Dioxide

/daɪˈɒksaɪd/

Meaning & Definition

noun

A chemical compound that contains two oxygen atoms for each molecule. Dioxides are typically represented by the formula 'XO2', where 'X' can be any chemical element.

Carbon dioxide is produced by the respiration of living organisms.

A class of compounds in which the principal element is bonded to two oxygen atoms.

Silicon dioxide is a major component of sand and glass.

Dioxides can also refer to specific chemical compounds such as sulfur dioxide, which is known for its pungent smell.

Sulfur dioxide is often released from volcanic eruptions and industrial processes.

In environmental chemistry, dioxides can refer to atmospheric gases that contribute to pollution.

The emission of nitrogen dioxide from vehicles can lead to air quality problems.

Etymology

The term 'dioxide' derives from the prefix 'di-' meaning two, and 'oxide' meaning a compound of oxygen.

Common Phrases and Expressions

carbon dioxide

A colorless gas produced by burning carbon and organic compounds and by respiration.

silicon dioxide

A hard, unreactive compound that occurs in nature as quartz and sand.

nitrogen dioxide

A reddish-brown gas with a characteristic sharp, biting odor.

Related Words

oxide

A chemical compound that contains at least one oxygen atom and one other element.

carbon dioxide

A colorless gas produced by the respiration of animals and the combustion of organic matter.

sulfur dioxide

A toxic gas with a pungent, irritating smell, used as a preservative.