thy·rox·ine (thī-rŏksēn′, -sĭn) also thy·rox·in (-rŏksĭn)
n. Abbr. T4
An iodine-containing hormone, C15H11I4NO4, produced by the thyroid gland, that increases the rate of cell metabolism and regulates growth. A synthetic form is used in the treatment of thyroid disorders.
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Indo-European & Semitic Roots Appendices
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