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
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.
Just weeks after major storms brought snow to the Sierra Nevada, a winter heat wave has all but eliminated California’s snowpack gains. Terry Castleman, Los Angeles Times, 6 Mar. 2026 During El Niño, the Pacific Ocean heats up along the equator, influencing the atmosphere in ways that can cause intense storms, droughts and heat waves around the planet. Michael Wysession, Fortune, 6 Mar. 2026 During El Niño, the Pacific Ocean heats up along the equator, influencing the atmosphere in ways that can cause intense storms, droughts and heat waves around the planet. Michael Wysession, The Conversation, 5 Mar. 2026 In recent decades, heat waves have already become hotter, occured more often, and lasted longer. Becky Upham, EverydayHealth.com, 4 Mar. 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 9 Mar. 2026.

Kids Definition

heat wave

noun
: a period of unusually hot weather

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