sulfur dioxide

noun Chemistry.
a colorless, nonflammable, water-soluble, suffocating gas, SO 2 , 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.

Origin:
1865–70

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To sulfur dioxide
American Heritage
Science Dictionary
sulfur dioxide  
A colorless, poisonous gas or liquid with 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. Chemical formula: SO2.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
Sulfur dioxide and closely related chemicals are known primarily as a cause of
  acid rain.
Likewise, acid rain from sulfur dioxide pollution has destroyed much of the
  vegetation in the area.
Sulfur dioxide combines with water vapor to form sulfuric acid particles that
  scatter, reflect, and absorb sunlight.
Renewable diesel also creates far fewer sulfur dioxide, particulate, and
  nitrogen oxide emissions.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature