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A colorless, extremely irritating gas or liquid, SO2, used in many industrial processes, especially in the manufacture of sulfuric acid, and as a preservative, disinfectant, and bleach. It is also a hazardous pollutant resulting from burning fossil fuels and refining sulfide-containing ores.
a colorless, nonflammable, water-soluble, suffocating gas, SO2, formed when sulfur burns: used chiefly in the manufacture of chemicals such as sulfuric acid, in preserving fruits and vegetables, and in bleaching, disinfecting, and fumigating.
A colorless, poisonous gas or liquid, SO2, that has a strong odor. It is formed naturally by volcanic activity, and is a waste gas produced by burning coal and oil and by many industrial processes, such as smelting. It is also a hazardous air pollutant and a major contributor to acid rain.
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|Noun||1.||sulfur dioxide - a colorless toxic gas (SO2) that occurs in the gases from volcanoes; used in many manufacturing processes and present in industrial emissions; causes acid rain|
dioxide - an oxide containing two atoms of oxygen in the molecule
pollutant - waste matter that contaminates the water or air or soil
gas - a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely