nondistinguishableness

22 LETTERS · 7 SYLLABLES · STARTS WITH N

nondistinguishableness is a valid 22-letter word worth 29 points in Scrabble and 36 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

N1O1N1D2I1S1T1I1N1G2U1I1S1H4A1B3L1E1N1E1S1S1

1 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 1 + 2 + 1 + 1 + 1 + 4 + 1 + 3 + 1 + 1 + 1 + 1 + 1 + 1 =29 PTS

DOUBLE WORD → 58TRIPLE WORD → 87

MEANING

What does nondistinguishableness mean?