heat wave


Definition of heat wave

: a period of unusually hot weather

Examples of heat wave in a Sentence

Recent Examples on the Web

An Olympics construction worker has died of suspected heatstroke after falling unconscious as an intense heat wave batters Japan, causing scores of deaths and fueling worries over Tokyo’s plans to host the Games next summer. Washington Post, "Olympics construction worker among dead as heat wave batters Japan," 10 Aug. 2019 This week Australian researchers found that sustained heat waves—such as one that devastated the Great Barrier Reef in 2016—not only bleach corals but sometimes kill them, endangering whole reef ecosystems. Scientific American, "Ballistic Maggots, Synthetic Winks and Why You’re Not Goop: This Week’s Best Science GIFs," 9 Aug. 2019 This, the report warns, kicks off yet another feedback loop: Dry soils strengthen heat waves. Matt Simon, WIRED, "New IPCC Report Shows How Our Abuse of Land Drives Climate Change," 8 Aug. 2019 Scientists have warned that the world should expect more scorching heat waves and extreme weather due to climate change. Isabelle Gerretsen, CNN, "July confirmed as hottest month recorded," 5 Aug. 2019 The Portland metro region has been spared the brutal heat waves that have hit the East Coast and Europe this summer. oregonlive.com, "Portland metro Sunday weather: Hot and dry throughout region; high of 94," 4 Aug. 2019 The potential impacts of climate change also became startlingly vivid to many Swedes last year as an oppressive heat wave baked the country and dried out its forests. Umair Irfan, Vox, "Air travel is a huge contributor to climate change. A new global movement wants you to be ashamed to fly.," 1 Aug. 2019 In a separate Washington Post article, Samenow and Freedman explain that this summer’s melting event was sparked by the same high pressure weather system responsible for Europe’s record-breaking July heat wave. Meilan Solly, Smithsonian, "Greenland Lost 12.5 Billion Tons of Ice in a Single Day," 1 Aug. 2019 Temperatures reached 98 degrees Tuesday at Baltimore-Washington International Thurgood Marshall Airport, though humidity was lower than during an extended heat wave earlier this month. Scott Dance, baltimoresun.com, "Maryland weather: Flash flooding, damaging winds possible Wednesday afternoon, evening," 31 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'heat wave.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of heat wave

1893, in the meaning defined above

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Dictionary Entries near heat wave


heat unit

heat up

heat wave




Statistics for heat wave

Last Updated

12 Aug 2019

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Time Traveler for heat wave

The first known use of heat wave was in 1893

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More Definitions for heat wave

heat wave


English Language Learners Definition of heat wave

: a period of unusually hot weather

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More from Merriam-Webster on heat wave

Rhyming Dictionary: Words that rhyme with heat wave

Spanish Central: Translation of heat wave

Britannica English: Translation of heat wave for Arabic Speakers

Britannica.com: Encyclopedia article about heat wave

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a usually brief trip or an expedition

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