alum cake

noun

Definition of alum cake

: a product of the action of sulfuric acid on clay consisting chiefly of silica and aluminum sulfate

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First Known Use of alum cake

1836, in the meaning defined above

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The first known use of alum cake was in 1836

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Cite this Entry

“Alum cake.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alum%20cake. Accessed 16 Feb. 2020.

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