short extension

15 LETTERS · STARTS WITH S

short extension is a valid 15-letter word worth 24 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1H4O1R1T1E1X8T1E1N1S1I1O1N1

1 + 4 + 1 + 1 + 1 + 0 + 1 + 8 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does short extension mean?