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temporary hardness

British

noun

chem hardness of water due to the presence of magnesium and calcium hydrogencarbonates, which can be precipitated as carbonates by boiling

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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To what is temporary hardness in water due?

From Human Foods and Their Nutritive Value by Snyder, Harry

We may briefly state that the chief object is to precipitate the bicarbonates of lime and magnesia held in solution by the water, and so get rid of what is known as the temporary hardness.

From Scientific American Supplement, No. 446, July 19, 1884 by Various

Most natural waters contain it dissolved in carbonic acid; this confers "temporary hardness" on the water.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" by Various

Such water is called water of temporary hardness.

From An Introduction to Chemical Science by Williams, Rufus Phillips

Similar scales should be arranged for the organic content and the temporary hardness of the water.

From The Home Medical Library, Volume V (of VI) by Winslow, Kenelm

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023