noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A thyroid hormone, with the chemical formula C₁₅H₁₂I₃NO₄, affecting almost every process in the body, including body temperature, growth, and heart rate. countable, uncountable
2. 2
   thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer wordnet

Synonyms

All synonyms

liothyroninet

Etymology

From tri- + iodothyronine.

Related phrases

heart rate

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.