thyroxin thyrotropin-releasing hormone • thyroxine · · · Info · Definitions · Synonyms · Characters · · thyroxin · · Text Latin · · Script 8 · · Length 3 · · Syllables Definitions · · · (noun) hormone produced by the thyroid glands to regulate metabolism by controlling the rate of oxidation in cells. Synonyms: thyroxine, tetraiodothyronine, T. Example: "Thyroxine is 65% iodine." · · Noun Definition 1 Synonyms · · · thyroxine · · Synonym 1 tetraiodothyronine · · Synonym 2 t · · Synonym 3 Characters · · h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 x latin small letter x U+0078 y latin small letter y U+0079