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
New Mexico Democrats have proposed a measure to prohibit new emissions in counties with high ozone concentrations and pushed a constitutional amendment that would protect people’s rights to clean air and water.
—
Phillip M. Bailey, USA TODAY, 19 Jan. 2025
It’s been No. 1 for ozone pollution for decades, Pruitt said.
—Jen Christensen, CNN, 13 Jan. 2025
Experts say ozone does best in hot, sunny weather, with some saying temperature is the biggest driver in ozone creation.
—Austin Corona, The Arizona Republic, 8 Nov. 2024
Los Angeles already has the nation's worst ozone pollution, which has been described as sunburn of the lungs, in addition to some of the worst particle pollution in the U.S.
—Eduardo Cuevas, USA TODAY, 9 Jan. 2025
See all Example Sentences for ozone 
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Phillip M. Bailey, USA TODAY, 19 Jan. 2025
It’s been No. 1 for ozone pollution for decades, Pruitt said.
—Jen Christensen, CNN, 13 Jan. 2025
Experts say ozone does best in hot, sunny weather, with some saying temperature is the biggest driver in ozone creation.
—Austin Corona, The Arizona Republic, 8 Nov. 2024
Los Angeles already has the nation's worst ozone pollution, which has been described as sunburn of the lungs, in addition to some of the worst particle pollution in the U.S.
—Eduardo Cuevas, USA TODAY, 9 Jan. 2025
See all Example Sentences for ozone
Dictionary Entries Near ozone
Cite this Entry
“Ozone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ozone. Accessed 30 Jan. 2025.
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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