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
The pollutants could thwart the recovery of the planet's ozone layer, worsening the damage caused by ozone-depleting substances used in aerosol sprays and refrigerators in the past.
—
Tereza Pultarova, Space.com, 2 Feb. 2025
Scientists track air quality with the air quality index, or AQI, which incorporates different pollution sources like ozone and fine particulates.
—Alejandra Borunda, NPR, 8 Jan. 2025
Ground-level ozone, however, is a byproduct of pollution and that can have harmful health impacts when inhaled.
—Killian Baarlaer, The Courier-Journal, 20 Sep. 2024
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
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Tereza Pultarova, Space.com, 2 Feb. 2025
Scientists track air quality with the air quality index, or AQI, which incorporates different pollution sources like ozone and fine particulates.
—Alejandra Borunda, NPR, 8 Jan. 2025
Ground-level ozone, however, is a byproduct of pollution and that can have harmful health impacts when inhaled.
—Killian Baarlaer, The Courier-Journal, 20 Sep. 2024
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
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 16 Feb. 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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