Search Result for "greyness": 
Wordnet 3.0

NOUN (1)

1. a neutral achromatic color midway between white and black;
[syn: gray, grayness, grey, greyness]



The Collaborative International Dictionary of English v.0.48:

greyness \greyness\ n.
   a neutral achromatic color midway between while and black.

   Syn: gray, grayness, grey.
        [WordNet 1.5]


WordNet (r) 3.0 (2006):

greyness
    n 1: a neutral achromatic color midway between white and black
         [syn: gray, grayness, grey, greyness]