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.
water iceRead more in this article about some frequently asked questions and fun facts related to our definitions.
water under the bridgeRead more in this article about some frequently asked questions and fun facts related to our definitions.
- water sign,
- water ski,
- water skiing,
- water snail,
- water snake,
- water soldier,
- water spaniel,
- water spider,
- water splash,
- water sports
Also called softener.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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