t 1 r 1 i 1 i 1 o 1 d 2 o 1 t 1 h 4 y 4 r 1 o 1 n 1 i 1 n 1 e 1 s 1
17 letters · 24 points in Scrabble
Meaning
noun 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