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Meaning of hyperthyroidism

hy•per•thy•roid•ism

Pronunciation: (hī"pur-thī'roi-diz"um), [key]
— n. Pathol.
  1. overactivity of the thyroid gland.
  2. a condition resulting from this, characterized by increased metabolism and exophthalmos.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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