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temporary hardness

noun
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Definition of temporary hardness

: the portion of the total hardness of water that is removable by boiling whereby the soluble bicarbonates of calcium and magnesium are converted into the corresponding insoluble carbonates and are precipitated —distinguished from permanent hardness

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“Temporary hardness.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/temporary%20hardness. Accessed 21 November 2019.

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