alizarine
/əˈlɪzəriːn/
noun
- A red dye originally made from the madder plant, now produced synthetically, used for coloring textiles and as a stain in biology.
- Traditional Persian rugs often contained alizarine for their deep red colors.
- Alizarine was one of the first natural dyes to be made artificially.
- The biologist used alizarine to stain the bone tissue for the microscope slide.