# Meerwein's salt

> English word · Proper noun

## Definitions
1. Trimethyloxonium tetrafluoroborate, a strong methylating agent.

## Etymology
After its discoverer, Hans Meerwein.

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