FISSIONING is a playable word

fission Scrabble® Dictionary

verb
fissioned, fissioning, fissions
to split into parts
76 Playable Words can be made from "FISSIONING"
   2-Letter Words (12 found)
   3-Letter Words (20 found)
   5-Letter Words (11 found)
   6-Letter Words (4 found)
   7-Letter Words (5 found)
   8-Letter Words (1 found)
   10-Letter Words (1 found)