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

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Other Words from ozone

ozonic \ ō-​ˈzō-​nik How to pronounce ozonic (audio) , -​ˈzä-​ How to pronounce ozonic (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

According to state data, oil and gas development is the largest source of volatile organic compounds, pollutants that when heated by the sun form ground-level ozone and contribute to smog. Judith Kohler, The Denver Post, "Colorado toughened up its oil and gas rules. But how tough are they?," 11 Aug. 2019 Southerly winds are bringing air with high concentrations of chemical compounds that form ozone when combined with solar radiation. Sophie Carson, Milwaukee Journal Sentinel, "DNR issues air quality advisory for eastern Wisconsin," 26 July 2019 Mall said the utility adjusted its treatment process to ensure removal of any toxic elements and has increased utilization of a system that applies ozone to strip away smell and color from water. Kevin Spear, orlandosentinel.com, "Melbourne water supply found to contain potentially toxic algae," 19 July 2019 Higher temperatures make smog harder to control by speeding up the chemical reactions that form ozone. Rahul Mukherjee, latimes.com, "The war on Southern California smog is slipping. Fixing it is a $14-billion problem," 1 July 2019 These gases react with light and organic matter in the atmosphere to make ozone. Deirdre Lockwood, Scientific American, "California Farms Are a Silent but Sizable Source of Air Pollution," 6 Feb. 2018 Denver and the northern Colorado urban corridor have struggled to meet EPA ozone standards for 15 years. Dan Elliott, Los Angeles Times, "Colorado invites EPA to lower its air quality rating," 7 Sep. 2019 Denver and the northern Colorado urban corridor have struggled to meet EPA ozone standards for 15 years. Washington Post, "In a twist, Colorado asks EPA to lower state’s air rating," 6 Sep. 2019 The Center for Urban Forest Research says 100 trees remove 14 tons of carbon dioxide a year as well as pollutants like ozone and particulates from the atmosphere. San Diego Union-Tribune, "La Mesa wins grant for urban forestry, will plant hundreds of trees," 28 June 2019

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

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Statistics for ozone

Last Updated

15 Oct 2019

Look-up Popularity

Time Traveler for ozone

The first known use of ozone was in 1841

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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
chiefly British, informal : 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 ozonic (audio) , -​ˈzän-​ik How to pronounce ozonic (audio) \ adjective

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More from Merriam-Webster on ozone

Rhyming Dictionary: Words that rhyme with ozone

Spanish Central: Translation of ozone

Nglish: Translation of ozone for Spanish Speakers

Britannica.com: Encyclopedia article about ozone

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