hardness

Etymology
From, , from , from +. Equivalent to.

Noun

 * 1) The quality of being hard.
 * 2) An instance of this quality; hardship.
 * 3)  The quantity of calcium carbonate dissolved in water, usually expressed in parts per million (ppm).
 * 4) The resistance to scratching, cutting, indentation or abrasion of a metal or other solid material.
 * 5)  The penetrating ability of electromagnetic radiation, such as x-rays; generally, the shorter the wavelength, the harder and more penetrating the radiation.
 * 6) The measure of resistance to damage of a facility, equipment, installation, or telecommunications infrastructure when subjected to attack.
 * 7)  A measure of how hard a material is
 * 1)  A measure of how hard a material is

Translations

 * Bulgarian: ,
 * Catalan:
 * Czech: tvrdost
 * Dutch:
 * French:
 * Friulian: durece
 * Galician: dureza
 * German:
 * Greek:
 * Ancient: σκληρότης
 * Hungarian:
 * Ido:
 * Italian:
 * Latin: dūritās
 * Latvian: cietība
 * Malayalam:
 * Norwegian:
 * Bokmål:
 * Occitan:
 * Portuguese:
 * Quechua: sinchi
 * Russian:
 * Sardinian: duresa
 * Spanish:
 * Swedish:
 * Tagalog: katigasan
 * Thai:
 * Turkish:
 * Walloon: