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
As part of its analysis of the project, DEEP also determined the addition of the two new compressors would not meet the threshold for a major modification — which is subject to more stringent review — because the increase in ozone-forming pollutants would not exceed 25 tons per year.
—
John Moritz, Hartford Courant, 9 Feb. 2026
His cleanup process involved ozone machines and air purifiers to get rid of the smoke damage, generators to power the building and space heaters to keep it warm inside.
—Matthew Geiger, Denver Post, 5 Feb. 2026
One was Robert Willner, who had lost his medical license in Florida for claiming to have cured an AIDS patient by administering ozone.
—Business Columnist, Los Angeles Times, 29 Jan. 2026
The indoor pool is purified with ozone.
—Lydia Bell, Condé Nast Traveler, 22 Jan. 2026
See All Example Sentences for ozone
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John Moritz, Hartford Courant, 9 Feb. 2026
His cleanup process involved ozone machines and air purifiers to get rid of the smoke damage, generators to power the building and space heaters to keep it warm inside.
—Matthew Geiger, Denver Post, 5 Feb. 2026
One was Robert Willner, who had lost his medical license in Florida for claiming to have cured an AIDS patient by administering ozone.
—Business Columnist, Los Angeles Times, 29 Jan. 2026
The indoor pool is purified with ozone.
—Lydia Bell, Condé Nast Traveler, 22 Jan. 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 14 Feb. 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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