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

Temperature and carbon-dioxide levels are controlled within the equipment enclosure. — Sabbir Rangwala, Forbes.com, 29 June 2026

At the heart of the design is a material called vanadium dioxide (VO₂), a rather strange compound famous for its split personality. — New Atlas, 25 May 2026

Nitrogen Dioxide Nitrogen dioxide is a colorless, odorless gas present in appliances that burn fuel, including gas, kerosene, or wood. — Sanja Jelic, Verywell Health, 29 Apr. 2026

Israeli military strikes on Iranian oil infrastructure have sparked days-long conflagrations, releasing a plume of noxious sulflur dioxide over an area roughly the size of Italy. — Tony Briscoe, Los Angeles Times, 4 June 2026

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

Rhymes for dioxide

• abide
• allied
• applied
• aside
• astride
• azide
• backside
• bankside
• bastide
• bayside
• bedside
• belied

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