thyroxine: Meaning and Definition of


Pronunciation: (thī-rok'sēn, -sin), [key]
— n.
  1. the thyroid gland hormone that regulates the metabolic rate of the body.
  2. a commercial form of this compound, obtained from the thyroid glands of animals or synthesized, used in the treatment of hypothyroidism. Symbol: T
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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