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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
If there are some really tough spots, add hydrogen peroxide to your baking soda paste. Cody Godwin, USA TODAY, 23 Jan. 2025 If your cast iron, ceramic, or porcelain sink has deep discoloration, combine baking soda with hydrogen peroxide instead of water for a more powerful clean. Mary Cornetta, Better Homes & Gardens, 29 Oct. 2024 Grab some cleaning rags and an old toothbrush or scrub brush, as well as rubbing alcohol, hydrogen peroxide, bleach or detergent for smaller surface mold growths. Bridget Reed Morawski, Architectural Digest, 14 Jan. 2025 Think: rubbing alcohol, hand sanitizer, white vinegar, hydrogen peroxide, dish soap, baking soda, and nail polish remover. Christina Pérez, Vogue, 10 Jan. 2025 See all Example Sentences for hydrogen peroxide 

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 7 Feb. 2025.

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

Last Updated: - Updated example sentences
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