# trihydrogen

> English word · Noun

## Definitions
1. A cation triangular molecule composed of three hydrogen atoms, or matter composed of such molecules. Symbol: H₃⁺.

## Etymology
From tri- + hydrogen.

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