00:10
00:09
00:08
00:07
00:06
00:05
00:04
00:03
00:02
00:01
| an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language. |
| a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S. |
hypothyroidism hy·po·thy·roid·ism (hī'pō-thī'roi-dĭz'əm)
n.
Insufficient production of thyroid hormones.
A pathological condition resulting from thyroid insufficiency, which may lead to cretinism or myxedema.
| hypothyroidism (hī'pō-thī'roi-dĭz'əm) Pronunciation Key
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. |
hypothyroidism
a deficiency in hormone production by the thyroid gland.
Learn more about hypothyroidism with a free trial on Britannica.com.