heat lightning

noun

Definition of heat lightning

  1. :  vivid and extensive flashes of electric light without thunder seen near the horizon especially at the close of a hot day and ascribed to far-off lightning reflected by high clouds

1810

First Known Use of heat lightning

1810


HEAT LIGHTNING Defined for English Language Learners

heat lightning

noun

Definition of heat lightning for English Language Learners

  • : flashes of light in the sky that happen without the sound of thunder and that are produced by distant lightning

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