autotransformer

US:USA pronunciation: respellingUSA pronunciation: respelling(ô′tō trans fôrmər)


WordReference Random House Unabridged Dictionary of American English © 2026
au•to•trans•form•er  (ô′tō trans fôrmər),USA pronunciation n. [Elect.]
  1. Electricitya transformer having a single coil that serves as both a primary coil and a secondary coil.
  • auto-1 + transformer 1890–95

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