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photochemical smog

Noun CEFR B2

Definitions

Air pollution caused by photochemical reactions involving hydrocarbons, nitrogen oxides and other pollutants, especially in still air over cities.

countable, uncountable

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See all B2 English words →

See also

Photochemically photochemist photochemistry photochemotherapy photochirogenesis photochlorination

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