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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
Before she was brought onto the plane, Scofield said, the research was used to locate and measure a hole in the earth’s ozone layer in the 1980s, finding where chlorofluorocarbons — chemicals commonly used as refrigerants — were destroying ozone in the atmosphere.
—Nollyanne Delacruz, The Mercury News, 15 May 2024
The ozone layer is a thin blanket in the stratosphere made of molecules with three oxygen atoms.
—Will Sullivan, Smithsonian Magazine, 2 May 2024
See all Example Sentences for ozone layer
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ozone layer.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Word History
First Known Use
1927, in the meaning defined above
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Cite this Entry
“Ozone layer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ozone%20layer. Accessed 30 May. 2024.
Kids Definition
ozone layer
noun
: a layer of the earth's atmosphere at heights of about 20 to 30 miles (32 to 48 kilometers) that is normally characterized by high ozone content which blocks most of the sun's ultraviolet radiation from entry into the lower atmosphere
More from Merriam-Webster on ozone layer
Britannica.com: Encyclopedia article about ozone layer
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