# hydroxyl

> English word · Noun · frequency rank #42,190

## Definitions
1. A univalent radical or functional group (–OH) in organic chemistry; present in alcohols, phenols, carboxylic acids and certain other classes of compounds.

## Etymology
From a blend of hydrogen + oxygen + -yl.

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

## Common misspellings (14)
`hdyroxyl`, `hhydroxyl`, `hyddroxyl`, `hydorxyl`, `hydroxly`, `hydroxxyl`, `hydroxyll`, `hydroxyyl`, `hydroyxl`, `hydrroxyl`, `hydrxoyl`, `hyrdoxyl`, `hyydroxyl`, `yhdroxyl`

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