summability

11 LETTERS · 5 SYLLABLES · STARTS WITH S

summability is a valid 11-letter word worth 20 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1U1M3M3A1B3I1L1I1T1Y4

1 + 1 + 3 + 3 + 1 + 3 + 1 + 1 + 1 + 1 + 4 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does summability mean?