# tritium

> English word · Noun · IPA /ˈtɹɪt.i.əm/ · frequency rank #43,974

## Definitions
1. A radioactive isotope of the element hydrogen (symbol T, ³H or 31H) having one proton and two neutrons.
2. An atom of this isotope.

## Etymology
Borrowed from New Latin tritium, from Ancient Greek τρίτος (trítos, “third”) + New Latin -ium.

## Common misspellings (10)
`rtitium`, `tirtium`, `triitum`, `tritimu`, `tritiumm`, `trittium`, `trituim`, `trritium`, `trtiium`, `ttritium`

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