1
: a triatomic very reactive form of oxygen that is a bluish irritating gas of pungent odor, that is a major air pollutant in the lower atmosphere but a beneficial component of the upper atmosphere, and that is used for oxidizing, bleaching, disinfecting, and deodorizing
2
: pure and refreshing air
relished the ozone of morning
Examples of ozone in a Sentence
Scientists are concerned about ozone depletion.
A light breeze filled the rooms of our seaside cottage with ozone.
Recent Examples on the Web
This clinic wasn’t a one-off — practitioners around the country offer ozone therapy.
—
Hannah Kerman, STAT, 29 Apr. 2026
The New Haven, Hartford, Waterbury metro area continued to post failing grades for ozone smog but showed improvements in particle pollution, according to the report.
—Livi Stanford, Hartford Courant, 28 Apr. 2026
Ground-level ozone is created by chemical reactions between pollutants, according to the Environmental Protection Agency.
—Eva Flowe
april 28, Charlotte Observer, 28 Apr. 2026
The collection combines Billy, the company’s new AI platform, with laser technology and Atmos, a process with G2 ozone technology to eliminate manual processes, reduce variability and minimize environmental impact.
—Angela Velasquez, Footwear News, 24 Apr. 2026
See All Example Sentences for ozone
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Hannah Kerman, STAT, 29 Apr. 2026
The New Haven, Hartford, Waterbury metro area continued to post failing grades for ozone smog but showed improvements in particle pollution, according to the report.
—Livi Stanford, Hartford Courant, 28 Apr. 2026
Ground-level ozone is created by chemical reactions between pollutants, according to the Environmental Protection Agency.
—Eva Flowe
april 28, Charlotte Observer, 28 Apr. 2026
The collection combines Billy, the company’s new AI platform, with laser technology and Atmos, a process with G2 ozone technology to eliminate manual processes, reduce variability and minimize environmental impact.
—Angela Velasquez, Footwear News, 24 Apr. 2026
See All Example Sentences for ozone
Cite this Entry
“Ozone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ozone. Accessed 2 May. 2026.
Copy CitationKids Definition
ozone
noun1
: a form of oxygen that is a bluish irritating sharp-smelling gas containing three atoms per molecule, and that is used especially in disinfecting, deodorizing, and bleaching
2
: pure and refreshing air
Medical Definition
ozone
noun
: a triatomic very reactive form of oxygen that is a bluish irritating gas of pungent odor, that is formed naturally in the atmosphere by a photochemical reaction and is a major air pollutant in the lower atmosphere but a beneficial component of the upper atmosphere, and that is used for oxidizing, bleaching, disinfecting, and deodorizing
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