alum cochineal

noun

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

Word History

First Known Use

1846, in the meaning defined above

Time Traveler
The first known use of alum cochineal was in 1846

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Dictionary Entries Near alum cochineal

Cite this Entry

“Alum cochineal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alum%20cochineal. Accessed 29 Mar. 2024.

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