the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale
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
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)
"severity of character"; "the harshness of his punishment was inhuman"; "the rigors of boot camp"
The quality of being hard.
An instance of this quality; hardship.
Origin: From hard + -ness
the quality or state of being hard, literally or figuratively
the cohesion of the particles on the surface of a body, determined by its capacity to scratch another, or be itself scratched;-measured among minerals on a scale of which diamond and talc form the extremes
the peculiar quality exhibited by water which has mineral salts dissolved in it. Such water forms an insoluble compound with soap, and is hence unfit for washing purposes
Origin: [AS. heardness.]
U.S. National Library of Medicine
The mechanical property of material that determines its resistance to force. HARDNESS TESTS measure this property.
The numerical value of hardness in Chaldean Numerology is: 1
The numerical value of hardness in Pythagorean Numerology is: 7
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Translations for hardness
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