Definition of temporary hardness in English:

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temporary hardness


[mass noun]
The presence in water of mineral salts (chiefly calcium bicarbonate) that are removed by boiling.
Example sentences
  • The temporary hardness is caused by the magnesium and calcium bound in hydrogen carbonate or carbonate.
  • There are two types of hardness, resulting from different compounds - permanent and temporary hardness.
  • Make sure you know how and why temporary hardness is removed.
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