depth indicator

15 LETTERS · STARTS WITH D

depth indicator is a valid 15-letter word worth 23 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

D2E1P3T1H4I1N1D2I1C3A1T1O1R1

2 + 1 + 3 + 1 + 4 + 0 + 1 + 1 + 2 + 1 + 3 + 1 + 1 + 1 + 1 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does depth indicator mean?