FERMION is a playable word

fermion Scrabble® Dictionary

noun
pl. fermions
a type of atomic particle
97 Playable Words can be made from "FERMION"
   2-Letter Words (19 found)
   3-Letter Words (32 found)
   5-Letter Words (10 found)
   6-Letter Words (2 found)
   7-Letter Words (1 found)