Autotransformer
Pronunciation : Au`to*trans*form"er
Part of Speech : n. [Auto-+ transformer.] (Elec.)
Definition : Defn: A transformer in which part of the primary winding is used as a secondary winding, or vice versa; -- called also a compensator or balancing coil.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder