heat dome

noun

plural heat domes
: a large weather pattern characterized by high atmospheric pressure that collects and holds an unusual amount of heat over a particular area

Examples of heat dome 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.
As a heat dome pushes temperatures into the 90s for the first few days of September, Pittsburgh is swapping to remote learning at some schools. — Finch Walker, USA Today, 31 Aug. 2026 After a summer punctuated by heat waves and sprawling heat domes, the idea of squeezing in one more hot-weather vacation may have lost some of its appeal. — Brittany Anas, Forbes.com, 30 Aug. 2026 The Southeast is roasting under a heat dome that’s set to send several rounds of severe storms and flooding to the Northeast and Great Lakes this week. — Tyler Ory, CNN Money, 30 Aug. 2026 Further south, the San Joaquin Valley will be much hotter as a heat dome sits over Southern California and Arizona. — Sean MacAday, Sacbee.com, 24 Aug. 2026 See All Example Sentences for heat dome

Word History

First Known Use

1985, in the meaning defined above

Time Traveler
The first known use of heat dome was in 1985

Rhymes for heat dome

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Browse Nearby Words

heat devil
heat dome
heated
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Cite this Entry

“Heat dome.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/heat%20dome. Accessed 4 Sep. 2026.

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