Akademik

: any of a group of brilliant fluorescent yellow to pink to bluish red dyes characterized by the presence of the xanthene nucleus, known sometimes in colorless as well as colored forms, and used chiefly in dyeing textile fibers, in coloring paper, in producing fluorescent effects, and as organic pigments — see phthalein, rhodamine; compare triphenylmethane dye

any of a group of dyes having a molecular structure related to that of xanthene in which the aromatic (C₆H₄) groups are the chromophore.

[1925-30]