# TDI vs tri

> English confusable word pair

## The two words

### TDI
*noun · frequency rank #49,091*
Abbreviation of toluene diisocyanate.

### tri
*noun · IPA /tɹaɪ/ · frequency rank #11,142*
triathlon

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-09-03.
Canonical page: https://plainspell.com/en/vs/tdi-vs-tri