an underactive thyroid gland; a glandular disorder resulting from insufficient production of thyroid hormones
hypothyroidism详细解释
hy.po.thy.roid.ism n.（名词）Insufficient production of thyroid hormones.甲状腺功能减退：甲状腺激素的产生不足A pathological condition resulting from severe thyroid insufficiency, which may lead to cretinism or myxedema.甲低：严重的甲状腺不足引起的病理状态，它可能导致愚侏病或粘液水肿
