transformer

noun

trans·​form·​er tran(t)s-ˈfȯr-mər How to pronounce transformer (audio)
Synonyms of transformernext
: 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.
Long delivery delays for electric grid transformers won’t ease up anytime soon unless utilities, tech companies, and other buyers change their strategy, the CEO of the top global manufacturer of the equipment told Semafor. Tim McDonnell, semafor.com, 13 Jan. 2026 The Tuloumne County Sheriff's Office said there was an explosion due to a transformer at Engie, a neighboring facility to Pacific Ultrapower. Brandon Downs, CBS News, 10 Jan. 2026 It's intended to increase service and reliability for MLGW customers — MLGW President and CEO Doug McGowen said the goal was to replace two substation transformers, 10 substation circuit breakers, 2,100 distribution poles and 90,000 feet of defective underground cable each year. Jack Armstrong, Memphis Commercial Appeal, 7 Jan. 2026 The fire broke out at the facility’s largest housing unit after a transformer exploded around 6:30 p.m. Tuesday. Colleen Cronin, Boston Herald, 7 Jan. 2026 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 18 Jan. 2026.

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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