a reddish material, CHO(OH), isolated from the madder root or produced synthetically: used as a dye, stain, etc.
Origin of purpurinfrom Classical Latin purpura, purple + -in
A reddish crystalline anthraquinone derivative, C14H8O5, that is isolated from madder root for use as a biological stain and commercial dye.
Origin of purpurinLatin purpura purple ; see purple . -in