Meanings
nountriiodothyronine (countable and uncountable, plural triiodothyronines, abbreviation T3)
plural triiodothyronines · abbreviation T3
- countableuncountablebiochemistryA thyroid hormone, with the chemical formula C₁₅H₁₂I₃NO₄, affecting almost every process in the body, including body temperature, growth, and heart rate.
Synonyms & antonyms
nounthyroid 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
Similar
Broader
Also see
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
Translations
Bulgarian трийодотиронин
- трийодотиронин (trijodotironin)thyroid hormone
Italian triiodotironina
- triiodotironinathyroid hormone
Portuguese triiodotironina
- triiodotironinathyroid hormone
Cite this entry
APA
triiodothyronine. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/triiodothyronine
MLA
“triiodothyronine.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/triiodothyronine. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “triiodothyronine,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/triiodothyronine.
Source: triiodothyronine on Wiktionary, CC BY-SA 4.0.