THORON is a playable word

thoron Scrabble® Dictionary

noun
pl. thorons
a radioactive isotope of radon
41 Playable Words can be made from "THORON"
   2-Letter Words (6 found)
   3-Letter Words (20 found)
   4-Letter Words (9 found)
   5-Letter Words (5 found)
   6-Letter Words (1 found)