Last Updated：2025/11/21

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

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photochemical smog

Source Word

photochemical smog

countable uncountable

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

Japanese Meaning

都市部の静かな大気中で、炭化水素や窒素酸化物などの汚染物質が光化学反応を起こし形成される大気汚染

On hot summer afternoons, photochemical smog settled over the city, reducing visibility and aggravating asthma.

暑い夏の午後、光化学スモッグが都市にたちこめ、視界を悪化させ、喘息の症状を悪化させた。

Sense（1）

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

photochemical smogs

（ plural ）