triple superphosphate

21 LETTERS · STARTS WITH T

triple superphosphate is a valid 21-letter word worth 34 points in Scrabble and 38 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

T1R1I1P3L1E1S1U1P3E1R1P3H4O1S1P3H4A1T1E1

1 + 1 + 1 + 3 + 1 + 1 + 0 + 1 + 1 + 3 + 1 + 1 + 3 + 4 + 1 + 1 + 3 + 4 + 1 + 1 + 1 =34 PTS

DOUBLE WORD → 68TRIPLE WORD → 102

MEANING

What does triple superphosphate mean?