potash alum
Americannoun
noun
Etymology
Origin of potash alum
First recorded in 1830–40
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Nitrat of potash, oxygenated muriat of potash, alum, sulphat of soda, &c. are examples of this circumstance, as, to make these salts cristallize, refrigeration must be added to evaporation.
From Elements of Chemistry, In a New Systematic Order, Containing all the Modern Discoveries by Antoine Lavoisier
Further, the hair-like alum of Dioscorides, repeated by Pliny below, was quite conceivably fibrous kalinite, native potash alum, which occurs commonly as an efflorescence.
From De Re Metallica, Translated from the First Latin Edition of 1556 by Georgius Agricola
Common alum is strictly potash alum; other two varieties are soda alum and ammonia alum, both similar in properties.
From The New Gresham Encyclopedia. Vol. 1 Part 1 A to Amide by Various
It is quite a matter of indifference to the photographer whether he uses potash alum or ammonia alum.
From Scientific American Supplement, No. 401, September 8, 1883 by Various
This was the common potash alum and uncombined with any carbonated alkali, and it passed into the stomach unchanged.
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
