# methionic acid

> English word · Noun

## Definitions
1. The disulfonic acid of methane, prepared by treatment of methanesulfonic acid with oleum. CH₂.(SO₃H)₂.

## Etymology
methyl + thionic

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