triiodothyronine

A thyroid hormone, C₁₅H₁₂I₃NO₄, similar to thyroxine but more potent, used in the treatment of hypothyroidism.

The most powerful thyroid hormone, affecting almost every process in the body, including body temperature, growth, and heart rate.

thyroid hormone similar to thyroxine but with one less iodine atom per molecule and produced in smaller quantity; exerts the same biological effects as thyroxine but is more potent and briefer