expansion engine

16 LETTERS · STARTS WITH E

expansion engine is a valid 16-letter word worth 25 points in Scrabble and 31 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

E1X8P3A1N1S1I1O1N1E1N1G2I1N1E1

1 + 8 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 2 + 1 + 1 + 1 =25 PTS

DOUBLE WORD → 50TRIPLE WORD → 75

MEANING

What does expansion engine mean?