Clues for the word "HARDNESS"

We've had 3 crossword clues used for this word, and seen it 1 time in crosswords. It was last seen in Guardian Cryptic crossword on January 15, 2008.

Definition of hardness

n. - The quality or state of being hard, literally or figuratively.
n. - The cohesion of the particles on the surface of a body, determined by its capacity to scratch another, or be itself scratched;-measured among minerals on a scale of which diamond and talc form the extremes.
n. - The peculiar quality exhibited by water which has mineral salts dissolved in it. Such water forms an insoluble compound with soap, and is hence unfit for washing purposes.