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

Example Sentences

Scientists are concerned about ozone depletion. A light breeze filled the rooms of our seaside cottage with ozone.
Recent Examples on the Web These days, most tabloid column inches are dedicated to the credibility of her Goopian self-care gimmicks—hello rectal ozone therapy, jade eggs, and magic mushroom seminars. Laura Hawkins, Vogue, 28 Mar. 2023 These days, most tabloid column inches are dedicated to the credibility of her Goopian self-care gimmicks— hello, rectal ozone therapy, jade eggs, and magic mushroom seminars. Laura Hawkins, Glamour, 27 Mar. 2023 Gwyneth Paltrow reveals 'weirdest wellness thing' she's ever done: Rectal ozone therapy Previous:Gwyneth Paltrow denies causing Utah ski crash What is Gwyneth Paltrow accused of in the Utah ski crash? Naledi Ushe, USA TODAY, 20 Mar. 2023 Nichols undergoes intravenous ozone therapy and ultraviolet blood irradiation, and also takes naltrexone, a drug used to treat opioid use disorder. Aria Bendix, NBC News, 11 Mar. 2023 If the ozone were to disappear, dangerous solar ultraviolet light would make it to the Earth’s surface. Don Lincoln, CNN, 13 Jan. 2023 The global average amount of ozone 18 miles high in the atmosphere won’t be back to 1980 pre-thinning levels until about 2040, the report said. Seth Borenstein, The Christian Science Monitor, 10 Jan. 2023 Recovery of ozone over the Arctic and the rest of the world are expected much sooner: by 2045 and 2040 respectively. Jeremy Beaman, Washington Examiner, 9 Jan. 2023 The global average amount of ozone 18 miles (30 kilometers) high in the atmosphere won’t be back to 1980 pre-thinning levels until about 2040, the report said. Time, 9 Jan. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ozone.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

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

First Known Use

1841, in the meaning defined at sense 1

Time Traveler
The first known use of ozone was in 1841

Dictionary Entries Near ozone

Cite this Entry

“Ozone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ozone. Accessed 1 Apr. 2023.

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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