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
An April report ranked the Washington/Baltimore/Arlington region as the 36th worst in the country and second worst in the mid-Atlantic region for ozone smog.
—
Jt Moodee Lockman, CBS News, 12 Dec. 2025
Officina39 introduced ZeroPP last year, an integrated package of low-impact specialty chemicals that works in synergy with the latest machine technologies like laser, ozone and nebulization.
—Angela Velasquez, Sourcing Journal, 9 Dec. 2025
While older forms of ozone therapy have been used to treat autoimmune conditions, the newer EBOO method has been touted for potential anti-aging benefits — although experts warn that evidence of its effectiveness is lacking.
—Melissa Rudy, FOXNews.com, 5 Dec. 2025
To sweeten the deal, the mattress is made without ozone depleters, mercury, lead, and more harmful substances.
—Nashia Baker, Architectural Digest, 1 Dec. 2025
See All Example Sentences for ozone
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Jt Moodee Lockman, CBS News, 12 Dec. 2025
Officina39 introduced ZeroPP last year, an integrated package of low-impact specialty chemicals that works in synergy with the latest machine technologies like laser, ozone and nebulization.
—Angela Velasquez, Sourcing Journal, 9 Dec. 2025
While older forms of ozone therapy have been used to treat autoimmune conditions, the newer EBOO method has been touted for potential anti-aging benefits — although experts warn that evidence of its effectiveness is lacking.
—Melissa Rudy, FOXNews.com, 5 Dec. 2025
To sweeten the deal, the mattress is made without ozone depleters, mercury, lead, and more harmful substances.
—Nashia Baker, Architectural Digest, 1 Dec. 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 16 Dec. 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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