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

The aim of buying credits is to lower the overall impact on ozone. Lee Bergquist, Milwaukee Journal Sentinel, "Foxconn industrial operations would represent a major new source of air pollution in region," 28 Mar. 2018 The fuel that LanzaTech produced for today's Virgin flight primarily used carbon monoxide, a contributor to ozone pollution (though not a greenhouse gas), that would otherwise have been released into the atmosphere. Megan Geuss, Ars Technica, "Tonight a Virgin Atlantic 747 will fly on fuel made from industrial waste gas," 2 Oct. 2018 Other pollutants are in the air, including sulphur dioxide, formed by fossil fuel combustion, carbon monoxide and nitrogen dioxide, formed by emissions from motor vehicles, gas heaters and cigarette smoke, and ground-level ozone, formed by smog. Christine Clarridge, The Seattle Times, "Seattle air quality readings vary. Here’s how to interpret them.," 21 Aug. 2018 Ward and the narrator then asserted that ozone depletion causes global warming. Emily Atkin, The New Republic, "What Is Kilauea’s Impact on the Climate?," 26 May 2018 Those hot, stagnant conditions are expected to boost levels of ozone, an unstable gas that forms when emissions from across the region react in the heat and sunlight. Jon Schleuss, latimes.com, "The Fourth of July brings some of the year's worst air pollution. You can thank fireworks," 3 July 2018 Ward described these elements as chlorofluorocarbons, which deplete ozone. Emily Atkin, The New Republic, "What Is Kilauea’s Impact on the Climate?," 26 May 2018 The protocol was adopted in the late 1980s in response to studies that showed CFC-11 and similar gases, collectively known as chlorofluorocarbons, depleted atmospheric ozone. New York Times, BostonGlobe.com, "Is someone secretly producing gas that harms the ozone layer?," 17 May 2018 The protocol was adopted in the late 1980s in response to studies that showed CFC-11 and similar gases, collectively known as chlorofluorocarbons, depleted atmospheric ozone. Henry Fountain, New York Times, "Banned Ozone-Harming Gas Creeps Back, Suggesting a Mystery Source," 16 May 2018

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

16 Apr 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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