transformer
noun
trans·form·er
tran(t)s-ˈfȯr-mər 
: 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 equipment needed to keep the grid running – transformers that regulate voltage, circuit breakers that protect against faults, high-voltage cables that carry power across regions, and steel poles that hold the network together – is hard to make, and materials are limited.
—
Kyri Baker, The Conversation, 14 Nov. 2025
Before May 2024, the last G5 storm to hit Earth occurred in 2003, resulting in power outages in Sweden and damaging power transformers in South Africa.
—Ashley Strickland, CNN Money, 12 Nov. 2025
This also makes supporting components like inductors, transformers, and capacitors much smaller and lighter, a key benefit for aviation.
—Sujita Sinha, Interesting Engineering, 4 Nov. 2025
Cosplayers are a community unto themselves, and at NYCC, the likelihood of passing by a fully functioning DIY transformer costume is as great as passing someone on the street who had a bodega bacon, egg and cheese sandwich for breakfast.
—Nikki Birch, NPR, 31 Oct. 2025
See All Example Sentences for transformer
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Kyri Baker, The Conversation, 14 Nov. 2025
Before May 2024, the last G5 storm to hit Earth occurred in 2003, resulting in power outages in Sweden and damaging power transformers in South Africa.
—Ashley Strickland, CNN Money, 12 Nov. 2025
This also makes supporting components like inductors, transformers, and capacitors much smaller and lighter, a key benefit for aviation.
—Sujita Sinha, Interesting Engineering, 4 Nov. 2025
Cosplayers are a community unto themselves, and at NYCC, the likelihood of passing by a fully functioning DIY transformer costume is as great as passing someone on the street who had a bodega bacon, egg and cheese sandwich for breakfast.
—Nikki Birch, NPR, 31 Oct. 2025
See All Example Sentences for transformer
Cite this Entry
“Transformer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/transformer. Accessed 22 Nov. 2025.
Copy CitationKids Definition
transformer
noun
trans·form·er
tran(t)s-ˈfȯr-mər
: a device for changing an electric current into one of different voltage
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