significant digits

18 LETTERS · STARTS WITH S

significant digits is a valid 18-letter word worth 25 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1I1G2N1I1F4I1C3A1N1T1D2I1G2I1T1S1

1 + 1 + 2 + 1 + 1 + 4 + 1 + 3 + 1 + 1 + 1 + 0 + 2 + 1 + 2 + 1 + 1 + 1 =25 PTS

DOUBLE WORD → 50TRIPLE WORD → 75

MEANING

What does significant digits mean?