a white, lumpy, deliquescent solid, CaCl2, usually derived from calcium carbonate by reaction with hydrochloric acid, or as a by-product of various commercial processes: used chiefly as a drying agent and preservative and for preventing dust.
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Origin of calcium chloride
First recorded in 1880–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for calcium chloride
a white deliquescent salt occurring naturally in seawater and used in the de-icing of roads and as a drying agent. Formula: CaCl 2
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
Science definitions for calcium chloride
A white crystalline salt that attracts water very strongly. It is used in refrigeration and is spread on roads to melt ice and control dust. Chemical formula: CaCl2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.