PROTOXID is a playable word

protoxid Scrabble® Dictionary

noun
pl. protoxids
an oxide
83 Playable Words can be made from "PROTOXID"
   2-Letter Words (13 found)
   3-Letter Words (28 found)
   5-Letter Words (8 found)
   6-Letter Words (4 found)
   8-Letter Words (1 found)