HEAT WAVE Synonyms: 11 Similar and Opposite Words

heat wave

noun

Definition of heat wave

as in dog days

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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.

Recent Examples of heat wave The first is a major marine heat wave along the coast that started last year. — Sean MacAday, Sacbee.com, 29 Oct. 2026 That means the true death toll of a heat wave is often underreported. — Raymond Zhong, New York Times, 22 Oct. 2026 Residents probably have another big charge coming, as many have not yet received their September bills reflecting the state’s highest electricity use in four years, and there was another major heat wave earlier this month. — Kevinisha Walker, Los Angeles Times, 19 Oct. 2026 Conditions inside Pennsylvania’s prisons have been described as a sauna during a summer heat wave and bitterly cold in the winter, especially when heating systems have malfunctioned. — Jaquelyn Jahn, The Conversation, 16 Oct. 2026 See All Example Sentences for heat wave

Recent Examples of Synonyms for heat wave

heat

Noun

The system combines molten salt reactors with thermal energy storage, allowing excess heat to be stored when electricity demand is low and used to generate additional power when demand increases.

— Neetika Walter, Interesting Engineering, 28 Oct. 2026
Unusual weather conditions played a role, officials said, with the number of extreme heat warning days tripling from five in 2025 to 15 so far this year.

— Melissa Gomez, Los Angeles Times, 28 Oct. 2026

Definition of heat

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heat-treats

heat wave

heave

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“Heat wave.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/heat%20wave. Accessed 30 Oct. 2026.

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Synonyms of heat wave

noun

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