alkali blue
noun
Definition of alkali blue
1 : any of various alkali-soluble triphenylmethane dyes that are essentially sodium salts of monosulfonic acids of phenylated pararosaniline and are used chiefly in making pigments
2 : any of the fairly permanent pigments made from an alkali blue dye and used chiefly in printing inks
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!
1864
First Known Use of alkali blue
1864
Seen and Heard
What made you want to look up alkali blue? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!