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
Higher temperatures also increase preterm birth by increasing levels of the harmful air pollutant called ground-level ozone.
—
Sheetal Khedkar Rao, Chicago Tribune, 23 May 2025
There's also been a 70 percent reduction in key pollutants like carbon monoxide, ozone, particulate matter, nitrogen dioxide, and sulfur dioxide.
—Nick Mordowanec, MSNBC Newsweek, 22 May 2025
Effects of moderate ground-level ozone can be chest pain, coughing, throat irritation and congestion, according to Metroplan.
—Harley Walls, Arkansas Online, 16 May 2025
However, even before xAI's construction began, Shelby County was already in violation of the eight-hour ozone standard that protects public health, which means that xAI may need to implement additional controls.
—ArsTechnica, 25 Apr. 2025
See All Example Sentences for ozone
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Sheetal Khedkar Rao, Chicago Tribune, 23 May 2025
There's also been a 70 percent reduction in key pollutants like carbon monoxide, ozone, particulate matter, nitrogen dioxide, and sulfur dioxide.
—Nick Mordowanec, MSNBC Newsweek, 22 May 2025
Effects of moderate ground-level ozone can be chest pain, coughing, throat irritation and congestion, according to Metroplan.
—Harley Walls, Arkansas Online, 16 May 2025
However, even before xAI's construction began, Shelby County was already in violation of the eight-hour ozone standard that protects public health, which means that xAI may need to implement additional controls.
—ArsTechnica, 25 Apr. 2025
See All Example Sentences for ozone
Cite this Entry
“Ozone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ozone. Accessed 27 May. 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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