across wood items that have been soaked with a chemical solution. Jason Duaine Hahn,, 25 Apr. 2022 The biggest and best of these are all based on an architecture invented in 2017 called the transformer. Quanta Magazine, 14 Apr. 2022 Each transformer, now connected on separate wires, is capable of powering three pumps. Miriam Marini, Detroit Free Press, 5 Apr. 2022 Primer is an older competitor in this space, founded two years before the invention of the transformer. Rob Toews, Forbes, 28 Mar. 2022 An electric power transformer blew up and lit up a woman’s entire yard, knocking out her power at 8 p.m. Oct. 30. Joan Rusek, cleveland, 17 Nov. 2021 Music, public-address announcements and other features appeared to be back online by halftime, but FC Cincinnati addressed the pregame situation after the match in a statement, saying a transformer failure produced the issues. Pat Brennan, The Enquirer, 6 Mar. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'transformer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of transformer

1596, in the meaning defined above

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Time Traveler for transformer

Time Traveler

The first known use of transformer was in 1596

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Dictionary Entries Near transformer



transformer oil

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Statistics for transformer

Last Updated

22 May 2022

Cite this Entry

“Transformer.” Dictionary, Merriam-Webster, Accessed 25 May. 2022.

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More Definitions for transformer


trans·​form·​er | \ trans-ˈfȯr-mər How to pronounce transformer (audio) \

Kids Definition of transformer

: a device for changing the voltage of an electric current


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