# monoxide

> English word · Noun · IPA /məˈnɒksʌɪd/ · frequency rank #20,435

## Definitions
1. Any oxide containing a single oxygen atom in each molecule or formula unit.

## Etymology
Formed as mon- + oxide; compare the earlier dioxide, pentoxide, and tetroxide.

## Common misspellings (11)
`mmonoxide`, `mnooxide`, `monnoxide`, `monoixde`, `monoxdie`, `monoxidde`, `monoxied`, `monoxxide`, `monxoide`, `moonxide`, `omnoxide`

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