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.
Editors’ Picks To qualify as a heat wave in Britain, temperatures must meet or exceed a specific threshold for at least three consecutive days. Nazaneen Ghaffar, New York Times, 30 Apr. 2025 During a 2020 heat wave, California’s grid operator was forced to institute rotating outages, a necessary step to protect the grid in California and neighboring states. Michael Wara, Mercury News, 25 Apr. 2025 For a 2012 heat wave in North America, the researchers place Chevron's share of the damages at just shy of $30 billion. John Timmer, ArsTechnica, 23 Apr. 2025 In the summer of 2020, California experienced a brutal heat wave. Elizabeth Kolbert, New Yorker, 7 Apr. 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

Browse Nearby Words

Cite this Entry

“Heat wave.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20wave. Accessed 13 May. 2025.

Kids Definition

heat wave

noun
: a period of unusually hot weather

More from Merriam-Webster on heat wave

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!