-
Trending Now:
More Trending:
- scaramouch non sequitur admiral's mast calumny kakistocracy
- ALL
Naphthol AS
Definition of Naphthol AS
1 : a crystalline phenolic anilide HOC10H6CONHC6H5 used as a coupling component for azoic dyes; the anilide of 3-hydroxy-2-naphthoic acid
2 : any of a series of arylides of either ortho -hydroxy aromatic carboxylic acids (as 3-hydroxy-2-naphthoic acid) or acyl derivatives (as acetoacetic acid) of acetic acid used as coupling components for azoic dyes
From the M-W Editors
There's more!
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!
Origin and Etymology of naphthol as
German naphthol AS, from naphthol + AS, from anilid anilide + säure acid
Seen and Heard
What made you want to look up Naphthol AS? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!