heat wave

noun

: a period of unusually hot weather

Examples of heat wave in a Sentence

Recent Examples on the Web

Italy placed all of its major cities under the highest heat alert Thursday as a blistering heat wave gripped Europe. — CBS News, 6 Aug. 2026

Plant operators have reduced output to about 10% of normal production, prompting the government to introduce emergency conservation measures as a record-breaking heat wave grips the country. — ABC News, 6 Aug. 2026

With heat waves searing parts of the United States and Europe this summer, Las Vegas illustrated how extreme heat can interfere with air travel. — Rio Yamat, Los Angeles Times, 6 Aug. 2026

Once completed, pumps will circulate water through miles of piping, helping heat the building on cold winter days and cooling it off during summer heat waves. — Brian J. Rogal, Chicago Tribune, 6 Aug. 2026

Word History

First Known Use

1893, in the meaning defined above

Rhymes for heat wave

• agave
• behave
• concave
• conclave
• enclave
• engrave
• enslave
• forgave
• landgrave
• margrave
• shortwave
• aftershave

Kids Definition

heat wave

noun

: a period of unusually hot weather