heat wave

noun

: a period of unusually hot weather

Examples of heat wave in a Sentence

Recent Examples on the Web

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

And this heat wave alone, Barnard explained, has already made sea level rise temporarily by about 6 inches. — Rosanna Xia, Los Angeles Times, 15 Oct. 2026

Chanel’s Mathieu Blazy initiated a tendency toward lightness a year ago, and it has since been taken up broadly, partly in response to extreme heat waves of the summer. — Laird Borrelli-Persson, Vogue, 14 Oct. 2026

Lower sperm concentration and count were associated with exposure to heat waves in a study of men undergoing routine semen analysis in Argentina. — Dr. Jamin Brahmbhatt, CNN Money, 13 Oct. 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