heat dome
Americannoun
Etymology
Origin of heat dome
First recorded in 1955–60
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A strong, slow-moving high-pressure system - often called a heat dome - is trapping hot air over the region, pushing temperatures 20–30F above normal in parts of California, Nevada, and Arizona.
From BBC • Mar. 17, 2026
Last week, Chicago was smothered by another heat dome.
From Salon • Aug. 5, 2025
“Thursday and Friday, it starts to build in over our region,“ Tardy said, with the heat dome expected to peak over the weekend as its center settles above inland California.
From Los Angeles Times • Jul. 17, 2024
As the heat wave moved east, the Northeast felt the brunt of the conditions, stemming from a high-pressure system called a heat dome that scorched the Great Lakes region earlier this week.
From New York Times • Jun. 19, 2024
The Southwest's first heatwave of the year is the result of a heat dome: an area of high pressure in which hot air is pushed down and trapped, causing temperatures to soar over large areas.
From BBC • Jun. 7, 2024
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
