alum cochineal

noun

Definition of alum cochineal

: a red fluid composed of alum, cochineal, and water used for staining biological specimens

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First Known Use of alum cochineal

1846, in the meaning defined above

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The first known use of alum cochineal was in 1846

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Cite this Entry

“Alum cochineal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alum%20cochineal. Accessed 27 Nov. 2020.

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