Plural of alternator; electrical devices that generate alternating electric current, commonly used in vehicles and power generation.
From 'alternate' (Latin 'alternare') plus '-or' (a suffix for agents or machines), with '-s' for plural.
Your car's alternator is elegantly simple—it just spins magnets past copper coils—yet this device revolutionized transportation by allowing cars to have better electrical systems while running, making features like electric starters and headlights practical.
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