hardnessˈhɑrd nɪs
English Definitions:
hardness (noun)
the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale
hardness (noun)
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"
unfeelingness, callousness, callosity, hardness, insensibility (noun)
devoid of passion or feeling; hardheartedness
hardness, ruggedness (noun)
the quality of being difficult to do
"he assigned a series of problems of increasing hardness"; "the ruggedness of his exams caused half the class to fail"
severity, severeness, harshness, rigor, rigour, rigorousness, rigourousness, inclemency, hardness, stiffness (noun)
excessive sternness
"severity of character"; "the harshness of his punishment was inhuman"; "the rigors of boot camp"
hardness (Noun)
The quality of being hard.
hardness (Noun)
An instance of this quality; hardship.
Hardness
In materials science, hardness (antonym: softness) is a measure of the resistance to localized plastic deformation induced by either mechanical indentation or abrasion. In general, different materials differ in their hardness; for example hard metals such as titanium and beryllium are harder than soft metals such as sodium and metallic tin, or wood and common plastics. Macroscopic hardness is generally characterized by strong intermolecular bonds, but the behavior of solid materials under force is complex; therefore, hardness can be measured in different ways, such as scratch hardness, indentation hardness, and rebound hardness. Hardness is dependent on ductility, elastic stiffness, plasticity, strain, strength, toughness, viscoelasticity, and viscosity. Common examples of hard matter are ceramics, concrete, certain metals, and superhard materials, which can be contrasted with soft matter.
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"hardness." Kamus.net. STANDS4 LLC, 2024. Web. 23 Apr. 2024. <https://www.kamus.net/english/hardness>.
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