autotransformer
noun
au·to·trans·form·er
ˌȯ-tō-tran(t)s-ˈfȯr-mər 
: a transformer in which the primary and secondary coils have part or all of their turns in common
Examples of autotransformer in a Sentence
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Difficulty in procuring replacement autotransformers sometimes extended blackouts, but Ukraine bounced back relatively quickly and survived both winter 2022-2023 and 2023-2024.
—
Suriya Jayanti, TIME, 10 Aug. 2024
At the heart of every power substation are hulking, high-power autotransformers.
—Marc Santora, New York Times, 11 Apr. 2023
The United States has minimal capacity to build autotransformers.
—Thomas Popik, Foreign Affairs, 3 Feb. 2023
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Suriya Jayanti, TIME, 10 Aug. 2024
At the heart of every power substation are hulking, high-power autotransformers.
—Marc Santora, New York Times, 11 Apr. 2023
The United States has minimal capacity to build autotransformers.
—Thomas Popik, Foreign Affairs, 3 Feb. 2023
Cite this Entry
“Autotransformer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/autotransformer. Accessed 31 Oct. 2025.
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