interlaced scanning

19 LETTERS · STARTS WITH I

interlaced scanning is a valid 19-letter word worth 24 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1N1T1E1R1L1A1C3E1D2S1C3A1N1N1I1N1G2

1 + 1 + 1 + 1 + 1 + 1 + 1 + 3 + 1 + 2 + 0 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 2 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does interlaced scanning mean?