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Hardness   /hˈɑrdnəs/   Listen
noun
Hardness  n.  
1.
The quality or state of being hard, literally or figuratively. "The habit of authority also had given his manners some peremptory hardness."
2.
(Min.) 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.
(Chem.) 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. Note: This quality is caused by the presence of calcium carbonate, causing temporary hardness which can be removed by boiling, or by calcium sulphate, causing permanent hardness which can not be so removed, but may be improved by the addition of sodium carbonate.






Collaborative International Dictionary of English 0.48








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"Hardness" Quotes from Famous Books



... frail body to and fro, and in a tremulous, plaintive chant told unto the gentle and gracious spirit of the waters all that Ootah had been, all that he had done for the tribe; of his prowess, of his love for her, of her own hardness, and how she had turned a deaf ear to his pleading. Incident after incident she recalled. She told of the long night, when Ootah went by moonlight into the mountains, how he had braved the hill spirits, how they struck him in the frigid highlands, and how the beneficent quilanialequisut ...
— The Eternal Maiden • T. Everett Harre

... ill-treated our courier, a youth of tender age, having attempted to stone him to death. Our courier is ready to swear that at the time of the attack the young men were busily engaged counting a vast store of ammunition, consisting of round white clay balls baked to the hardness of bullets, and ...
— Punch, or the London Charivari, Volume 1, Complete • Various

... first on Jerry's part, but on Borckman's part. Borckman felt the abysmal urgings of the beast, as a beast, to prove himself master of this four-legged beast. Jerry felt his jowl and jaw clutched still more harshly and hardly, and, with increase of harshness and hardness, he was flung farther down the deck, which, on account of its growing slant due to heavier gusts of wind, had become ...
— Jerry of the Islands • Jack London

... marry them; the blood thaws in the heart and flows out into the veins, like the rills of sparkling water that trickle from every lump of ice or snow, as though all the ice and snow on earth, and all the hardness of heart, all the heresy and schism, all the works of the devil, had yielded to the force of love and to the fresh warmth of innocent, lamb-like, confiding virtue. In such a world there should be no guile—but there is a great deal of it notwithstanding. Indeed, at no other season ...
— Democracy An American Novel • Henry Adams

... in wood, are used for finishing the crayon, especially the No. 0, its hardness adapting it ...
— Crayon Portraiture • Jerome A. Barhydt


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