noun
- Plural of nigrosine; a class of synthetic organic dyes that are typically dark blue or black in color, used in inks, paints, and textiles.
Usage: technical; chemistry
Examples
- Nigrosines are commonly used in the production of printing inks.
- The textile manufacturer selected nigrosines for their deep, permanent coloring properties.
- Nigrosines provide excellent lightfastness in industrial applications.
- These synthetic dyes, including nigrosines, have largely replaced older natural colorants.