# peroxide

> English word · Noun · IPA /pəˈrɒksʌɪd/ · frequency rank #24,541

## Definitions
1. A divalent radical or anion containing two oxygen atoms linked by a covalent bond; any substance containing this group yields hydrogen peroxide when treated with an acid.
2. Hydrogen peroxide, especially when in an aqueous solution used as a bleach.
3. Any compound containing the functional group R-O-O-R'.

## Etymology
From per- + oxide.

## Easily confused with
- **provide** (https://plainspell.com/en/vs/peroxide-vs-provide)

## Common misspellings (11)
`eproxide`, `peorxide`, `peroixde`, `peroxdie`, `peroxidde`, `peroxied`, `peroxxide`, `perroxide`, `perxoide`, `pperoxide`, `preoxide`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/peroxide