1. Melt or become liquid by absorbing moisture from the air
   "this type of salt deliquesces easily"
    
2. Melt away in the process of decay
   "The fungi eventually deliquesced"

Derived forms: deliquesced, deliquesces, deliquescing

Type of: decay, dissolve, melt, thaw, unfreeze, unthaw [N. Amer]