Medical Dictionary

smog

noun \ˈsmäg also ˈsmg\

Medical Definition of SMOG

:  a fog made heavier and darker by smoke and chemical fumes; also :  a photochemical haze caused by the action of solar ultraviolet radiation on atmosphere polluted with hydrocarbons and oxides of nitrogen especially from automobile exhaust

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May 27, 2015
riot act Hear it
a vigorous reprimand or warning
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