SYMBIONS is a playable word

symbion Scrabble® Dictionary

noun
pl. symbions
symbiont
106 Playable Words can be made from "SYMBIONS"
   2-Letter Words (17 found)
   5-Letter Words (11 found)
   6-Letter Words (4 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)