smog

noun

\ ˈsmäg

, 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

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Synonyms for smog

Synonyms

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 And if Nike dares stray from the beloved Dodger blue, perhaps a lovely smog brown would be appropriate. — Chuck Schilken, Los Angeles Times, "Red Sox in yellow and blue? What’s next ... Dodger chartreuse?," 6 Apr. 2021 Even here, in the country’s second-oldest national park, the horizon is the sickly yellow of a cigarette butt, a vaporous mixture of Central Valley smog and forest fire smoke from the myriad infernos burning across the state. — Thayer Walker, Scientific American, "Are Giant Sequoia Trees Succumbing to Drought?," 29 Dec. 2016 The action will help downwind states comply with federal air quality standards for smog, the EPA said. — Abby Smith, Washington Examiner, "Daily on Energy, presented by Bipartisan Policy Center: Former Trump adviser lobbies GOP to reduce emissions through trade policy," 16 Mar. 2021 Heavy smog usually renders cityscapes grey and blurry. — The Economist, "Why is Beijing’s air quality so bad again?," 15 Mar. 2021 Flemons explains that the pink-hued sunsets people love to ’gram from Griffiths Park are actually the result of Cali’s deadly smog. — Steff Yotka, Vogue, "Phlemuns Releases a Spring Collection for Your Body—And Your Mind," 2 Mar. 2021 For the rest of the Hawkeyes, the Terps defense suppressed offense like smog on the hottest day. — Katherine Fominykh, baltimoresun.com, "Katie Benzan breaks 3-point record, Angel Reese returns as No. 8 Maryland women’s basketball overwhelms Iowa, 111-93," 23 Feb. 2021 When combined with nitrogen oxide, the two can react and form the pollutant ozone, or smog. — Halle Parker | Staff Writer, NOLA.com, "Environmental groups oppose Shintech's Louisiana expansion over air pollution concerns," 2 Feb. 2021 During these cooler months, the provincial capital Lahore, which is surrounded by rice-growing districts, is covered with thick smog. — Rina Saeed Khan, The Christian Science Monitor, "In Pakistan, a 'Happy' solution to curb crop burning takes off," 8 Dec. 2020

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.