a crystalline hormone, CHINO, secreted by the thyroid gland, that influences the rate of general metabolic activity: used medically, esp. to treat hypothyroidism
Origin of triiodothyroninetri- + iodo- + thyr(o)- + -ine
A thyroid hormone, C15H12I3NO4, similar to thyroxine but more potent, used in the treatment of hypothyroidism.
Origin of triiodothyroninetri– + iodo– + thyronine, an amino acid (thyr(o)– + –on(e) + –ine2).
(countable and uncountable, plural triiodothyronines)
tri- +"Ž iodothyronine