# T3 vs TM

> English confusable word pair

## The two words

### T3
*noun · IPA /ˌtiːˈθɹiː/ · frequency rank #25,607*
Abbreviation of triiodothyronine.

### TM
*symbol · frequency rank #12,699*
trademark

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/t3-vs-tm