smog definition

smog

Originally it meant a combination of man-made SMOke and nature-made foG, but now it generally refers to photochemical smog trapped near the ground by a temperature inversion in colder climates.

smog is in the Environment & Pollution Control subject.

smog appears in the definitions of the following terms: ozone (O3), catalytic converter and particulate matter

smog appears in these other term: photochemical smog

This content can be found on the following page:

http://www.businessdictionary.com/definition/smog.html