azine dye
noun
variants:
or less commonly azine
plural -s
Definition of azine dye
: any of a class of acid quinonoid-type dyes containing a paradiazine ring fused to one or more aromatic rings and used especially in dyeing wool, silk, paper, and leather and in coloring fats, oils, lacquers, and plastics
also
: an oxazine or thiazine dye