sulfate process

15 LETTERS · STARTS WITH S

sulfate process is a valid 15-letter word worth 21 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1U1L1F4A1T1E1P3R1O1C3E1S1S1

1 + 1 + 1 + 4 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 3 + 1 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does sulfate process mean?