per·ox·ide
pə-ˈräk-ˌsīd 
: a compound (such as hydrogen peroxide) in which oxygen is visualized as joined to oxygen
peroxided; peroxiding
: to treat with a peroxide
especially
: to bleach (hair) with hydrogen peroxide
: having or being bleached hair
a peroxide blonde
Examples of peroxide in a Sentence
Recent Examples on the Web
Mary Whitfill Roeloffs,
Forbes.com,
2 July 2026
How to Remove Deodorant Stains With Hydrogen Peroxide Hydrogen peroxide is a mild bleaching agent that breaks down the proteins and aluminum compounds in deodorant stains, says Sokolowski.
—
Madeline Buiano,
Martha Stewart,
2 July 2026
Lauren Valenti,
Vogue,
4 Feb. 2019
Mary Marlowe Leverette,
Southern Living,
14 June 2026
As for beauty, Madonna styled her peroxide blonde hair down in soft waves with a middle part.
—
Christina Perrier,
InStyle,
5 June 2026
See All Example Sentences for peroxide
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Noun
The ship will be disinfected using chlorine and peroxide over the next week and crew members, most of which are from the Philippines, will enter immediate quarantine.
—
Mary Whitfill Roeloffs,
Forbes.com,
2 July 2026
How to Remove Deodorant Stains With Hydrogen Peroxide Hydrogen peroxide is a mild bleaching agent that breaks down the proteins and aluminum compounds in deodorant stains, says Sokolowski.
—
Madeline Buiano,
Martha Stewart,
2 July 2026
Verb
Freshly peroxided, Mock headed to the skatepark later that day.
—
Lauren Valenti,
Vogue,
4 Feb. 2019
Adjective
If the stain is still visible, use the vinegar or baking soda and peroxide method to treat the stain.
—
Mary Marlowe Leverette,
Southern Living,
14 June 2026
As for beauty, Madonna styled her peroxide blonde hair down in soft waves with a middle part.
—
Christina Perrier,
InStyle,
5 June 2026
See All Example Sentences for peroxide
Cite this Entry
“Peroxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/peroxide. Accessed 5 Jul. 2026.
Copy CitationMedical Definition
peroxide
noun
per·ox·ide
pə-ˈräk-ˌsīd
: a compound (as hydrogen peroxide) in which oxygen is visualized as joined to oxygen
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