| air pollution containing ozone and other reactive chemical compounds formed by the action of sunlight on nitrogen oxides and hydrocarbons, esp. those in automobile exhaust. |
photochemical smog n.
Air pollution produced by the action of sunlight on hydrocarbons, nitrogen oxides, and other pollutants.
| photochemical smog (fō'tō-kěm'ĭ-kəl) Pronunciation Key
See smog. |