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Definition of “smog” - English Dictionary

"smog" in American English

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smognoun [C/U]

us   /smɑɡ, smɔɡ/
air pollution caused by smoke or chemicals mixing with fog: [U] We get a lot of smog downtown. [C] A poisonous smog killed 20 people.
adjective us   /ˈsmɑɡ·i, ˈsmɔ·ɡi/
a smoggy city/day
(Definition of smog from the Cambridge Academic Content Dictionary © Cambridge University Press)

(Definition of smog from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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