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1. (n.) hardness
the state or quality of being hard.
2. hardness
that quality in water that is imparted by the presence of dissolved salts, esp. calcium sulfate or bicarbonate.
3. hardness
the comparative ability of a substance to scratch or be scratched by another.
4. hardness
the measured resistance of a metal to indention, abrasion, deformation, or machining.
Etymology: (bef. 900)
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| Definition of 'HARDNESS' |
Princeton's WordNet |
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1. (noun) hardness
the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale
2. (noun) hardness
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"
3. (noun) unfeelingness, callousness, callosity, hardness, insensibility
devoid of passion or feeling; hardheartedness
4. (noun) hardness, ruggedness
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"
5. (noun) severity, severeness, harshness, rigor, rigour, rigorousness, rigourousness, inclemency, hardness, stiffness
excessive sternness
"severity of character"; "the harshness of his punishment was inhuman"; "the rigors of boot camp"
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| Definition of 'HARDNESS' |
Webster Dictionary |
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1. (noun) HARDNESS
the quality or state of being hard, literally or figuratively
2. (noun) HARDNESS
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
3. (noun) HARDNESS
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
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| Definition of 'HARDNESS' |
U.S. National Library of Medicine |
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1. HARDNESS
The mechanical property of material that determines its resistance to force. HARDNESS TESTS measure this property.
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Sense: to make or become hard
Don't touch the toffee till it hardens; Try not to harden your heart against him.
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 Afrikaans: hardheid |
 Arabic: صُعوبَه، صلابَه، قَسْوَه |
 Bulgarian: твърдост |
 Brazilian: dureza |
 Czech: tvrdost |
 German: die Härte |
 Danish: hårdhed; strenghed |
 Greek: σκληρότητα |
 Spanish: dureza, firmeza |
 Estonian: karmus |
 Farsi: سختی |
 Finnish: kovuus |
 French: dureté |
 Hebrew: קוֹשִׁי |
 Hindi: कड़ापन |
 Croatian: tvrdoca, okrutnost |
 Hungarian: keménység |
 Indonesian: kekerasan |
 Icelandic: harka |
 Italian: durezza |
 Japanese: 堅さ |
 Korean: 단단함 |
 Lithuanian: kietumas, sunkumas |
 Latvian: cietība; grūtums; smagums |
 Malay: kekerasan |
 Dutch: hardheid |
 Norwegian: hardhet; strenghet |
 Polish: wytrzymałość, odporność |
 Persian: سختی |
 Pashto: كلكوالى |
 Portuguese: dureza |
 Romanian: duritate |
 Russian: твёрдость; жёсткость |
 Slovak: tvrdosť |
 Slovenian: trdota |
 Serbian: stvrdnutost |
 Swedish: hårdhet |
 Thai: ความแข็ง |
 Turkish: sertlik, katılık |
 Taiwanese: 硬度 |
 Ukrainian: твердість; міцність |
 Urdu: سختی |
 Vietnamese: sự cứng rắn |
 Chinese: 硬度 |
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Definitions of HARDNESS 
