Triiodothyronines

Part of speech: noun

Definitions

1. A group of thyroid hormone compounds that include three iodine atoms in their molecular structure and play significant roles in regulating metabolism
2. These hormonal substances are derivatives of thyroxine that influence various physiological processes by modulating metabolic rates and energy consumption
3. This class of hormones, characterized by their three iodine atoms, impacts growth, development, and overall metabolic function in the body

Etymology: "Triiodothyronines" is the plural of "triiodothyronine", a compound built from the prefix "tri-" (three) and "iodothyronine", the name of the parent chemical family. Each molecule of this hormone carries three iodine atoms attached to a thyronine backbone, which is why the name reads like a systematic chemical formula spelled out in full. The "thyro-" element points to the thyroid gland, where these hormones are produced, and "-ine" is the standard chemical suffix for amines and related nitrogen-containing compounds. Together the parts describe the molecule's structure: iodine atoms, a thyronine core, and a count of three. The plural form simply applies to the hormone's two main active varieties, which differ in how many iodine atoms they carry.

Synonyms: T3 hormones, thyroid hormones, triiodothyronine, thyroid-stimulating hormones, metabolic hormones