色素しきそ Common Noun Noun English jmdict 1 noun (common) (futsuumeishi)nouns which may take the genitive case particle 'no' pigment;coloring;colouring;colorant;colourant
蛍光色素けいこうしきそ Noun English jmdict 1 noun (common) (futsuumeishi) fluorescent dye;fluorescent pigment;fluorochrome