English Dictionary

hardness

IPA（発音記号）

/ˈhɑɹdnəs/

名詞

可算名詞 不可算名詞

The quality of being hard. / An instance of this quality; hardship. / (inorganic chemistry) The quantity of calcium carbonate dissolved in water, usually expressed in parts per million (ppm).

日本語の意味

硬さ：物体が硬い性質を示す状態 / 困難や苦労：この性質の具体例としての苦労、困難な状況 / 硬度（水）: 水中に溶解したカルシウム炭酸塩の量を示す（ppmで表現される）

The hardness of the steel made it ideal for cutting tools.

その鋼の硬さは切削工具に最適だった。

意味（1）

The quality of being hard.

Who can number the cloudes in wiſedom? or who can ſtay the bottles of heauen, / When the duſt groweeh into hardneſſe and the clods cleaue faſt together?

意味（2）

An instance of this quality; hardship.

意味（3）

(inorganic chemistry) The quantity of calcium carbonate dissolved in water, usually expressed in parts per million (ppm).

意味（4）

The resistance to scratching, cutting, indentation or abrasion of a metal or other solid material.

意味（5）

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

意味（6）

The measure of resistance to damage of a facility, equipment, installation, or telecommunications infrastructure when subjected to attack.

hardnesses （ plural ）