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

Record breaking temperatures created a heat dome across western Ontario and Minnesota with some places reaching over 100 degrees. — Ava Berger, NPR, 16 July 2026

Halfway through the week of July 13, Pittsburgh's temperature was set to peak in the upper 90s, with conditions expected to feel even hotter as a heat dome impacting much of the United States drove temperatures to dangerous highs. — Finch Walker, USA Today, 15 July 2026

This year, like last year, had a record strength heat dome set up across the eastern United States. — Sean MacAday, Sacbee.com, 14 July 2026

One of the planet’s strongest heat domes will be located over the north-central United States on Tuesday, with its outer edges reaching eastward toward the Mid-Atlantic. — Ben Noll, Washington Post, 14 July 2026

Word History

First Known Use

1985, in the meaning defined above

Rhymes for heat dome

• biome
• genome
• nichrome
• noisome
• prodrome
• radome
• rhizome
• shalom
• syndrome
• acrosome
• aerodrome
• catacomb