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hypothyroidism hy·po·thy·roid·ism (hī'pō-thī'roi-dĭz'əm)
Insufficient production of thyroid hormones.
A pathological condition resulting from thyroid insufficiency, which may lead to cretinism or myxedema.
An abnormality of the thyroid gland characterized by insufficient production of thyroid hormone, which can result in a decreased basal metabolic rate, causing weight gain and fatigue. Compare hyperthyroidism.
a deficiency in hormone production by the thyroid gland.