heat wave

noun

: a period of unusually hot weather

Examples of heat wave in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
As parts of Southern California are bracing themselves for a heat wave, specific parts of Washington have been warned by the National Weather Service (NWS) to expect up to 8 inches of snow to fall in areas above 4,000 feet through to Wednesday morning. Amanda Greenwood, MSNBC Newsweek, 29 Oct. 2025 Those heat waves pushed the race-day temperatures well above the window for peak performance. Matthew Glasser, ABC News, 27 Oct. 2025 The marine heat wave was just the final death blow. Alex Harris, Miami Herald, 24 Oct. 2025 Nearly all of Florida’s Acropora coral colonies are now dead, a dramatic downfall linked to a record-breaking ocean heat wave in 2023. Doyle Rice, USA Today, 24 Oct. 2025 See All Example Sentences for heat wave

Word History

First Known Use

1893, in the meaning defined above

Time Traveler
The first known use of heat wave was in 1893

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Cite this Entry

“Heat wave.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20wave. Accessed 4 Nov. 2025.

Kids Definition

heat wave

noun
: a period of unusually hot weather

More from Merriam-Webster on heat wave

Last Updated: - Updated example sentences
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