desmogged

Cultural Dictionary

smog definition


A haze or fog composed of water vapor, complex molecules, and suspended particles.

Note: In North America, the primary cause of smog is pollution from automobile exhaust.
Note: The Los Angeles basin, where pollutants can be trapped by inversions and the surrounding mountains, has frequent problems with smog, as do other major urban areas.
Note: The word smog is a combination of smoke and fog.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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