hyperthyroidism
noun/ˌhaɪpəˈθaɪrɔɪdɪzəm/
/ˌhaɪpərˈθaɪrɔɪdɪzəm/
[uncountable] (medical)- a condition in which the thyroid is too active, making the heart and other body systems function too fast
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hyperthyroidism