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

Recent Examples on the Web Its active ingredient is typically hydrogen peroxide, although some formulas contain sodium percarbonate or sodium perborate. Jolie Kerr, Better Homes & Gardens, 28 Sep. 2024 Each strip is formulated with enamel-safe hydrogen peroxide that powerfully whitens teeth in a pinch. Clara McMahon, People.com, 6 Oct. 2024 Each dissolving strip is powered by hydrogen peroxide and the brand's proprietary Elixir X, a blend of antioxidant-rich ingredients like green tea leaf and cranberry seed extracts. Anamaria Glavan, Allure, 5 Oct. 2024 Scrub the hydrogen peroxide and mold away with a scrub brush. Rabekah Henderson, Southern Living, 27 Sep. 2024 See all Example Sentences for hydrogen peroxide 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hydrogen peroxide.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1872, in the meaning defined above

Time Traveler
The first known use of hydrogen peroxide was in 1872

Dictionary Entries Near hydrogen peroxide

Cite this Entry

“Hydrogen peroxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrogen%20peroxide. Accessed 5 Nov. 2024.

Kids Definition

hydrogen peroxide

noun
: an unstable liquid compound containing hydrogen and oxygen and used especially for bleaching and as an antiseptic

Medical Definition

hydrogen peroxide

noun
: an unstable compound H2O2 used especially as an oxidizing and bleaching agent and as an antiseptic

More from Merriam-Webster on hydrogen peroxide

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