cathode particle

16 LETTERS · STARTS WITH C

cathode particle is a valid 16-letter word worth 25 points in Scrabble and 28 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3A1T1H4O1D2E1P3A1R1T1I1C3L1E1

3 + 1 + 1 + 4 + 1 + 2 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 3 + 1 + 1 =25 PTS

DOUBLE WORD → 50TRIPLE WORD → 75

MEANING

What does cathode particle mean?