CATHODIC is a playable word

cathode Scrabble® Dictionary

noun
pl. cathodes
a negatively charged electrode
(adjective) cathodal, cathodic
105 Playable Words can be made from "CATHODIC"
   2-Letter Words (17 found)
   6-Letter Words (3 found)
   7-Letter Words (3 found)
   8-Letter Words (1 found)