burnt alum

noun

Definition of burnt alum

: alum that has been dried at 200° C and powdered, being a caustic used to remove dead tissues

called also dried alum

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“Burnt alum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/burnt%20alum. Accessed 24 Jan. 2021.

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