particle separation

19 LETTERS · STARTS WITH P

particle separation is a valid 19-letter word worth 24 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3A1R1T1I1C3L1E1S1E1P3A1R1A1T1I1O1N1

3 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 0 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does particle separation mean?