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- Dictionarysmog/smɒɡ/
noun
- 1. fog or haze intensified by smoke or other atmospheric pollutants: "exhaust emissions are mainly responsible for the smog"
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Smog is air pollution that reduces visibility. The word “smog” was coined in the early 20th century, and is a contraction (portmanteau) of the words smoke and fog to refer to smoky fog due to its opacity, and odour.
- 42 min
Smog is a mixture of smoke, gases, and chemicals that pollutes the air and harms health. Learn more about smog, its causes, effects, and synonyms from Cambridge Dictionary.
External audio. "Fighting Smog in Los Angeles", Distillations Podcast, 2018 Science History Institute. Smog, or smoke fog, is a type of intense air pollution. The word "smog" was coined in the early 20th century, and is a portmanteau of the words smoke and fog [1] to refer to smoky fog due to its opacity, and odor. [2]
Smog is a fog made heavier and darker by smoke and chemical fumes, or a photochemical haze caused by air pollution. Learn the etymology, synonyms, examples, and related articles of smog from Merriam-Webster.
May 13, 2024 · Smog, community-wide polluted air. Although the term is derived from the words smoke and fog, it is often used to describe the pall of automotive or industrial origin that lies over many cities, and its composition is variable. At least two distinct types of smog are recognized: sulfurous smog and photochemical smog.
- The Editors of Encyclopaedia Britannica
Oct 19, 2023 · Smog is air pollution that reduces visibility. The term "smog" was first used in the early 1900s to describe a mix of smoke and fog. The smoke usually came from burning coal. Smog was common in industrial areas, and remains a familiar sight in some cities today. Today, most of the smog we see is photochemical smog.
noun. A form of air pollution produced by the reaction of sunlight with hydrocarbons, nitrogen compounds, and other gases primarily released in automobile exhaust. Smog is common in large urban areas, especially during hot, sunny weather, where it appears as a brownish haze that can irritate the eyes and lungs.
