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
Carbon dioxide, the byproduct of respiration of all living animals, is particularly attractive.
—
David Hu, The Conversation, 18 Mar. 2026
The fear of a refinery spewing sulfur-dioxide soot and unleashing acid rain, Yoder said, was enough to prompt the county health department to create a pollution-control office to enforce air-quality regulations and end the refinery plans.
—Jenny Staletovich, Miami Herald, 10 Mar. 2026
On the Red Planet, this hardware could convert a carbon-dioxide-rich atmosphere into breathable oxygen and methane, fueling the trip home.
—Mrigakshi Dixit, Interesting Engineering, 2 Mar. 2026
If carbon-dioxide emissions continue apace, Williams estimates, moderate or greater clear-air turbulence could rise by as much as a hundred and seventy per cent on flight routes over the North Atlantic by the middle of the century.
—Burkhard Bilger, New Yorker, 2 Mar. 2026
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David Hu, The Conversation, 18 Mar. 2026
The fear of a refinery spewing sulfur-dioxide soot and unleashing acid rain, Yoder said, was enough to prompt the county health department to create a pollution-control office to enforce air-quality regulations and end the refinery plans.
—Jenny Staletovich, Miami Herald, 10 Mar. 2026
On the Red Planet, this hardware could convert a carbon-dioxide-rich atmosphere into breathable oxygen and methane, fueling the trip home.
—Mrigakshi Dixit, Interesting Engineering, 2 Mar. 2026
If carbon-dioxide emissions continue apace, Williams estimates, moderate or greater clear-air turbulence could rise by as much as a hundred and seventy per cent on flight routes over the North Atlantic by the middle of the century.
—Burkhard Bilger, New Yorker, 2 Mar. 2026
See All Example Sentences for dioxide
Cite this Entry
“Dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dioxide. Accessed 20 Mar. 2026.
Copy CitationKids 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
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