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
ozonic adjective

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
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.
Los Angeles already has the nation's worst ozone pollution, which has been described as sunburn of the lungs, in addition to some of the worst particle pollution in the U.S. Eduardo Cuevas, USA TODAY, 9 Jan. 2025 The American Lung Association notes that Salt Lake City ranks among the nation’s most polluted cities for ozone and short-term particle pollution, making the air quality less than ideal. Korin Miller, Outside Online, 27 Aug. 2024 Available to laundry professionals, the free manual offers dos and don’ts for using next-gen technologies like laser, ozone and nebulization on Tencel denim fabrics. Angela Velasquez, Sourcing Journal, 30 Dec. 2024 However, the resolution also emphasized a need to address ongoing challenges in the region — recommending stronger state-federal cooperation on regulating air quality, ozone, particulate matter, haze, methane and hydrofluorocarbon releases. Sharon Udasin, The Hill, 11 Dec. 2024 See all Example Sentences for ozone 

Word History

Etymology

German Ozon, from Greek ozōn, present participle of ozein to smell — more at odor

First Known Use

1840, in the meaning defined at sense 1

Time Traveler
The first known use of ozone was in 1840

Dictionary Entries Near ozone

Cite this Entry

“Ozone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ozone. Accessed 22 Jan. 2025.

Kids Definition

ozone

noun
1
: 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
ozonic adjective

More from Merriam-Webster on ozone

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