alum cochineal

noun

Definition of alum cochineal

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

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of alum cochineal

1846, in the meaning defined above

Learn More About alum cochineal

Time Traveler for alum cochineal

Time Traveler

The first known use of alum cochineal was in 1846

See more words from the same year

Dictionary Entries Near alum cochineal

alum carmine

alum cochineal

Alumel

See More Nearby Entries 

Statistics for alum cochineal

Cite this Entry

“Alum cochineal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alum%20cochineal. Accessed 5 Dec. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!