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:
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

Origin of Smog

  • Blend of smoke and fog

    From Wiktionary

  • sm(oke) (f)og

    From American Heritage Dictionary of the English Language, 5th Edition

Find Similar Words

Find similar words to smog using the buttons below.

Words Starting With

Words Ending With

Unscrambles

smog