permafrost
noun
per·ma·frost
ˈpər-mə-ˌfrȯst 
: a permanently frozen layer at variable depth below the surface in frigid regions of a planet (such as earth)
Examples of permafrost in a Sentence
Recent Examples on the Web
This follows a year of concerning signs from the region, including intense wildfires and thawing permafrost pumping out planet-heating pollution.
—
Laura Paddison, CNN, 12 Mar. 2025
Exceeding this limit increases the likelihood of climate tipping points, such as the collapse of the Greenland ice sheet or the thawing of methane-rich permafrost, which could drive further warming.
—David Carlin, Forbes, 19 Feb. 2025
By locating sensors in deep bore holes, the scientists found that the French Alps’ permafrost is warming by 1 to 1.5 degrees Celsius (roughly 1.8 to 2.7 degrees Fahrenheit) a decade.
—Paul Hockenos, Smithsonian Magazine, 9 Jan. 2025
Researchers in Siberia are trying to learn more about a baby mammoth whose nearly-intact remains were found in thawing permafrost after more than 50,000 years.
—Saleen Martin, USA TODAY, 24 Dec. 2024
See All Example Sentences for permafrost
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Laura Paddison, CNN, 12 Mar. 2025
Exceeding this limit increases the likelihood of climate tipping points, such as the collapse of the Greenland ice sheet or the thawing of methane-rich permafrost, which could drive further warming.
—David Carlin, Forbes, 19 Feb. 2025
By locating sensors in deep bore holes, the scientists found that the French Alps’ permafrost is warming by 1 to 1.5 degrees Celsius (roughly 1.8 to 2.7 degrees Fahrenheit) a decade.
—Paul Hockenos, Smithsonian Magazine, 9 Jan. 2025
Researchers in Siberia are trying to learn more about a baby mammoth whose nearly-intact remains were found in thawing permafrost after more than 50,000 years.
—Saleen Martin, USA TODAY, 24 Dec. 2024
See All Example Sentences for permafrost
Cite this Entry
“Permafrost.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/permafrost. Accessed 13 Apr. 2025.
Copy CitationKids Definition
permafrost
noun
per·ma·frost
ˈpər-mə-ˌfrȯst
: a permanently frozen layer at variable depth below the surface in frigid regions of a planet (as earth)
Love words? Need even more definitions?
Merriam-Webster unabridged
Share