hardnesses
noun(hard-ness)
the quality or state of being hard
hardnesses
noun(hard-ness)
the cohesion of the particles on the surface of a mineral as determined by its capacity to scratch another or be itself scratched
hardnesses
noun(hard-ness)
resistance of metal to indentation under a static load or to scratching
hardnesses
noun(hard-ness)
the hardness of a metal or alloy measured by hydraulically pressing a hard ball under a standard load into the specimen