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English definition of “lightning”

lightning

noun [U] (ELECTRIC FLASH)   /ˈlɑɪt·nɪŋ/
a flash of bright light in the sky produced by electricity moving within or between clouds, or between clouds and the ground: That tree was struck by lightning in a recent thunderstorm. lightning bolt (also bolt of lightning) A lightning bolt or bolt of lightning is a particular flash of bright light seen in the sky.
(Definition of lightning noun (ELECTRIC FLASH) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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