particle counter

16 LETTERS · STARTS WITH P

particle counter is a valid 16-letter word worth 21 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3A1R1T1I1C3L1E1C3O1U1N1T1E1R1

3 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does particle counter mean?