hyperthyroidism hyperthyroid • hyperthyroidization · · · Info · Definitions · Synonyms · Antonyms · Characters · · hyperthyroidism · · Text Latin · · Script 15 · · Length 6 · · Syllables Definitions · · · (noun) an overactive thyroid gland; pathologically excessive production of thyroid hormones or the condition resulting from excessive production of thyroid hormones. Synonyms: thyrotoxicosis. · · Noun Definition 1 Synonyms · · · thyrotoxicosis · · Synonym 1 Antonyms · · · hypothyroidism · · Antonym 0 Characters · · 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 o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 y latin small letter y U+0079