Is “Hyperthyroidism” a Scrabble word?
Yes
HYPERTHYROIDISM
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Hyperthyroidism
/ˌhaɪ̯pəˈθaɪ̯ɹɔɪ̯ˌdɪzəm/
noun
1.The excessive production of hormones by the thyroid.
2.The pathological condition resulting from these excess hormones.