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.
The key is not only making time to eat, but picking the right things to eat—foods that replenish fluids, electrolytes, and other nutrients that a heat wave takes away from you. Jeffrey Kluger, Time, 28 July 2025 This advisory is in effect until Monday at 2 a.m. Protect yourself during a heat wave with these tips from the NWS Stay hydrated: Keep yourself well-hydrated by drinking plenty of fluids. Nc Weather Bot, Charlotte Observer, 27 July 2025 These extremes can be seen in the current heat wave, with forecasts for record breaking temperatures under the high pressure area, and intense rainfall in storms around the perimeter of the heat dome. Dinah Voyles Pulver, USA Today, 26 July 2025 In the United States, heat waves have grown more frequent and intense every decade since the 1960s. Yasmin Tayag, The Atlantic, 26 July 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 2 Aug. 2025.

Kids Definition

heat wave

noun
: a period of unusually hot weather

More from Merriam-Webster on heat wave

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