expansion wave

14 LETTERS · STARTS WITH E

expansion wave is a valid 14-letter word worth 28 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

E1X8P3A1N1S1I1O1N1W4A1V4E1

1 + 8 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 4 + 1 + 4 + 1 =28 PTS

DOUBLE WORD → 56TRIPLE WORD → 84

MEANING

What does expansion wave mean?