undiffractive

13 LETTERS · 4 SYLLABLES · STARTS WITH U

undiffractive is a valid 13-letter word worth 25 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

U1N1D2I1F4F4R1A1C3T1I1V4E1

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

DOUBLE WORD → 50TRIPLE WORD → 75

MEANING

What does undiffractive mean?