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 Cheaper energy storage with batteries could provide an alternative to adding more capacity at electricity substations, or building more transformers. David Stringer,, "Old Electric Car Batteries May Help Cut Costs of Storing Power," 10 May 2020 Lights began to flicker on in some neighborhoods, and crews were seen repairing transformers in other areas. Danica Coto, Anchorage Daily News, "Bahamas tackles massive clean-up after Dorian, 1,300 missing," 13 Sep. 2019 Think back to how New Yorkers reacted in December of 2018 when a transformer explosion in Queens filled the sky with an arresting shade of blue. Samer Kalaf, The New Republic, "Alone in the City of Sirens," 10 Apr. 2020 Siemens, the German industrial giant, has a transformer plant in Wuhan. David Meyer, Fortune, "Global companies enter lockdown mode as coronavirus outbreak rocks China," 30 Jan. 2020 Southern California Edison spokeswoman Susan Cox said Monday that inspectors are focusing on three transformers. San Diego Union-Tribune, "Utility tries to determine cause of Oktoberfest explosions," 7 Oct. 2019 As the transformer burned, people on social media reported seeing lights flashing in the sky west of Milwaukee. Jordyn Noennig, Milwaukee Journal Sentinel, "2,000 without power, lights flash in sky as transformer burns near 98th and Rogers," 4 Jan. 2020 So the architects installed tiny track lighting along the beams, hiding the voltage transformers in the few closets the house did have. New York Times, "Follow Every Step of a Major Midcentury Modern Renovation," 20 Dec. 2019 According to Ashley Losch with the Glendale Fire Department, a contract crew hired through the Salt River Project was working on the transformer at 67th and Olive avenues when the fire started. Ethan Schmidt, azcentral, "3 people hurt after transformer fire near Glendale gas station," 18 Nov. 2019

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.

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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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Last Updated

15 May 2020

Cite this Entry

“Transformer.” Dictionary, Merriam-Webster, Accessed 27 May. 2020.

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More Definitions for transformer


How to pronounce transformer (audio)

English Language Learners Definition of transformer

technical : a device that changes the voltage of an electric current


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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