staircase curve

15 LETTERS · STARTS WITH S

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

SCRABBLE WORDS WITH FRIENDS

S1T1A1I1R1C3A1S1E1C3U1R1V4E1

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

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does staircase curve mean?