sequential system

17 LETTERS · STARTS WITH S

sequential system is a valid 17-letter word worth 30 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1E1Q10U1E1N1T1I1A1L1S1Y4S1T1E1M3

1 + 1 + 10 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 1 + 1 + 1 + 3 =30 PTS

DOUBLE WORD → 60TRIPLE WORD → 90

MEANING

What does sequential system mean?