peroxide

noun
per·​ox·​ide | \ pə-ˈräk-ˌsīd How to pronounce peroxide (audio) \

Definition of peroxide

 (Entry 1 of 3)

: a compound (such as hydrogen peroxide) in which oxygen is visualized as joined to oxygen

peroxide

verb
peroxided; peroxiding

Definition of peroxide (Entry 2 of 3)

transitive verb

: to treat with a peroxide especially : to bleach (hair) with hydrogen peroxide

peroxide

adjective

Definition of peroxide (Entry 3 of 3)

: having or being bleached hair a peroxide blonde

Keep scrolling for more

Other Words from peroxide

Noun

peroxidic \ pə-​ˌräk-​ˈsi-​dik How to pronounce peroxidic (audio) \ adjective

Examples of peroxide in a Sentence

Recent Examples on the Web: Noun For those sensitive to peroxide, one option is to decrease the time that the dye remains on your hair, but to color it more frequently. Laura Daily, Washington Post, "You can save money by coloring your hair at home. But should you?," 27 Jan. 2020 Nikita Sursin Ah, the early 2000s—the era of boy bands, Myspace, mirror selfies, and hair that was colored in your basement sink with a bottle of bleach and peroxide, à la Christina Aguilera and Beyoncé. Chloe Metzger, Marie Claire, "How to Go Platinum Blonde Without Destroying Your Hair," 24 Aug. 2018 The vacant gas station had been packed with 45 tons of calcium peroxide when the fire started, and crews were initially unaware that the material, which is used for soil remediation, was being stored there, Sorensen said at the time. Jennifer Johnson, chicagotribune.com, "Park Ridge Fire Department looks to replace damaged, aging ladder truck," 4 Nov. 2019 But with Overtone, that never happened, probably because the dye is formulated without peroxide and ammonia that's found in many box dyes. Emma Seymour, Good Housekeeping, "Does Overtone Hair Dye Actually Work on Brown Hair?," 10 Dec. 2019 Stewart arrived at a New York photocall for Charlie's Angels yesterday wearing a backwards hat accented by the sprays of piece-y peroxide liberated at strategic angles, the irreverent maneuver furthered by glimpses of her brunette roots. Calin Van Paris, Vogue, "Kristen Stewart Offers a Lesson in the Art of Ball Cap Glamour," 8 Nov. 2019 While fighting the blaze, the fire department learned the building had been packed with 45 tons of calcium peroxide, a hazardous material used for soil remediation, the department said. Jennifer Johnson, chicagotribune.com, "Park Ridge to owners of fire-damaged former gas station: Tear it down or we will," 16 Oct. 2019 Sorensen said some of the department’s gear and equipment were damaged as a result of the fire because crews were initially unaware that a large amount of calcium peroxide was being stored onsite. Jennifer Johnson, chicagotribune.com, "Fire-damaged Park Ridge gas station must be demolished, city official says," 20 Aug. 2019 Those attending are reminded to bring canned goods, paper products, household goods or peroxide that will be donated to St. Ignatius. Carol Kovach, cleveland.com, "Lakewood Community, European festivals set for Sept. 7: A Place in the Sun," 3 Sep. 2019 Recent Examples on the Web: Verb Freshly peroxided, Mock headed to the skatepark later that day. Lauren Valenti, Vogue, "How This Skateboarder’s Radical Pink Buzz Cut Caught Frank Ocean’s Attention," 4 Feb. 2019

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

See More

First Known Use of peroxide

Noun

1804, in the meaning defined above

Verb

1899, in the meaning defined above

Adjective

1899, in the meaning defined above

Keep scrolling for more

Learn More about peroxide

Time Traveler for peroxide

Time Traveler

The first known use of peroxide was in 1804

See more words from the same year

Statistics for peroxide

Last Updated

15 Feb 2020

Cite this Entry

“Peroxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/peroxide. Accessed 28 Feb. 2020.

Keep scrolling for more

More Definitions for peroxide

peroxide

noun
How to pronounce peroxide (audio)

English Language Learners Definition of peroxide

: a chemical that is used chiefly to kill bacteria or to make hair lighter in color

peroxide

noun
per·​ox·​ide | \ pə-ˈräk-ˌsīd How to pronounce peroxide (audio) \

Kids Definition of peroxide

peroxide

noun
per·​ox·​ide | \ pə-ˈräk-ˌsīd How to pronounce peroxide (audio) \

Medical Definition of peroxide

: a compound (as hydrogen peroxide) in which oxygen is visualized as joined to oxygen

Keep scrolling for more

More from Merriam-Webster on peroxide

Spanish Central: Translation of peroxide

Nglish: Translation of peroxide for Spanish Speakers

Britannica English: Translation of peroxide for Arabic Speakers

Britannica.com: Encyclopedia article about peroxide

Comments on peroxide

What made you want to look up peroxide? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

February 2020 Words of the Day Quiz

  • squirrel in winter
  • Which is a synonym of probity?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Syn City

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!