heat lightning

noun
|Updated on: 26 Jun 2018

Definition of heat lightning

: 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

Recent Examples of heat lightning from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'heat lightning.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of heat lightning

1810

in the meaning defined above

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HEAT LIGHTNING Defined for English Language Learners

heat lightning

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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