hydrogen peroxide
noun
: an unstable compound H2O2 used especially as an oxidizing and bleaching agent, an antiseptic, and a propellant
Examples of hydrogen peroxide in a Sentence
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The clever bit is when these fuels flow through the Draper engine and encounter a catalyst that decomposes the hydrogen peroxide into high-pressure oxygen and steam.
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New Atlas, 25 Feb. 2026
If there is mold in your humidifier, it should be deep cleaned with either chlorine bleach or hydrogen peroxide—never both together.
—Mary Marlowe Leverette, The Spruce, 25 Feb. 2026
Fill your spray bottle with equal parts warm water and hydrogen peroxide.
—Ashlyn Needham, Southern Living, 19 Feb. 2026
Never mix rubbing alcohol with hydrogen peroxide, and always label your bottles.
—Louise Parks, Martha Stewart, 18 Feb. 2026
See All Example Sentences for hydrogen peroxide
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New Atlas, 25 Feb. 2026
If there is mold in your humidifier, it should be deep cleaned with either chlorine bleach or hydrogen peroxide—never both together.
—Mary Marlowe Leverette, The Spruce, 25 Feb. 2026
Fill your spray bottle with equal parts warm water and hydrogen peroxide.
—Ashlyn Needham, Southern Living, 19 Feb. 2026
Never mix rubbing alcohol with hydrogen peroxide, and always label your bottles.
—Louise Parks, Martha Stewart, 18 Feb. 2026
See All Example Sentences for hydrogen peroxide
Cite this Entry
“Hydrogen peroxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrogen%20peroxide. Accessed 11 Mar. 2026.
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