Word.ws English Dictionary

mesyl

UK/ˈmiː.sʌɪl/US/ˈmɛs.əl/

mesyl noun: the univalent radical CH₃SO₂– of methanesulfonic acid. Also the obsolete form of mesel.

mesyl: the univalent radical CH₃SO₂– of methanesulfonic acid
Image: Codc, Public domain, via Wikimedia Commons

Noun

mesyl (plural mesyls)

  1. (especially, in-compounds) The univalent radical CH₃SO₂– of methanesulfonic acid.

Also used as

mesyl is also the obsolete form of mesel.

Forms of mesyl

pluralmesyls

Origin of mesyl

Contraction of methylsulfonyl.

From Middle English mesel (“leprous, leper”), from Norman mesel (“leprous, leper”), from Old French mesel (“leprous, leper”), from Late Latin misellus (“leper”), from miser (“wretched, wretch”) + -ellus (“-elle”). Doublet of measles.

Words formed from mesyl

Words that rhyme with mesyl

Questions about mesyl

What does mesyl mean?
Mesyl means the univalent radical CH₃SO₂– of methanesulfonic acid.
What part of speech is mesyl?
Mesyl is a noun.
How do you pronounce mesyl?
Mesyl is pronounced /ˈmiː.sʌɪl/ (UK).
What is the plural of mesyl?
The plural of mesyl is mesyls.

Words near mesyl in the dictionary

  1. mesugakis
  2. mesulergine
  3. mesulfen
  4. mesuol
  5. mesuximide
  6. mesyl
  7. mesylate
  8. mesylates
  9. mesyls
  10. Meszaros
  11. Meszaroses

Source and license

Adapted from Wiktionary: mesyl (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “mesyl.” Word.ws, https://word.ws/mesyl. Based on Wiktionary, CC BY-SA 4.0.