nonperceptibility

17 LETTERS · 7 SYLLABLES · STARTS WITH N

nonperceptibility is a valid 17-letter word worth 28 points in Scrabble and 34 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

N1O1N1P3E1R1C3E1P3T1I1B3I1L1I1T1Y4

1 + 1 + 1 + 3 + 1 + 1 + 3 + 1 + 3 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 4 =28 PTS

DOUBLE WORD → 56TRIPLE WORD → 84

MEANING

What does nonperceptibility mean?