ozone layer


Definition of ozone layer

: 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 In 1987, humanity managed to ban the dangerous chemicals that were destroying the ozone layer without authoritarian rule. Adam Frank, The Atlantic, 19 Feb. 2022 In other not-great wildfire news, Bob Berwyn reports for Inside Climate News on new research finding that smoke columns can rise into the stratosphere and deplete the ozone layer, adding to skin cancer risk. Sammy Rothstaff Writer, Los Angeles Times, 24 Mar. 2022 While Earth’s atmosphere contains layers—such as the stratosphere, whose ozone layer protects us from the Sun’s harmful ultraviolet radiation— WASP-189b appears to have a layer of titanium that may act in a similar way. Jamie Carter, Forbes, 31 Jan. 2022 The deadly wildfires that scorched southeastern Australia in 2019 and 2020 triggered atmospheric changes miles high and thinned the ozone layer over large parts of the Southern Hemisphere for months, new research shows. Nidhi Subbaraman, WSJ, 17 Mar. 2022 The layer of smoke in the atmosphere would destroy as much as 75 percent of the ozone layer. Robinson Meyer, The Atlantic, 9 Mar. 2022 At 400 meters below sea level, harmful UV rays are filtered through an evaporation layer above the Dead Sea, the ozone layer, and an extra atmospheric layer. Perri Ormont Blumberg, Travel + Leisure, 13 Feb. 2022 The excess nitrogen oxide in the atmosphere could wash away as much as 7 percent of Earth’s ozone layer, too, according to the study. Jennifer Leman, Popular Mechanics, 31 Dec. 2021 Measures to protect the ozone layer under the 1987 Montreal Protocol are contributing to global warming. The Editorial Board, WSJ, 28 Dec. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ozone layer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of ozone layer

1927, in the meaning defined above

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Time Traveler for ozone layer

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The first known use of ozone layer was in 1927

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Last Updated

10 May 2022

Cite this Entry

“Ozone layer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ozone%20layer. Accessed 23 May. 2022.

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More Definitions for ozone layer

ozone layer


Kids Definition of ozone layer

: a layer of the earth's upper atmosphere that is characterized by high ozone content which blocks most of the sun's ultraviolet radiation from entering the lower atmosphere

More from Merriam-Webster on ozone layer

Britannica.com: Encyclopedia article about ozone layer


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