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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Goble said this month’s heat wave has set records in every corner of Colorado, sometimes by double digits. Evan Bush, NBC news, 27 Mar. 2026 Experts are warning that the unprecedented heat wave that has roasted the West during the past two weeks has also set the stage for a potentially perilous wildfire season. Andrew Freedman, CNN Money, 27 Mar. 2026 Temperatures were forecast to linger around 30 or 40 degrees above average in a number of southwestern and Central states, continuing a trend that began earlier in the week as a massive heat wave expands further into the western two-thirds of the country, said CBS News meteorologist Nikki Nolan. Emily Mae Czachor, CBS News, 26 Mar. 2026 The lack of a snowpack will only increase soil moisture deficits, which can make heat waves more severe. Greg Porter, San Francisco Chronicle, 26 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 2 Apr. 2026.

Kids Definition

heat wave

noun
: a period of unusually hot weather

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