linear system

13 LETTERS · STARTS WITH L

linear system is a valid 13-letter word worth 17 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

L1I1N1E1A1R1S1Y4S1T1E1M3

1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 1 + 1 + 1 + 3 =17 PTS

DOUBLE WORD → 34TRIPLE WORD → 51

MEANING

What does linear system mean?