peroxide

1 of 3

noun

per·​ox·​ide pə-ˈräk-ˌsīd 

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

peroxidic

pə-ˌräk-ˈsi-dik 

adjective

peroxide

2 of 3

verb

peroxided; peroxiding

transitive verb

: to treat with a peroxide

especially : to bleach (hair) with hydrogen peroxide

peroxide

3 of 3

adjective

: having or being bleached hair

a peroxide blonde

Examples of peroxide in a Sentence

Recent Examples on the Web

Noun

Benzoyl peroxide is a topical (applied to the skin) antibiotic. —Alex Yampolsky, Verywell Health, 11 Oct. 2024

The peroxide will act as a disinfectant to remove mold and mildew in addition to soap scum. —Mary Cornetta, Better Homes & Gardens, 4 Nov. 2024

Verb

Freshly peroxided, Mock headed to the skatepark later that day. —Lauren Valenti, Vogue, 4 Feb. 2019

Adjective

The enamel-safe kit uses an LED light and peroxide gel, similar to laser whitening treatments at a dental office. —Kaitlin Gates, Better Homes & Gardens, 21 Nov. 2024

From greased mullets to peroxide pixies, Miley Cyrus is no stranger to a subversive hair moment. —Calin Van Paris, Vogue, 5 Feb. 2024

Word History

First Known Use

Noun

1804, in the meaning defined above

Verb

1899, in the meaning defined above

Adjective

1899, in the meaning defined above

Phrases Containing peroxide

• benzoyl peroxide
• bottle/bleached/peroxide blonde
• hydrogen peroxide

Kids Definition

peroxide

noun

per·​ox·​ide

pə-ˈräk-ˌsīd

: an oxide containing a high proportion of oxygen

especially : hydrogen peroxide

Medical Definition

peroxide

noun

per·​ox·​ide pə-ˈräk-ˌsīd 

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