Definition of double salt in US English:

double salt


  • A crystalline salt having the composition of a mixture of two simple salts but with a different crystal structure from either.

    • ‘Double salts commonly form large crystals more readily than do the single salts that make them up.’
    • ‘An exothermic dressing flux, usually containing nitrate salts and silicofluoride double salts, can be used to recover much of this entrapped zinc.’