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| hard·ness [ hrdnəss ] |
noun |
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| Definition: |
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1. firmness, solidity, and compactness: the state or quality of being firm, solid, and compact
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2. unyielding toughness: the state or quality of being tough and unyielding
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3. chemistry water quality: the degree to which water contains mineral salts
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4. metallurgy measurements degree to which metal is hard: the degree to which a metal may be scratched, abraded, indented, or machined, measured according to any of several scales
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