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Definition of alternator

alternator

/ˈɔːl.tɚ.neɪ.tɚ/
al · ter · na · tor
Plural:alternators
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alternator Lexical Profile

alternator Game Scores & Validity

• noun

1

An electrical generator that converts mechanical energy into electrical energy in the form of alternating current, especially one driven by an internal combustion engine in a motor vehicle to charge the battery and power the electrical system.

Example

"The mechanic diagnosed that a failing alternator was preventing the car battery from recharging while driving."

Synonyms
View all synonyms for alternator

• Nearby Words

alternation
alternative
alternatively
alternator
although
altimeter
altitude

Word Origin & Etymology

Coined in the late 19th century from the verb 'alternate' and the agentive suffix '-or', ultimately deriving from Latin 'alternare' (to do by turns), from 'alternus' (one after the other) and 'alter' (the other).

Cite this Entry

Wordmom. (2026). Definition of Alternator. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/alternator
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