hardness
hord nuhs
- n the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale
- n a quality of water that contains dissolved mineral salts that prevent soap from lathering
the costs of reducing hardness depend on the relative amounts of calcium and magnesium compounds that are present - n devoid of passion or feeling; hardheartedness
- n the quality of being difficult to do
he assigned a series of problems of increasing hardness - n excessive sternness
- Diamonds test the hardness of alloys in razor-blade and ice-skate factories.
- The hardness of the blades makes them less flexible, however, so they aren't so hot for cutting that requires maneuverability, such as carving.
- The result was notice-me behavior -- eating asparagus with her fingers, while wearing gloves, at a White House dinner -- and a hardness to anyone who seemed less tough than she.