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Short "hint"

n. - Thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity.

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Usage examples (35)
  • Normally, the inactive T4 is converted inside the cell to the active thyroid hormone called triiodothyronine (also known as T3).
  • When T4 reaches target cells, it is converted to triiodothyronine (T3).
  • The thyroid gland secretes two main hormones, thyroxine and triiodothyronine, into the bloodstream.
  • Iodine is required to make the thyroid's two principal products -- thyroxine (T4) and triiodothyronine (T3), generally known collectively as "thyroid hormone."
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