Advertisement

Advertisement

potash alum

[ pot-ash al-uhm ]

noun

, Chemistry.


potash alum

noun

  1. the full name for alum
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


Discover More

Word History and Origins

Origin of potash alum1

First recorded in 1830–40
Discover More

Example Sentences

It is quite a matter of indifference to the photographer whether he uses potash alum or ammonia alum.

The rule indicates, also, that aluminium chloride would be better than the sulphate or than potash alum.

Common alum is strictly potash alum; other two varieties are soda alum and ammonia alum, both similar in properties.

This was the common potash alum and uncombined with any carbonated alkali, and it passed into the stomach unchanged.

Advertisement

Advertisement

Advertisement

Advertisement


potashpotash feldspar