achromatic colour

NOUN
17 LETTERS · STARTS WITH A

achromatic colour is a valid 17-letter word worth 27 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
A1C3H4R1O1M3A1T1I1C3C3O1L1O1U1R1
1 + 3 + 4 + 1 + 1 + 3 + 1 + 1 + 1 + 3 + 0 + 3 + 1 + 1 + 1 + 1 + 1 =27 PTS
DOUBLE WORD → 54TRIPLE WORD → 81
MEANING

What does achromatic colour mean?

NOUN · 1 SENSE
1

A color lacking hue; white or grey or black.