IRIDIUM is a playable word

iridium Scrabble® Dictionary

noun
pl. iridiums
a metallic element
22 Playable Words can be made from "IRIDIUM"
   2-Letter Words (4 found)
   3-Letter Words (10 found)
   4-Letter Words (5 found)
   5-Letter Words (2 found)
   7-Letter Words (1 found)