smog

noun
\ ˈsmäg How to pronounce smog (audio) , ˈsmȯg \

Definition of smog

: a fog made heavier and darker by smoke and chemical fumes also : a photochemical haze caused by the action of solar ultraviolet radiation on atmosphere polluted with hydrocarbons and oxides of nitrogen especially from automobile exhaust

Other Words from smog

smogless \ ˈsmä-​gləs How to pronounce smog (audio) , ˈsmȯ-​ \ adjective

Synonyms for smog

Synonyms

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Examples of smog in a Sentence

the city's smog was once so bad that darkness often prevailed, even at noon
Recent Examples on the Web Most of us have resorted to cheap sprays from our local supermarket that often do more harm than good - these usually offer disappointingly short life-spans, smell too sharply, and clog your nostrils like smog. Grooming Playbook, The Salt Lake Tribune, 10 May 2022 If the heat, the altitude and the passionate fans at Mexico’s iconic fortress home don’t get you, the smog will. Los Angeles Times, 24 Mar. 2022 The smog leads to watery eyes, migraines, and lung and heart diseases. Manavi Kapur, Quartz, 22 Nov. 2021 My expectation was to find L.A. a post-apocalyptic, smog-ridden, industrial wasteland. Justin Raystaff Writer, Los Angeles Times, 28 Apr. 2022 Ground-level smog contains ozone, which is the main health concern. Ella Nilsen, CNN, 12 Apr. 2022 Ethanol emissions can react with sunlight to create smog, so the agency saw summer as an especially risky time to burn extra ethanol. Nicolás Rivero, Quartz, 12 Apr. 2022 Volatile organic compounds refer to thousands of chemicals that can react to form smog, according to the federal Environmental Protection Agency. Will Langhorne, Arkansas Online, 21 Feb. 2022 During the 2008 Summer Games, Beijing’s smog, energy-intensive and water-depleting construction were a subject of widespread debate and scrutiny from Chinese and international groups. Washington Post, 20 Jan. 2022 See More

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

First Known Use of smog

1880, in the meaning defined above

History and Etymology for smog

smoke + fog

Learn More About smog

Dictionary Entries Near smog

smock mill

smog

smoggy

See More Nearby Entries 

Statistics for smog

Last Updated

17 May 2022

Cite this Entry

“Smog.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/smog. Accessed 26 May. 2022.

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More Definitions for smog

smog

noun
\ ˈsmäg How to pronounce smog (audio) \

Kids Definition of smog

: a fog made heavier and thicker by the action of sunlight on polluted air

smog

noun
\ ˈsmäg also ˈsmȯg \

Medical Definition of smog

: a fog made heavier and darker by smoke and chemical fumes also : a photochemical haze caused by the action of solar ultraviolet radiation on atmosphere polluted with hydrocarbons and oxides of nitrogen especially from automobile exhaust

More from Merriam-Webster on smog

Nglish: Translation of smog for Spanish Speakers

Britannica English: Translation of smog for Arabic Speakers

Britannica.com: Encyclopedia article about smog

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