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 Additionally, the treatment pen features hydrogen peroxide, which is gentler on teeth thus providing even more comfort. Jessie Quinn, Peoplemag, 15 May 2024 In nearly all commercial products, from at-home strips to mouthwashes, the key ingredient is hydrogen peroxide, which is generally safe but should be used with a few caveats. San Diego Union-Tribune, 14 May 2024 In the process of generating the pigment for our hair, these cells also produce some other chemicals, one of which is hydrogen peroxide (yes, the stuff that bleaches your hair). Amy Eisinger, Allure, 8 May 2024 The prototype, which measures eight feet long and weighs 300 pounds, was powered by a hydrogen peroxide monopropellant engine for its initial jaunt in the sky. Rachel Cormack, Robb Report, 2 Apr. 2024 Now, thanks to this TikTok trend, many are putting other liquids, like mouthwash or hydrogen peroxide, in their water flossers. Maggie O'Neill, Verywell Health, 7 Mar. 2024 Other substances—like hydrogen peroxide—can damage your water flosser. Maggie O'Neill, Verywell Health, 7 Mar. 2024 That’s because contact solution that contains hydrogen peroxide — an ingredient found in many explosives — isn’t allowed on planes. Katie Jackson, Travel + Leisure, 24 Feb. 2024 Its workers have been adding hydrogen peroxide and iron to the liquid waste to reduce the benzene concentrations. Tony Briscoe, Los Angeles Times, 10 Mar. 2024

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 21 May. 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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