1. the process by which a solid substance gradually dissolves and becomes liquid by absorbing moisture from the air
Usage: chemistry term; commonly observed in hygroscopic salts and compounds
2. the state or condition of becoming liquid through absorption of moisture
Usage: less common usage

Examples

• Calcium chloride undergoes deliquescence when exposed to humid air.
• The deliquescence of the salt crystals made them sticky and difficult to store.
• Scientists study deliquescence to understand how certain compounds interact with atmospheric moisture.
• Sodium hydroxide is prone to deliquescence and must be kept in sealed containers.
• The deliquescence process can be reversed by heating the liquid to evaporate the absorbed water.