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
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.
However, these refrigerants are being phased out due to environmental regulations aimed at protecting the ozone layer. Thomas Grizzetti, Forbes, 23 Dec. 2024 The ozone layer protects us by acting as a filter between the sun and the Earth's atmosphere. Brandi D. Addison, Austin American-Statesman, 28 June 2024 Scientists project that if current trends continue, the ozone layer could fully recover by 2066, marking a significant triumph of international environmental cooperation and scientific innovation. Tom Howarth follow, Newsweek, 1 Nov. 2024 The missing ozone layer and magnetic field means ultraviolet radiation from the Sun is about 30% stronger than on Earth, sterilizing those dusty red rocks. Michael Irving, New Atlas, 17 Oct. 2024 See all Example Sentences for ozone layer 

Word History

First Known Use

1927, in the meaning defined above

Time Traveler
The first known use of ozone layer was in 1927

Dictionary Entries Near ozone layer

Cite this Entry

“Ozone layer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ozone%20layer. Accessed 10 Jan. 2025.

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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!