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 Environmental authorities issued a High Pollution Advisory in the Phoenix area for Thursday as light breezes were expected to allow ozone to accumulate in the Valley. Emily Wilder, The Arizona Republic, "High Pollution Advisory issued for metro Phoenix on Thursday," 18 Sep. 2020 Vehicles are the largest contributor to ozone pollution in Maricopa County. AZCentral.com, "Rivers, clean air, imperiled species: How Trump's environmental rollbacks affect Arizona," 29 Oct. 2020 The trends reflect the peak ozone levels observed in a network of over a dozen monitors in the Washington region. Washington Post, "Washington had best summer air quality on record due to covid-19 restrictions and good weather," 6 Oct. 2020 Flowers with open, exposed pollen—like buttercups—had more UV-absorbing pigmentation when ozone levels were low and radiation was high. Rasha Aridi, Smithsonian Magazine, "Flowers Are Changing Color in Response To Climate Change," 2 Oct. 2020 Increasing ozone levels from a developing heat wave also contributed to the alert, which indicates unhealthy air quality is expected and bans wood burning, officials said. Kellie Hwang, SFChronicle.com, "How the wildfire spreading in Napa will affect Bay Area air quality," 27 Sep. 2020 The health department and the Regional Air Quality Control Council have pegged those contributions at about 70-80% of the ozone levels along the Front Range. Judith Kohler, The Denver Post, "Clearing the air? New study says Colorado likely underestimates emissions from oil, gas wells," 28 Feb. 2020 The device has a three-stage filtration system: filter one removes dust and animal hair; filter two removes gas, ozone, and volatile compounds found in the home, such as formaldehyde; and filter three is the UltraHEPA filter. Allen Foster, chicagotribune.com, "AirDoctor review: Does this top-of-the-line air purifier’s performance justify the price?," 17 Oct. 2020 The implications of their findings were dire: Without the protective ozone, an increase in ultraviolet radiation would put the health of many species, including humans, at risk. John Schwartz, New York Times, "Mario Molina, 77, Dies; Sounded an Alarm on the Ozone Layer," 13 Oct. 2020

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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Time Traveler for ozone

Time Traveler

The first known use of ozone was in 1841

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Statistics for ozone

Last Updated

15 Nov 2020

Cite this Entry

“Ozone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ozone. Accessed 30 Nov. 2020.

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More Definitions for ozone

ozone

noun
How to pronounce ozone (audio)

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

More from Merriam-Webster on ozone

Nglish: Translation of ozone for Spanish Speakers

Britannica.com: Encyclopedia article about ozone

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