hardness

Noun
  1. The property of being rigid and resistant to pressure;
    Not easily scratched;
    Measured on Mohs scale (synset 104945025)
    tells us about:
    • hard - resisting weight or pressure
    • soft - yielding readily to pressure or weight
    is a type of: body, consistence, consistency, substance - the property of holding together and retaining its shape
    subtypes:
  2. A quality of water that contains dissolved mineral salts that prevent soap from lathering (synset 104944764)
    "the costs of reducing hardness depend on the relative amounts of calcium and magnesium compounds that are present"
    is a type of: quality - an essential and distinguishing attribute of something or someone
  3. Devoid of passion or feeling;
    Hardheartedness (synset 104851856)
    is a type of: insensitiveness, insensitivity - the inability to respond to affective changes in your interpersonal environment
    subtypes: dullness - lack of sensibility
    same as: callosity, callousness, insensibility, unfeelingness
  4. The quality of being difficult to do (synset 104717864)
    "he assigned a series of problems of increasing hardness"; "the ruggedness of his exams caused half the class to fail"
    is a type of: difficultness, difficulty - the quality of being difficult
    same as: ruggedness
  5. Excessive sternness (synset 104647089)
    "severity of character"; "the harshness of his punishment was inhuman"; "the rigors of boot camp"
    is a type of: sternness, strictness - uncompromising resolution
    same as: harshness, inclemency, rigor, rigorousness, rigour, rigourousness, severeness, severity, stiffness

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