Smog Definition
smŏg, smôg
noun
A noxious mixture of fog and smoke.
Webster's New World
A form of air pollution produced by the photochemical reaction of sunlight with hydrocarbons and nitrogen oxides that have been released into the atmosphere, especially by automotive emissions.
American Heritage
A low-lying, perceptible layer of polluted air.
Webster's New World
Synonyms:
- smogginess
- pollution
- exhaust
- fumes
- haze
- dirty fog
- smaze
- smoke haze
- mist
- fog
- air-pollution
verb
(informal) To get a smog check; to check a vehicle or have it checked for emissions.
If the car is more than five years old, you'll have to have it smogged before you can register it.
Wiktionary
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