double salt

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a solution of two simple salts that forms a single substance on crystallization
• Hypernyms:
salt, solid solution, primary solid solution
• Hyponyms:
alum, potassium alum, potash alum, ammonia alum, ammonium alum,
Rochelle salt, Rochelle salts, potassium sodium tartrate, Paris green