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
For ozone, this is the maximum 8-hour ozone average in 24 hours.
—
Jordan King, MSNBC Newsweek, 4 June 2025
Atmospheric conditions are expected to be favorable for producing high levels of ozone air pollution in the Dallas-Fort Worth area on Saturday.
—Star-Telegram Weather Bot, Fort Worth Star-Telegram, 30 May 2025
The technique also incorporates Smart O3, an ozone booster that accelerates the reaction of ozone on indigo, enhancing the bleaching process directly on raw garments.
—Andrea Onate, Footwear News, 28 May 2025
Using data on ozone and fine particle pollution from various government monitoring sites, the assessment assigns failing grades for ozone smog to counties housing approximately 125 million people, and for daily particle pollution to counties with a total of 77 million residents.
—Henna Hundal, Forbes.com, 1 May 2025
See All Example Sentences for ozone
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Jordan King, MSNBC Newsweek, 4 June 2025
Atmospheric conditions are expected to be favorable for producing high levels of ozone air pollution in the Dallas-Fort Worth area on Saturday.
—Star-Telegram Weather Bot, Fort Worth Star-Telegram, 30 May 2025
The technique also incorporates Smart O3, an ozone booster that accelerates the reaction of ozone on indigo, enhancing the bleaching process directly on raw garments.
—Andrea Onate, Footwear News, 28 May 2025
Using data on ozone and fine particle pollution from various government monitoring sites, the assessment assigns failing grades for ozone smog to counties housing approximately 125 million people, and for daily particle pollution to counties with a total of 77 million residents.
—Henna Hundal, Forbes.com, 1 May 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 9 Jun. 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
Love words? Need even more definitions?
Merriam-Webster unabridged
Share