nonluminosity

13 LETTERS · 6 SYLLABLES · STARTS WITH N

nonluminosity is a valid 13-letter word worth 18 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

N1O1N1L1U1M3I1N1O1S1I1T1Y4

1 + 1 + 1 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 4 =18 PTS

DOUBLE WORD → 36TRIPLE WORD → 54

MEANING

What does nonluminosity mean?