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
Sulfur dioxide was predominantly a product of power plants; automobiles were the biggest culprit in nitrogen oxide emissions.
—
Rachel Rothschild, Foreign Affairs, 24 Aug. 2015
Sulfur dioxide is a key aerosol emitted from burning fossil fuels.
—Lee Habeeb, MSNBC Newsweek, 3 Apr. 2025
Sulfur dioxide, nitrogen oxides, methane, and nitrous oxide emissions could also be reduced.
—Addy Bink, The Hill, 6 Jan. 2025
Sources of Silicon Dioxide Silicon dioxide is found in soil and several foods.
—Merve Ceylan, Health, 2 Nov. 2024
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Rachel Rothschild, Foreign Affairs, 24 Aug. 2015
Sulfur dioxide is a key aerosol emitted from burning fossil fuels.
—Lee Habeeb, MSNBC Newsweek, 3 Apr. 2025
Sulfur dioxide, nitrogen oxides, methane, and nitrous oxide emissions could also be reduced.
—Addy Bink, The Hill, 6 Jan. 2025
Sources of Silicon Dioxide Silicon dioxide is found in soil and several foods.
—Merve Ceylan, Health, 2 Nov. 2024
See All Example Sentences for dioxide
Cite this Entry
“Dioxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dioxide. Accessed 30 Jun. 2025.
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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