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 The other occurred on July 18, 2001, in San Diego, when a transformer at Qualcomm Stadium caught fire, causing a section of lights to go dark in the third inning. Nick Piecoro, The Arizona Republic, "Conditions play in Arizona Diamondbacks' favor before rain halts game vs. Cincinnati Reds," 21 Apr. 2021 Emergency crews responded Monday to reports of a fire and explosion involving an underground power transformer in Omaha, Nebraska. David Aaro, Fox News, "Nebraska transformer fire, explosion prompt hotel evacuation: reports," 6 Apr. 2021 The driver knocked down live wires when the car hit the transformer, forcing power to be turned off in the area, KCAL and a local photojournalist reported. Fox News, "LA pursuit suspect drives off freeway, hits transformer and bursts into flames; suspect in custody," 25 Mar. 2021 Another transformer exploded moments later, lighting up the sky on Northeast 42nd Avenue. Jamie Goldberg, oregonlive, "Northeast Portland residents fear they’ll be stuck with bills after ice storm power surge fries appliances," 27 Feb. 2021 Hank Aaron, Frank Robinson, Johnny Bench, Harmon Killebrew, Roberto Clemente, and Reggie — who hit a blast that might have traveled 500 feet if it hadn’t been stopped by a transformer atop the uppermost deck of Tiger Stadium. Dan Shaughnessy,, "Recalling another high-stakes Brady-Mahomes matchup, and other thoughts," 5 Feb. 2021 Laque had only liability insurance on the car, not comprehensive coverage that might have covered the transformer tragedy. Katy Reckdahl,, "Her car was crushed by transformers in Hurricane Zeta, days after she moved to New Orleans," 5 Nov. 2020 Yet domestic electrical steel capacity and transformer capacity are insufficient to meet demand. The Editorial Board, WSJ, "Trump’s Steel Election Trap," 29 Sep. 2020 In one sense, the Raiders are the anti-Chiefs, an anachronism assembled to win with brute force: with fullbacks and blocking tight ends and by running with Josh Jacobs, who harnesses the power of a transformer, out of two-back sets. Ben Shpigel, New York Times, "103 Seconds to Go. Is Patrick Mahomes the Quarterback? No Problem.," 23 Nov. 2020

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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Statistics for transformer

Last Updated

28 Apr 2021

Cite this Entry

“Transformer.” Dictionary, Merriam-Webster, Accessed 8 May. 2021.

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More Definitions for transformer



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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