space variation

15 LETTERS · STARTS WITH S

space variation is a valid 15-letter word worth 21 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1P3A1C3E1V4A1R1I1A1T1I1O1N1

1 + 3 + 1 + 3 + 1 + 0 + 4 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does space variation mean?