# carbonyl

> English word · Noun · IPA /ˈkɑː(ɹ)bənɪl/ · frequency rank #49,243

## Definitions
1. A divalent functional group, (-CO-), characteristic of aldehydes, ketones, carboxylic acids, amides, carboxylic acid anhydrides, carbonyl halides, esters and others.
2. Any compound of a metal with carbon monoxide, such as nickel carbonyl, Ni(CO)₄.

## Etymology
From carbon + -yl.

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

## Common misspellings (13)
`acrbonyl`, `cabronyl`, `carbbonyl`, `carbnoyl`, `carbonly`, `carbonnyl`, `carbonyll`, `carbonyyl`, `carboynl`, `carobnyl`, `carrbonyl`, `ccarbonyl`, `crabonyl`

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