DIDYMIUMS is a playable word

didymium Scrabble® Dictionary

noun
pl. didymiums
a mixture of rare-earth elements
50 Playable Words can be made from "DIDYMIUMS"
   2-Letter Words (9 found)
   3-Letter Words (19 found)
   4-Letter Words (12 found)
   5-Letter Words (7 found)
   6-Letter Words (1 found)
   8-Letter Words (1 found)
   9-Letter Words (1 found)