hardness

1. (countable, uncountable)The quality of being hard.

   Härte

   твёрдостьtvjórdostʹ

   the quality of being difficult to do

2. (countable, uncountable)An instance of this quality; hardship.

3. (countable, uncountable)The quantity of calcium carbonate dissolved in water, usually expressed in parts per million (ppm).

4. (countable, uncountable)The resistance to scratching, cutting, indentation or abrasion of a metal or other solid material.

5. (countable, uncountable)The penetrating ability of electromagnetic radiation, such as x-rays; generally, the shorter the wavelength, the harder and more penetrating the radiation.

6. (countable, uncountable)The measure of resistance to damage of a facility, equipment, installation, or telecommunications infrastructure when subjected to attack.

7. (countable)A measure of how hard a material is.

   The hardness of the material was high.

1. One of the qualities of steel is hardness.

   Одна з характеристик сталі - твердість. — aandrusiak

   ruОдной из характеристик стали является твёрдость. — Inego

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2. The hardness of diamond is such that it can cut glass.

   ruАлмаз настолько твёрд, что может резать стекло. — Olya

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3. The garnets are an unexpected habitat for microbes because of their hardness.

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4. The hardness of diamond is 10.

   ruТвёрдость алмаза равна 10. — Biga

   deDie Härte eines Diamanten ist 10. — Tamy

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5. Mineral hardness is measured on the Mohs scale.

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