transposition cipher

20 LETTERS · STARTS WITH T

transposition cipher is a valid 20-letter word worth 28 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

T1R1A1N1S1P3O1S1I1T1I1O1N1C3I1P3H4E1R1

1 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 3 + 4 + 1 + 1 =28 PTS

DOUBLE WORD → 56TRIPLE WORD → 84

MEANING

What does transposition cipher mean?