pyrosulphuric acid

18 LETTERS · STARTS WITH P

pyrosulphuric acid is a valid 18-letter word worth 32 points in Scrabble and 37 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3Y4R1O1S1U1L1P3H4U1R1I1C3A1C3I1D2

3 + 4 + 1 + 1 + 1 + 1 + 1 + 3 + 4 + 1 + 1 + 1 + 3 + 0 + 1 + 3 + 1 + 2 =32 PTS

DOUBLE WORD → 64TRIPLE WORD → 96

MEANING

What does pyrosulphuric acid mean?