hydrogen peroxide


Definition of hydrogen peroxide

: 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

Evan acted quickly, called the vet, and — at the vet’s direction — gave Milo a dose of hydrogen peroxide to induce vomiting. Stephanie Eckelkamp, Good Housekeeping, "Why You Should Never Let Your Dog Eat a Corn Cob," 20 July 2018 Take a clean eyedropper filled with baby oil, mineral oil, glycerin, or hydrogen peroxide, and put a few drops into your ear canal. Korin Miller, SELF, "What to Do If You Have an Earwax Blockage," 29 Jan. 2019 Start by applying hydrogen peroxide or witch hazel to the affected area. Carolyn Twersky, Seventeen, "The Correct Way to Pop a Pimple," 21 Dec. 2018 Apply hydrogen peroxide or lemon juice to the stain. Jolie Kerr, Teen Vogue, "How To Get Period Stains Out: 10 Ways to Remove Blood from Fabric," 17 July 2018 Clean your mattress with baking soda and hydrogen peroxide. Gigi Engle, SELF, "7 Tips for Cleaning Up After Sex Gets Messy," 12 Dec. 2018 The hydrogen peroxide in the strips eliminates up to 14 years of stains, according to the brand. Emma Sarran Webster, Allure, "6 of the Best Teeth-Whitening Kits in the Drugstore," 13 Sep. 2018 How to Get Cranberry Juice Out of a Carpet Blot up as much of the juice as possible, then pour on a little hydrogen peroxide, and wait one minute. Fox News, "Coffee, tea, wine: How to get rid of common stains," 3 Dec. 2015 Like many torpedoes, the Type 65-76As used hydrogen peroxide as underwater fuel. Kyle Mizokami, Popular Mechanics, "The True Story of the Russian Kursk Submarine Disaster," 28 Sep. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hydrogen peroxide.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of hydrogen peroxide

1872, in the meaning defined above

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Statistics for hydrogen peroxide

Last Updated

22 Mar 2019

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Time Traveler for hydrogen peroxide

The first known use of hydrogen peroxide was in 1872

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More Definitions for hydrogen peroxide

hydrogen peroxide


English Language Learners Definition of hydrogen peroxide

: a liquid that is used to make things lighter in color or to kill bacteria

hydrogen peroxide


Kids Definition of hydrogen peroxide

: a liquid chemical containing hydrogen and oxygen and used for bleaching and as an antiseptic

hydrogen peroxide


Medical Definition of hydrogen peroxide

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

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More from Merriam-Webster on hydrogen peroxide

Spanish Central: Translation of hydrogen peroxide

Nglish: Translation of hydrogen peroxide for Spanish Speakers

Britannica.com: Encyclopedia article about hydrogen peroxide

Comments on hydrogen peroxide

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a shady place in a garden or forest

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