2 definitions
for greyness
From 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]
From WordNet (r) 2.0 :
greyness
n : a neutral achromatic color midway between white and black
[syn: gray, grayness, grey]