# allyl

> English word · Noun · IPA /ˈælaɪl/ · frequency rank #84,971

## Definitions
1. The univalent radical, CH₂=CH-CH₂-, existing especially in oils of garlic and mustard.

## Etymology
From Latin allium (“garlic”) + -yl.

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