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hardness

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hardness

Main Entry:: hard·ness
Pronunciation:: \-nəs\
Function:: noun
Date:: before 12th century

1: the quality or state of being hard2 a: the cohesion of the particles on the surface of a mineral as determined by its capacity to scratch another or be itself scratched — compare mohs' scale b: resistance of metal to indentation under a static load or to scratching

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