index plane

11 LETTERS · STARTS WITH I

index plane is a valid 11-letter word worth 20 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1N1D2E1X8P3L1A1N1E1

1 + 1 + 2 + 1 + 8 + 0 + 3 + 1 + 1 + 1 + 1 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does index plane mean?