- A complex nitrogenous base, C20H21N3O, obtained by
oxidizing a mixture of aniline and toluidine, as a colorless
crystalline substance which forms red salts. These salts are essential
components of many of the socalled aniline dyes, as fuchsine, aniline
red, etc. By extension, any one of the series of substances derived
from, or related to, rosaniline proper.
Definition
[ n.]