# mesyl

> English word · Noun · IPA /ˈmiː.sʌɪl/

## Definitions
1. The univalent radical CH₃SO₂– of methanesulfonic acid.

## Etymology
Contraction of methylsulfonyl.

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