Category:Iodothyrin

I`o*do*thy"rin, n. [Iodo- + thyro- + -in.] (Physiol. Chem.)

Defn: A peculiar substance obtained from the thyroid gland, containing from nine to ten per cent of iodine.

It is a very stable compound, and is believed to be active principle in thyroid extracts and in the internal secretion of the thyroid gland. It was originally called thyroiodin.