smog

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smog

(smog),
Air pollution characterized by a hazy and often highly irritating atmosphere resulting from a mixture of fog with smoke and other air pollutants.
[smoke + fog]

smog

a polluting combination of smoke and fog in the atmosphere.

smog

Photochemical smog Environment An acronym of smoke and fog caused by combustion of often synthetic materials with production of noxious volatile byproducts; smog mortality ↑ substantially when smoke and SO2 levels exceed 750 µg/m3 Clinical Dyspnea, acute exacerbation of COPD; smog triggers asthmatiform Sx–wheezing and markedly ↑ respiratory effort or, if intense, marked cyanosis–PaO2 < 50 mm Hg; PaCO2 50-100 mm Hg, CHF, cor pulmonale. See Air pollution, Bhopal, Clean Air Act, Particular air pollution, Pollution, Yokohama asthma.

smog

(smog)
A hazy and often highly irritating atmosphere resulting from a mixture of fog with smoke and other air pollutants.
[smoke + fog]

smog

smoke-laden fog, a form of environmental pollution.
References in periodicals archive ?
Historically, the closing weeks of summer find the Southern California skies to be the smoggiest.
In Houston, which recently surpassed Los Angeles as the nation's smoggiest city and is under a federal mandate to dramatically reduce ozone levels, more accurate emissions estimates might scuttle the plan to clean up the city's air now being considered by the EPA.
The legislation promised to reduce ground-level ozone in the nation's smoggiest metropolitan areas by requiring the use of cleaner burning reformulated gasolines.
If the air around Sacramento--the smoggiest city in Northern California--looks a bit clearer these days, it may be thanks to Raley's new "Clean Air Machines.
The settlement will require the nine smoggiest cities -- accounting for 25 percent of U.
Bill Anderson, President of APS stated, "The AQMD is the air pollution control agency for all of Orange County, California and the urban portions of Los Angeles, Riverside and San Bernardino counties, the smoggiest region of the U.
That means Southern California, home to some of the smoggiest and hottest and most paved-over spots on Earth, will be ground zero for the summer of sizzle.
But now Houston is the smoggiest city in America, Come home, George W.
1, 1995, reformulated gasoline must replace conventional gasoline in the nine smoggiest cities in the United States: Los Angeles, Baltimore, Chicago, Houston, Milwaukee, New York, Philadelphia, San Diego and Hartford, Conn.
The Los Angeles metropolitan area is not simply the smoggiest, most car-choked region in the United States, an endless grid of boulevards interrupted by elevated freeways and lined with palms nourished by imported water.
The one I live in--Manhattan--is among the smoggiest.
Highlight GORE: "Houston has just become the smoggiest city in the country and Texas is number one in industrial pollution.