ozone layer
noun
: an atmospheric layer at heights of about 20 to 30 miles (32 to 48 kilometers) that is normally characterized by high ozone content which blocks most solar ultraviolet radiation from entry into the lower atmosphere
Examples of ozone layer in a Sentence
Recent Examples on the Web
This radiation thins Earth’s ozone layer and lets in more ultra violet (UV) and the interaction of these particles with the Earth’s magnetic field also results in aurora.
—
Laura Baisas, Popular Science, 16 Apr. 2025
The primary cause behind the Devonian and Ordovician mass extinction events is not fully understood, but both of them have also been linked to the depletion of Earth's ozone layer.
—Sharmila Kuthunur, Space.com, 20 Mar. 2025
A couple of stellar eruptions may have occurred close to our home planet in the past 500 million years — during the crucial window that life evolved — potentially stripping away the ozone layer and triggering one or two biological annihilations, the study suggests.
—Jackie Wattles, CNN, 22 Mar. 2025
The causes of both events had been long debated, however one hypothesis has linked them to depletions in the Earth's protective ozone layer, such as might be caused by a supernova going off in local space.
—David Faris, Newsweek, 17 Mar. 2025
See All Example Sentences for ozone layer
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 Baisas, Popular Science, 16 Apr. 2025
The primary cause behind the Devonian and Ordovician mass extinction events is not fully understood, but both of them have also been linked to the depletion of Earth's ozone layer.
—Sharmila Kuthunur, Space.com, 20 Mar. 2025
A couple of stellar eruptions may have occurred close to our home planet in the past 500 million years — during the crucial window that life evolved — potentially stripping away the ozone layer and triggering one or two biological annihilations, the study suggests.
—Jackie Wattles, CNN, 22 Mar. 2025
The causes of both events had been long debated, however one hypothesis has linked them to depletions in the Earth's protective ozone layer, such as might be caused by a supernova going off in local space.
—David Faris, Newsweek, 17 Mar. 2025
See All Example Sentences for ozone layer
Cite this Entry
“Ozone layer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ozone%20layer. Accessed 23 Apr. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share