# triiodothyronine

> English word · Noun

## Definitions
1. A thyroid hormone, with the chemical formula C₁₅H₁₂I₃NO₄, affecting almost every process in the body, including body temperature, growth, and heart rate.

## Etymology
From tri- + iodothyronine.

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