indicator diagram

17 LETTERS · STARTS WITH I

indicator diagram is a valid 17-letter word worth 23 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1N1D2I1C3A1T1O1R1D2I1A1G2R1A1M3

1 + 1 + 2 + 1 + 3 + 1 + 1 + 1 + 1 + 0 + 2 + 1 + 1 + 2 + 1 + 1 + 3 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does indicator diagram mean?