methyl violet n.
Any of several basic dyes, such as gentian violet, that are derivatives of pararosaniline and are used as histological and bacteriological stains.
Now it is possible for the colour-maker to prepare a very fine green dye from this beautiful violet (methyl violet).
As specially suitable we must mention fuchsin, methyl green, methyl violet, methylene blue.
The action of acid is equally characteristic for methyl violet.
(d) It is violet; the dye is methyl violet, crystal violet, or one of their allies.
An aqueous or alcoholic solution of gentian violet or methyl violet is one of the best.
The bluer shade of methyl violet, introduced in 1868, and still manufactured, is a benzylated derivative.