Last Updated:2025/11/20
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).
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hardness
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Source Word
hardness
IPA(Pronunciation)
Noun
countable
uncountable
Japanese Meaning
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)
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( plural )