alternator

noun

al·​ter·​na·​tor ˈȯl-tər-ˌnā-tər How to pronounce alternator (audio)
also ˈal-
: an electric generator for producing alternating current

Examples of alternator in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
At the core of the system is a three-phase alternator paired with an integrated rectifier. — Jijo Malayil, Interesting Engineering, 20 Jan. 2026 These components include the starter, alternator, and battery—all three play an important role in starting the engine. — Michael Harley, Forbes.com, 24 Feb. 2026 The repair shop should check for computer trouble codes, test the battery and alternator, and inspect the alternator drive belt. — John Paul Senior Manager Public Affairs and Traffic Safety Aaa Northeast, Hartford Courant, 20 June 2026 The problems started on the first lap for Reddick, who radioed his team about an alternator problem that caused his voltage to drop dangerously low. — ABC News, 22 Mar. 2026 See All Example Sentences for alternator

Word History

Etymology

alternate entry 2 + -or entry 1

First Known Use

1883, in the meaning defined above

Time Traveler
The first known use of alternator was in 1883

Rhymes for alternator

See All Rhymes for alternator

Browse Nearby Words

alternativo
alternator
alternats
See all Nearby Words

Cite this Entry

“Alternator.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alternator. Accessed 7 Jul. 2026.

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Kids Definition

alternator

noun
al·​ter·​na·​tor ˈȯl-tər-ˌnāt-ər How to pronounce alternator (audio)
also ˈal-
: an electric generator for producing alternating current

More from Merriam-Webster on alternator

Nglish: Translation of alternator for Spanish Speakers

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