1. A white crystalline double sulphate of aluminium: the potassium double sulphate of aluminium
   - alum, potash alum

Derived forms: potassium alums

Type of: Al, aluminium [Brit, Cdn], aluminum [N. Amer], atomic number 13, double salt

Encyclopedia: Potassium alum

• morassy
• moratorium
• Moravia
• Moravian
• moray
• moray eel
• Moray Firth
• morbid
• morbidity
• morbidly
• morbidness
• morbific
• morbilli
• morbilliform
• morceau
• Morchella
• Morchella angusticeps
• Morchella conica
• Morchella crassipes
• Morchella esculenta
• Morchella semilibera
• Morchellaceae
• mordacious
• mordaciously
• mordacity