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permanent hardness |
Also found in: Encyclopedia, Hutchinson | 0.07 sec. |
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permanent hardness n (Chemistry) Chem hardness of water that cannot be removed by boiling as it results mainly from the presence of calcium and magnesium chlorides and sulphates How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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