| 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. |
| calcium chloride n. A white deliquescent compound, CaCl2, used chiefly as a drying agent, refrigerant, and preservative and for controlling dust and ice on roads. |
| 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. |