ozone

noun
\ ˈō-ˌzōn How to pronounce ozone (audio) \

Definition of ozone

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

Other Words from ozone

ozonic \ ō-​ˈzō-​nik How to pronounce ozone (audio) , -​ˈzä-​ How to pronounce ozone (audio) \ 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 The chemicals were introduced in the 1990s to replace ones that were depleting the ozone. Washington Post, 10 Aug. 2021 Coal plants also emit nitrogen oxides, which add to San Antonio’s ozone pollution. Elena Bruess, San Antonio Express-News, 13 Nov. 2021 Although short-term exposure to small amounts of methane is not toxic, methane emissions do contribute to ground-level ozone pollution (the main ingredient in smog), which can cause asthma and premature death. Energy Innovation: Policy And Technology, Forbes, 26 Oct. 2021 Volatile hydrocarbons start the chemical reaction to create ozone. Zayna Syed, The Arizona Republic, 16 Oct. 2021 The confluence of wildfire smoke, high inland temperatures and vehicle exhaust is expected to create unhealthy ozone in parts of the region, Bay Area Air Quality Management District officials said Friday. Lauren Hernández, San Francisco Chronicle, 1 Oct. 2021 Biden issued an executive order in January that embraces a 2016 amendment to the 1987 Montreal Protocol on ozone pollution. Compiled Democrat-gazette Staff From Wire Reports, Arkansas Online, 24 Sep. 2021 That sounds effective, but many of these devices create ozone, which has its own health concerns. Dave Johnson, Forbes, 18 June 2021 Knozone Action Days are common in hot months, when pollutants react with sunlight and heat to create ozone. London Gibson, The Indianapolis Star, 17 June 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ozone.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ozone

1841, in the meaning defined at sense 1

History and Etymology for ozone

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

Learn More About ozone

Dictionary Entries Near ozone

ozonation

ozone

ozone-friendly

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Statistics for ozone

Last Updated

28 Nov 2021

Cite this Entry

“Ozone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ozone. Accessed 6 Dec. 2021.

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More Definitions for ozone

ozone

noun

English Language Learners Definition of ozone

: a form of oxygen that is found in a layer high in the earth's atmosphere
: fresh healthy air especially near the sea

ozone

noun
\ ˈō-ˌzōn How to pronounce ozone (audio) \

Kids Definition of ozone

: a faintly blue form of oxygen that is present in the air in small quantities

ozone

noun
\ ˈō-ˌzōn How to pronounce ozone (audio) \

Medical Definition of ozone

: 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

Other Words from ozone

ozonic \ ō-​ˈzō-​nik How to pronounce ozone (audio) , -​ˈzän-​ik How to pronounce ozone (audio) \ adjective

More from Merriam-Webster on ozone

Nglish: Translation of ozone for Spanish Speakers

Britannica.com: Encyclopedia article about ozone

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