photochemical smog


noun Meteorology.

air pollution containing ozone and other reactive chemical compounds formed by the action of sunlight on nitrogen oxides and hydrocarbons, especially those in automobile exhaust.
Also called oxidant smog, smog.

Origin of photochemical smog

First recorded in 1957; photo- + chemical

Medical definitions for photochemical smog

photochemical smog

n.

Air pollution produced by the action of sunlight on hydrocarbons, nitrogen oxides, and other pollutants.

Scientific definitions for photochemical smog

photochemical smog
[ fō′tō-kĕmĭ-kəl ]

See smog.