monophonic system

17 LETTERS · STARTS WITH M

monophonic system is a valid 17-letter word worth 30 points in Scrabble and 34 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

M3O1N1O1P3H4O1N1I1C3S1Y4S1T1E1M3

3 + 1 + 1 + 1 + 3 + 4 + 1 + 1 + 1 + 3 + 0 + 1 + 4 + 1 + 1 + 1 + 3 =30 PTS

DOUBLE WORD → 60TRIPLE WORD → 90

MEANING

What does monophonic system mean?