heat wave

noun

Synonyms of heat wavenext
: a period of unusually hot weather

Examples of heat wave in a Sentence

Recent Examples on the Web
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That cooler air won't stick around though; another big warmup begins Thursday and that could be the start of our 3rd heat wave of the year. Tammie Souza, CBS News, 6 June 2026 Scientists estimate climate change will increase the strength of heat waves and severe storms across Europe. ABC News, 4 June 2026 Last summer, some reported triple-digit increases in their electricity bills due to the supply rate costs and high demand during a heat wave. Robert Channick, Chicago Tribune, 4 June 2026 While average summer temperatures in World Cup host cities generally remain lower than that, North American heat waves in recent years have led to triple-digit temperatures. Rebecca Hersher, NPR, 4 June 2026 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

Browse Nearby Words

Cite this Entry

“Heat wave.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20wave. Accessed 7 Jun. 2026.

Kids Definition

heat wave

noun
: a period of unusually hot weather

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