# thoron

> English word · Noun

## Definitions
1. Radon-220 (22086Rn; symbol Tn), an isotope of radon
2. Alternative form of thorin (“C₁₆H₁₁AsN₂O₁₀S₂.₂Na”).

## Etymology
Contraction of thorium emanation.

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