Hypothyroidism Definition
hīpō-thīroi-dĭzəm
noun
Deficient activity of the thyroid gland.
Webster's New World
The disorder resulting from this, characterized by a retarded rate of metabolism and resulting sluggishness, puffiness, etc.
Webster's New World
Antonyms:
Origin of Hypothyroidism
Coined some time between 1900 and 1905 from the prefix "hypo-" (meaning "under), the word "thyroid," and the suffix "-ism" (meaning "a system of").
From Wiktionary
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