CATHODE is a playable word

cathode Scrabble® Dictionary

noun
pl. cathodes
a negatively charged electrode
(adjective) cathodal, cathodic
123 Playable Words can be made from "CATHODE"
   2-Letter Words (19 found)
   5-Letter Words (12 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)