rarefication

12 LETTERS · 5 SYLLABLES · STARTS WITH R

rarefication is a valid 12-letter word worth 17 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1A1R1E1F4I1C3A1T1I1O1N1

1 + 1 + 1 + 1 + 4 + 1 + 3 + 1 + 1 + 1 + 1 + 1 =17 PTS

DOUBLE WORD → 34TRIPLE WORD → 51

MEANING

What does rarefication mean?