noun, often capitalized
Ni·​gro·​sine | \ ˈnīgrəˌsēn, -sə̇n \
variants: or nigrosine or less commonly Nigrosin \ -​sə̇n \ or nigrosin
plural -s

Definition of Nigrosine

: any of several azine dyes closely related to the indulines: such as
a or Nigrosine Base B : an oil-soluble bluish black dye obtained as the free base by heating aniline and aniline hydrochloride and nitrobenzene or nitrophenol in the presence of iron and used chiefly in coloring waxes, shoe polish, plastics, and lacquers and as wood stains
b or Nigrosine Spirit Soluble : a chloride of the free base that is soluble in alcohol and is used similarly
c or Nigrosine Water Soluble : a water-soluble sulfonation product of the free base or of its chloride used chiefly in dyeing leather and paper and as a biological stain

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!

History and Etymology for Nigrosine

Latin nigr-, niger black + English -ose + -ine or -in

Keep scrolling for more

Learn More About Nigrosine

Dictionary Entries Near Nigrosine




See More Nearby Entries 

Statistics for Nigrosine

Cite this Entry

“Nigrosine.” Dictionary, Merriam-Webster, Accessed 31 Jul. 2021.

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


Test Your Vocabulary

Dog Words Quiz

  • shiba puppy more or less demanding cuddles
  • Which of the following animals has a dog in its etymology?
Spell It

Can you spell these 10 commonly misspelled words?

 AlphaBear 2

Spell words. Make bears.

Love words? Need even more definitions?

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