# thionol

> English word · Noun

## Definitions
1. A red or violet dyestuff with a greenish metallic lustre, produced by the chemical dehydration of thionine.

## Etymology
From thionine + -ol.

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