Definitions for hardnessˈhɑrd nɪs

This page provides all possible meanings and translations of the word hardness

Random House Webster's College Dictionary

hard•nessˈhɑrd nɪs(n.)

  1. the state or quality of being hard.

  2. that quality in water that is imparted by the presence of dissolved salts, esp. calcium sulfate or bicarbonate.

    Category: Chemistry

  3. the comparative ability of a substance to scratch or be scratched by another.

    Category: Mineralogy

  4. the measured resistance of a metal to indention, abrasion, deformation, or machining.

    Category: Metallurgy

Origin of hardness:

bef. 900

Princeton's WordNet

  1. hardness(noun)

    the property of being rigid and resistant to pressure; not easily scratched; measured on Mohs scale

  2. 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"

  3. unfeelingness, callousness, callosity, hardness, insensibility(noun)

    devoid of passion or feeling; hardheartedness

  4. 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"

  5. 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"


  1. hardness(Noun)

    The quality of being hard.

  2. hardness(Noun)

    An instance of this quality; hardship.

  3. Origin: From hard + -ness

Webster Dictionary

  1. Hardness(noun)

    the quality or state of being hard, literally or figuratively

  2. Hardness(noun)

    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. Hardness(noun)

    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

U.S. National Library of Medicine

  1. Hardness

    The mechanical property of material that determines its resistance to force. HARDNESS TESTS measure this property.

Translations for hardness

Kernerman English Multilingual Dictionary


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