expansion slide

15 LETTERS · STARTS WITH E

expansion slide is a valid 15-letter word worth 24 points in Scrabble and 28 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

E1X8P3A1N1S1I1O1N1S1L1I1D2E1

1 + 8 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 2 + 1 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does expansion slide mean?