dioxide

noun

di·​ox·​ide (ˌ)dī-ˈäk-ˌsīd 

: an oxide (such as carbon dioxide) containing two atoms of oxygen in the molecule

Examples of dioxide in a Sentence

Recent Examples on the Web

Silicon dioxide, commonly known as silicon or silica, is naturally found in foods and mineral water.1 It's also used in certain foods as an additive (with the code E551). —Merve Ceylan, Health, 2 Nov. 2024

Sulfur dioxide, a toxic gas emitted during volcanic eruptions, can irritate the respiratory system, the eyes and skin, according to the Centers for Disease Control and Prevention. —Ty Roush, Forbes, 21 Nov. 2024

Silicon dioxide can be used as a main ingredient in dietary supplements or in small amounts to improve their stability. —Merve Ceylan, Health, 2 Nov. 2024

Nitrogen dioxide, a lung-irritating gas and component of smog, is nearly inescapable as it is produced by the burning of fossil fuels. —Tony Briscoe, Los Angeles Times, 5 Oct. 2024

Word History

Etymology

International Scientific Vocabulary

First Known Use

circa 1847, in the meaning defined above

Phrases Containing dioxide

• carbon dioxide
• chlorine dioxide
• lead dioxide
• manganese dioxide
• nitrogen dioxide
• silicon dioxide
• sulfur dioxide
• titanium dioxide

Kids Definition

dioxide

noun

di·​ox·​ide (ˈ)dī-ˈäk-ˌsīd 

: an oxide containing two atoms of oxygen in the molecule

Medical Definition

dioxide

noun

di·​ox·​ide (ˈ)dī-ˈäk-ˌsīd 

: an oxide (as carbon dioxide) containing two atoms of oxygen in a molecule