columnar structure

18 LETTERS · STARTS WITH C

columnar structure is a valid 18-letter word worth 23 points in Scrabble and 31 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
C3O1L1U1M3N1A1R1S1T1R1U1C3T1U1R1E1
3 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 =23 PTS
DOUBLE WORD → 46TRIPLE WORD → 69
MEANING

What does columnar structure mean?

1