water softener

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noun

any of a group of substances that when added to water containing calcium and magnesium ions cause the ions to precipitate or change their usual properties: used in the purification of water for the laboratory, and for giving water more efficient sudsing ability with soap.

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Also called softener.

Words nearby water softener

water ski, water slide, water snail, water snake, water-soak, water softener, water soldier, water-soluble, water spaniel, water spider, water splash

British Dictionary definitions for water softener

water softener

noun

any substance that lessens the hardness of water, usually by precipitating or absorbing calcium and magnesium ions

a tank, apparatus, or chemical plant that is used to filter or treat water to remove chemicals that cause hardness

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