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
These reactions require sunlight and higher temperatures, making warmer months more prone to ozone formation.
—
Joe Edwards, MSNBC Newsweek, 23 July 2025
On air quality alert days, the Southwest Ohio Air Quality Agency recommends several ways community members can help reduce ozone formation, including taking the bus or biking instead of driving, not idling vehicles and refueling vehicles after 8 p.m
What is the heat index?
—Grace Tucker, Cincinnati Enquirer, 23 July 2025
These pollutants are carbon monoxide, lead, ozone, nitrogen dioxide, sulfur dioxide, and particulate pollution.
—Marshall Shepherd, Forbes.com, 20 July 2025
Air Quality Index guidelines (ozone and particle pollution) Some people are more sensitive to air pollution because of their age or health.
—Kristi Tanner, Freep.com, 13 July 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.
Joe Edwards, MSNBC Newsweek, 23 July 2025
On air quality alert days, the Southwest Ohio Air Quality Agency recommends several ways community members can help reduce ozone formation, including taking the bus or biking instead of driving, not idling vehicles and refueling vehicles after 8 p.m
What is the heat index?
—Grace Tucker, Cincinnati Enquirer, 23 July 2025
These pollutants are carbon monoxide, lead, ozone, nitrogen dioxide, sulfur dioxide, and particulate pollution.
—Marshall Shepherd, Forbes.com, 20 July 2025
Air Quality Index guidelines (ozone and particle pollution) Some people are more sensitive to air pollution because of their age or health.
—Kristi Tanner, Freep.com, 13 July 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 29 Jul. 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