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alternator

/ˈɔːltəneɪtər/ · al.ter.na.tor
noun
  1. An electric generator which produces alternating current through mechanical means. The car's alternator was faulty, so the mechanic had to replace it.
noun
  1. A device that converts mechanical energy into electrical energy, often used in vehicles to charge the battery. The alternator in my motorcycle is very efficient and provides a lot of power.

Synonyms

generatorconverterchargermotoralternating current generator

Antonyms

direct current generatorstatic generator
Did you know? The first alternator was invented by French engineer Hippolyte Pixii in 1832, and it was powered by a hand-cranked magnet.

Related terms

generatoralternating currentdirect currentelectricitymechanical energy
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Jul 24, 2026