Hardness of water due to presence of dissolved bicarbonates of calcium and magnesium which can be removed by boiling and hence the term 'temporary hardness.' Synonyms: (French.) durete temporaire; (German.) temporare Harte, Carbonatharte; (Greek.) parothiki sklipotis anthrakiki sklirotis; (Italian.) durezza temporanea; (Russian.) karbonatnaja zestkostj; (Spanish.) dureza temporal; (Turkish.) karbonat sertligi; (Yugoslavian.) turdooa, trdota.