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

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Still, astronomers have been concerned that burning Starlink satellites threatens the ozone layer, pointing to the release of vaporized metals. Michael Kan, PCMAG, 30 Jan. 2025 According to a new study, this emerging threat could compromise the delicate balance of our planet’s protective ozone layer. Max Springer, Scientific American, 25 June 2024 But this method could also affect weather patterns or weaken the ozone layer that protects us from ultraviolet radiation. Mark Fischetti, Scientific American, 24 Sep. 2024 However, these refrigerants are being phased out due to environmental regulations aimed at protecting the ozone layer. Thomas Grizzetti, Forbes, 23 Dec. 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 15 Feb. 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

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