thyroid hormone thyroid gland • thyroid vein · · · Info · Definitions · Characters · · thyroid hormone · · Text Common · · Latin · · Scripts 15 · · Length 4 · · Syllables Definitions · · · (noun) any of several closely related compounds that are produced by the thyroid gland and are active metabolically. Synonyms: thyroid hormone. · · Noun Definition 1 Characters · · space U+0020 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D 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 y latin small letter y U+0079