ozone

noun
\ˈō-ˌzōn \

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, -ˈzä- \ 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

President Trump had suggested lifting the prohibition, which environmentalists charge would raise levels of ground ozone during warmer months, during his campaign for the White House. Spencer Jakab, WSJ, "No Tears in the Corn Belt for Scott Pruitt," 6 July 2018 Combined with cloudless weather and hot temperatures, smoke concentration increases the production of ozone. Jordan Cutler-tietjen, sacbee, "Here's the air quality outlook for July 4 and beyond, amid Northern California wildfires," 3 July 2018 An unhealthy level of ground-level ozone is expected. Robert A. Cronkleton, kansascity, "Dangerous heat settles upon Kansas City metro. Just how hot will it get?," 27 June 2018 Simultaneously high levels of ozone and particulates also have much of Chicago under an Air Quality Alert. Tom Skilling, chicagotribune.com, "Near record heat here; flooding rains along the Gulf Coast," 27 May 2018 That loss of ozone, in turn, weakens our protection from UV radiation at the Earth's surface. Chris Mooney, Anchorage Daily News, "Someone, somewhere, is making a banned chemical that destroys the ozone layer, scientists suspect," 16 May 2018 That loss of ozone, in turn, weakens our protection from UV radiation at the Earth's surface. The Washington Post, NOLA.com, "Someone is making a banned chemical that destroys the ozone layer, scientists suspect," 16 May 2018 By mid-century, scientists forecast an additional 13,000 human deaths annually caused by high levels of fine particulate matter in the summer and another 3,000 caused by ozone in the Eastern United States. Fiza Pirani, ajc, "Are air conditioners slowly killing us?," 11 July 2018 In 2010, a group called the Parent South Coast Air Quality Management District paid Wheeler's firm $250,000 to help in its battle against an EPA regulation that would limit ozone emissions. Anchorage Daily News, "EPA’s acting administrator has long lobbying record on issues before the agency," 5 July 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

1 Oct 2018

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

: fresh healthy air especially near the sea

ozone

noun
\ˈō-ˌzōn \

Kids Definition of ozone

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

ozone

noun
\ˈō-ˌzōn \

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, -ˈzän-ik \ adjective

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Comments on ozone

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