Generic term used to describe mixtures of pollutants in the atmosphere. Also see industrial smog and photochemical smog.

Generally considered only photochemical air pollution. Originally meant a combination of smoke and fog. 

1905, blend of smoke and fog, formed "after Lewis Carrol's example" [Klein; see portmanteau]. Reputedly coined in reference to London, and first attested there in a paper read by Dr. H. [..]

Originally smog meant a mixture of smoke and fog. Today, smog means air that has restricted visibility due to pollution, or pollution formed in the presence of sunlight-photochemical smog.

type of air pollution common in manufacturing areas or areas with high traffic. Read more in the NG Education Encyclopedia

Smog (contraction for 'smoke fog') is a fog in which smoke or other forms of atmospheric pollutant have an important part in causing the fog to thicken, and have unpleasant and dangerous phy [..]

air pollution by a mixture of smoke and fog Smog is a type of air pollution; the word "smog" is a portmanteau of smoke and fog. Modern smog is a type of air pollution derived [..]

A low-lying perceptible layer of polluted air. The word was coined to mean a noxious mixture of smoke and fog.

a mixture of smoke and fog produced by factory and domestic emissions which provide hygroscopic nuclei for condensation to occur onto.

Smog is a combination of the words smoke and fog. It is a form of air pollution formed from the emissions from combustion reacting with sunlight to produce secondary pollutants.

Otherwise known as smoke fog, a mixture of water droplets and smoke from burning coal, factories, automobiles and more.

A contraction of smoke-fog, used to describe the combination of these conditions.

Mixture of particulate matter and chemical pollutants in the lower atmosphere, usually over urban areas. SMSA - Standard Metropolitan Statistical Area:

combination of smoke and fog; air pollution that forms when ozone and vehicle exhaust react with sunlight. smooth muscle -

Air pollution produced by the action of sunlight on hydrocarbons, nitrogen oxides, and other pollutants.

Primarily a winter phenomenon that occurs when sulfur dioxide emissions and smoke particles react with water vapor.

(n) air pollution by a mixture of smoke and fog

Pollution formed by the interaction of pollutants and sunlight (photochemical smog), usually restricting visibility, and occasionally hazardous to health.

Air pollution associated with oxidants.

the term comes from a combination of smoke and fog. However, in Australia most smog arises from chemical reactions between oxides of nitrogen and gaseous volatile organic compounds that take place in the presence of sunlight. see photochemical smog.

A fog or haze that is intensified by smoke or other atmospheric pollutants.

A generic term for visibly poor air quality, smog is an historical contraction of smoke and fog. Today's photochemical smog is characterized by a stagnant haze produced by chemical reactions of s [..]

A type of air pollution containing ozone and other reactive chemical compounds formed by the reaction of sunlight with hydrocarbons and nitrogen oxides. Derived from the combination of "smoke&quo [..]

Smog is formed in the Earth's lower atmosphere, near ground level, when pollutants emitted by cars, power plants, industrial boilers, refineries, chemical plants, and other sources react chemical [..]

Literally a contraction of "smoke" and "fog"; the colloquial term used for photochemical fog, which includes ozone and numerous other contaminants. Smog usually add [..]

Dust, smoke, or chemical fumes that pollute the air and make hazy, unhealthy conditions (literally, the word is a blend of smoke and fog). Automobile, truck, bus, and other vehicle exhausts and partic [..]

Air pollution typically associated with oxidants. (See: photochemical smog.)

Low-lying urban air that can make the air appear dirty or hazy, smog contains ground level ozone, nitrous oxides, sulphur oxides, carbon monoxide, carbon dioxide and suspended particles from motor vehicles, industry, and other sources. Large cities have the greatest problems with smog, especially during the summer.

Air pollution typically associated with oxidants. (See: photochemical smog.)

A mixture of smoke and fog polluting the Atmosphere. (Dorland, 27th ed)

Air pollution consisting of smoke and fog, which occurs in large urban and industrial areas and is mainly caused by the action of sunlight on burned fuels, mostly from car exhausts. Smog can cause eye [..]

Air pollution caused by a mixture of smoke and fog.

A mixture of smoke and fog polluting the atmosphere. (Dorland, 27th ed)

This is a term used to describe a mixture of smoke and fog. Smog occurs when high concentrations of moisture is combined with smoke (often containing oxides of sulfur and nitrogen) in the presence of [..]

Smog is the most visible form of air pollution. It is a brownish-yellow, hazy cloud caused when heat and sunlight react with various pollutants emitted from industry, cars, pesticides and oil-based home products. The word "smog" is a combination of the words smoke and fog.

Ozone, particulate matter, humidity and other pollutants that mix together in the air and reduce visibility.

Smog is the most visible form of air pollution. It is a brownish-yellow, hazy cloud caused when heat and sunlight react with various pollutants emitted from industry, cars, pesticides and oil-based home products. The word "smog" is a combination of the words smoke and fog.

Primarily a winter phenomenon that occurs when sulfur dioxide emissions and smoke particles react with water vapor.

Air pollution produced by the action of sunlight on hydrocarbons, nitrogen oxides, and other pollutants.

Originally smoke plus fog, but now often with or without fog. Some visible manifestation is almost always implied.

A combination of smoke and other particulates, ozone

A combination of the words "smoke" and "fog", the term originally referred to suspended particulate air pollution (TSP/PM10/PM2.5). These days, it is used more often to refer to th [..]

A combination of smoke, ozone, hydrocarbons, nitrogen oxides and other chemically reactive compounds which, under certain conditions of weather and sunlight, may result in a murky brown haze that causes adverse health effects. The primary source of smog in California is motor vehicles.

Originally smog meant a mixture of smoke and fog. Now, it means air that has restricted visibility due to pollution or pollution formed in the presence of sunlight--photochemical smog.

Smog is a mixture of gases and aerosols generated from a variety of sources. Smog has a damaging effect on the respiratory organs of people. Most smog is attributed to the exhaust from automobiles and [..]

A mixture of pollutants, principally ground-level ozone, produced by chemical reactions in the air involving smog-forming chemicals. A major portion of smog-formers comes from burning of petroleum-based fuels such as gasoline. Other smog-formers, volatile organic compounds, are found in products such as paints and solvents. Smog can harm health, da [..]

This is a term used to describe a mixture of smoke and fog. Smog occurs when high concentrations of moisture is combined with smoke (often containing oxides of sulfur and nitrogen) in the presence of [..]

A mixture of smoke and fog.

Secret Master of Gaming. A mythical roleplaying personality or personalities. Anyone claiming to be a SMOG or know a SMOG is lying, and probably feeling insecure.

Originally smog meant a mixture of smoke and fog. Now, it means air that has restricted visibility due to pollution or pollution formed in the presence of sunlight--photochemical smog.

Smog is used to describe the mixture of pollutants in the air that we breathe. The main contributors to smog in Nova Scotia are ground level ozone and fine particulate matter.

a term used to describe many air pollution problems. Smog is a contraction of smoke and fog; it describes the irritating stagnant haze resulting from the sun's effect on pollutants in the air. [..]

In 1905 Dr. H.A. Des Voeux used the term smog to describe the conditions of sooty or smoky fogs. These are usually associated with sulphur dioxide pollution and smoke pollution. There is also summerti [..]

Pollution consisting of smoke and sulphur dioxide trapped at ground level. It usually occurs on cold, calm winter days. The term smog was derived from smoke and fog. Transboundary

Settlement Metering Operating Guides

Smog - contraction for 'smoke fog'. An unpleasant fog in which smoke or other atmospheric pollutants (sea spray, dust) have an important part in causing the fog to thicken.

Fog that has become mixed and polluted with smoke.

Originally, a contraction of smoke and fog , that characterized air pollution episodes in London, Ankara, _zmir and _stanbul.

Dust, smoke, or chemical fumes that pollute the air and make hazy, unhealthy conditions (literally, the word is a blend of moke and fog). Automobile, truck, bus, and other vehicle exhausts and particu [..]

Originally smog meant a mixture of smoke and fog. Now, it means air that has restricted visibility due to pollution or pollution formed in the presence of sunlight--photochemical smog.

A noxious mixture of particulates and gases that is the result of urban air pollution

An event of ground-level air pollution.

Smog is a type of air pollutant. The word "smog" was coined in the early 20th century as a blending of the words smoke and fog to refer to smoky fog, its opacity, and odor. The word was then intended [..]

Smog is a type of air pollutant. The word "smog" was coined in the early 20th century as a blending of the words smoke and fog to refer to smoky fog, its opacity, and odor. The word was then intended [..]

The SMOG grade is a measure of readability that estimates the years of education needed to understand a piece of writing. SMOG is an acronym for Simple Measure of Gobbledygook. SMOG is widely used, pa [..]

Smog is a form of air pollution. Smog or SMOG may also refer to: SMOG, a measure of readability SMOG (literary group), an informal group of young Soviet poets Smog (band), of Bill Callahan, a music a [..]

Smog is a public artwork by American artist Tony Smith located to the south east of McCardell Bicentennial Hall on the Middlebury College campus, in Middlebury, Vermont. An example of minimalist sculp [..]

SMOG (Russian: СМОГ) was one of the earliest informal literary groups independent of the Soviet state in the post-Stalin Soviet Union. Among the several interpretations of the acronym are Smelsot', My [..]

Originally smog meant a mixture of smoke and fog. Now, it means air that has restricted visibility due to pollution or pollution formed in the presence of sunlight--photochemical smog.