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
Sarah Jividen, Health, 17 May 2025
Hydrogen peroxide reverts to plain water after exposure to sunlight and is safer for use than chlorine bleach.
—Mary Marlowe Leverette, Southern Living, 10 Apr. 2025
Lauren Valenti, Vogue, 4 Feb. 2019
Lauren O'Connor, Ms, Health, 16 Dec. 2024
The enamel-safe kit uses an LED light and peroxide gel, similar to laser whitening treatments at a dental office.
—Kaitlin Gates, Better Homes & Gardens, 21 Nov. 2024
See All Example Sentences for peroxide
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Noun
Hydrogen Peroxide Hydrogen peroxide is recognized for its ability to kill bacteria, prevent infections, reduce inflammation, and accelerate healing.
—Sarah Jividen, Health, 17 May 2025
Hydrogen peroxide reverts to plain water after exposure to sunlight and is safer for use than chlorine bleach.
—Mary Marlowe Leverette, Southern Living, 10 Apr. 2025
Verb
Freshly peroxided, Mock headed to the skatepark later that day.
—Lauren Valenti, Vogue, 4 Feb. 2019
Adjective
Quality inspections scrutinize ideal acidity levels, peroxide values, and light-based analyses.8
These standards are set by the International Olive Council (IOC) and the European Commission.
—Lauren O'Connor, Ms, Health, 16 Dec. 2024
The enamel-safe kit uses an LED light and peroxide gel, similar to laser whitening treatments at a dental office.
—Kaitlin Gates, Better Homes & Gardens, 21 Nov. 2024
See All Example Sentences for peroxide
Cite this Entry
“Peroxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/peroxide. Accessed 29 May. 2025.
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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